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Millions warned over huge change to speed cameras

For years, drivers in New South Wales have relied on the point-to-point speed camera rule, which only captures the speed of heavy vehicles, but that rule is set to change as part of a new trial as the state attempts to lower their death toll. The point-to-point, also known as average speed cameras are set to be turned on for all vehicles in two regional locations during the trial. The first location will be 15-kilometre stretch on the Pacific highway between Kew and Lake Innes in Port Macquarie, and the second location will be on the Hume Highway between Coolac and Gundagai, with 16km between the two cameras. “NSW is the only jurisdiction in the world to use average speed cameras but restrict their use to heavy vehicles only,” Roads Minister John Graham said. “In the context of a rising road toll, now is the time to trial these cameras for light vehicles and understand if we can keep more people safe on the road more of the time.” He added that all other states in Australia, as well as the UK and Norway have found the average speed cameras to be effective. “All other mainland Australian states and countries like the UK, Norway, Italy and the Netherlands have found average speed cameras to be effective and we aim to be as rigorous as possible to be sure they will also reduce road trauma in NSW.” “Rather than test your speed at a particular point in time, like a mobile speed camera, these test the speed you’re driving over 15 or 16 kilometres,” he said. “That means it’s a truer reflection of how quickly people are driving.” He added that the trial is focused on regional NSW as it has suffered a disproportionate amount of road fatalities, with six road deaths and 33 serious injuries between 2018 and 2022. “Although only a third of people live in regional New South Wales, that’s where two thirds of the deaths from road crashes happen," he said. Speeding contributed to 44 per cent of NSW road fatalities last year, three-quarters of which were in the regional parts of the state. The trial will run for six months, and for those caught speeding, they will be given a 60-day warning letter period, before financial and licence penalties kick in. Images: news.com.au

Legal

Oasis issue urgent warning after scalpers list tickets for $42,000

Oasis have been forced to issue a warning to music fans who are searching for tickets to their highly-anticipated reunion tour, after resale tickets have been listed for thousands of dollars. Tickets to the UK and Irelands reunion show went on sale on Saturday, with tickets to the 17 shows selling out in a matter of hours. Tickets were originally posted on Ticketmaster with prices ranging from $190 AUD to $500 AUD, before prices were bumped up by the ticket merchant as being "in demand", with the cheapest tickets then priced at $475 AUD. Since all shows were officially sold out, some tickets have since been posted on resale sites such as StubHub and Viagogo, with prices ranging from $1,100 AUD to a whopping $42,000 AUD. After all the tickets were sold, ticket scalpers shared their tickets on the resale websites to turn a profit, with music fans sharing photos of the outrageous prices on social media. <blockquote class="twitter-tweet"> The highest price I've seen so far is £22,045. It's ridiculous. I know no one is likely to pay that, but why are these companies allowing it? <a href="https://t.co/uMSt0TS6K9">pic.twitter.com/uMSt0TS6K9</a> — Jordan (@grahamjordan_) <a href="https://twitter.com/grahamjordan_/status/1829647325901570230?ref_src=twsrc%5Etfw">August 30, 2024</a></blockquote> "And it’s begun," one fan wrote alongside a screenshot of the resale websites. "Viagogo and StubHub all trying to rip off Oasis fans, with the highest priced ticket being on StubHub for £6,347 ($12,323 AUD). Hang your heads in shame." The music fan then added another photo of the $42,000 AUD ticket for sale, writing, "The highest price I've seen so far is £22,045. It's ridiculous. I know no one is likely to pay that, but why are these companies allowing it?" Oasis themselves then stepped in to warn fans about paying the extortionate fees for tickets, saying according to the terms and conditions, tickets could only be resold at face value via Ticketmaster and Twickets. "Tickets sold in breach of terms and conditions will be cancelled by the promoters," they wrote in a post to X. Oasis promoters had previously issued a similar warning, telling fans tickets sold through "unauthorised resale platforms" would be in breach of terms and conditions and "may be cancelled". Image credits: Instagram/Vuk Valcic/ZUMA Press Wire/Shutterstock Editorial

Money & Banking

‘It’s time to give up on normal’: what winter’s weird weather means for the warm months ahead

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/david-bowman-4397">David Bowman</a>, <a href="https://theconversation.com/institutions/university-of-tasmania-888">University of Tasmania</a> Heavy winds struck south-east Australia over the weekend as a series of cold fronts moved across the continent. It followed a <a href="https://www.9news.com.au/national/australia-weather-update-nsw-and-victoria-damaging-winds-high-fire-danger-warnings/0f9b19d8-dc81-44c9-8df4-679cbb67c055">high fire danger</a> in Sydney and other parts of New South Wales last week, and <a href="https://www.abc.net.au/news/2024-08-28/fire-grass-emergency-warning-firefighter-horningsea-park/104281180">a fire in south-west Sydney</a> that threatened homes. The severe weather rounds out a weird winter across Australia. The nation’s <a href="https://www.theguardian.com/australia-news/article/2024/aug/26/winter-heat-records-broken-as-australia-set-for-more-temperatures-over-10c-above-average">hottest ever winter temperature was recorded</a> when Yampi Sound in Western Australia reached 41.6C on Tuesday. Elsewhere across Australia, winter temperatures have been <a href="https://www.theguardian.com/australia-news/article/2024/aug/28/nsw-weather-forecast-fire-danger-warnings-sydney-bom">way above average</a>. We can look to the positives: spring <a href="https://www.theguardian.com/australia-news/article/2024/aug/26/australias-early-spring-brings-budding-flowers-chirping-birds-and-climate-alarm">flowers are blooming early</a>, and people have donned t-shirts and <a href="https://www.smh.com.au/environment/climate-change/spring-comes-early-after-warm-winter-with-more-heat-on-the-way-20240828-p5k63i.html">hit the beach</a>. But there’s a frightening undercurrent to this weather. Earth’s climate has become dangerously <a href="https://science.nasa.gov/climate-change/extreme-weather/">unstable</a>, and it’s only a matter of time before we get the bad combination of hot and dry weather, strong winds and a spark. None of this should come as a surprise. The sooner we stop expecting Australia’s weather to be “normal”, the sooner we can prepare for life in a wild climate. <figure><iframe src="https://www.youtube.com/embed/003XSg5AZBk?wmode=transparent&start=0" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe></figure> <h2>The green is deceiving</h2> The landscape around Sydney – and in fact, across much of south-east Australia – is very green at the moment. That’s because we’ve had a couple of years of good rains which triggered an explosion of vegetation growth. The below NASA satellite image reveals the picture in stark detail. It’s certainly lush out there at the moment. But the problem with climate change is that weather conditions can turn on a dime. This August was a case in point. At month’s end, much of Australia was hit by a record-breaking heatwave and <a href="http://www.bom.gov.au/australia/charts/synoptic_col.shtml">damaging winds</a> – conditions that can dry out a green landscape with devastating efficiency, turning it into fuel for a bushfire. The dangerous fire weather that struck Sydney this week came as a surprise to many. But in reality, these abnormal conditions are the new normal. We must open our minds to this, if we want to be prepared. <h2>A climate off the rails</h2> The year 2023 was Earth’s <a href="https://www.climate.gov/news-features/featured-images/2023-was-warmest-year-modern-temperature-record#:%7E:text=The%20year%202023%20was%20the,decade%20(2014%E2%80%932023).">hottest on record</a>. And <a href="https://www.carbonbrief.org/state-of-the-climate-2024-now-very-likely-to-be-warmest-year-on-record/">2024 looks likely</a> to be hotter still. In Australia, the last 12 months have provided all the evidence we need that our climate is wobbling on its rails. In October 2023, Victoria’s Gippsland region suffered unseasonably early bushfires, then soon after battled <a href="https://www.abc.net.au/news/2023-12-05/gippsland-fires-and-multiple-floods-breeding-resilience/103179368">heavy rain and flooding</a>. And Tasmania, where I live, <a href="https://www.abc.net.au/news/2024-03-07/tas-drought-conditions-as-dry-tasmania-looking-very-brown/103546058">has been gripped by drought</a>. This February was Hobart’s third driest in 143 years. But over the weekend we were hammered by a <a href="https://www.abc.net.au/news/2024-09-01/tas-flood-warnings-severe-weather-sunday/104296092">deluge of rain and wind</a>. This climate instability is setting up bad fire conditions. Not everywhere in south-east Australia will be hit by fire, but it will happen somewhere. It could be the hinterlands or the coast. It will depend on how our erratic climate behaves in the coming months. Let’s stick with the Tasmania example. Sure, the surface soils are now nicely saturated. But that will lead to a burst of grass and other vegetation in spring. If the dry weather returns and the temperatures heat up in summer, the fine fuels will dry out and become dangerously combustible. All we need then is a windy day and a spark, and a nightmare fire will soon be racing across the landscape. <h2>Canada on fire</h2> Of course, Australia is not the only country facing climate instability and a worsening fire risk. Canada suffered a catastrophic wildfire season in 2023 – one of the most severe on record. It burnt almost 15 million hectares and forced the evacuation of 232,000 people. Smoke produced by the fires affected communities up to 1,000 km away, such as in southern Canada and on the east coast of the United States. A <a href="https://www.nature.com/articles/d41586-024-02653-6">recent paper</a> in the journal Nature Communications outlined why. It pinpointed early snowmelt, early-season drought conditions and intense heat. In fact, the average temperature in Canada from May to October last year was 2.2°C higher than the 30-year average. The researchers said human-caused climate change exacerbated the fire’s effects. It went on: <blockquote> The disproportionate effect a few days of extreme weather can have on the total area burned is also evident in this fire season, leading to worrisome prospects given projected future conditions. </blockquote> <h2>Normal no longer exists</h2> It’s always been difficult to forecast fire seasons in Australia, due to our natural climate variability. But now we are seeing climate instability <a href="https://www.csiro.au/en/research/environmental-impacts/climate-change/state-of-the-climate/previous/state-of-the-climate-2018/australias-changing-climate">layering over itself</a>: background dryness, wet seasons bringing a proliferation of fuels, and above-average temperatures. Eventually we’ll get unlucky and experience extremely strong winds thrown into the mix. That’s when catastrophic fires are most likely to occur. As we saw in the <a href="https://theconversation.com/australias-black-summer-of-fire-was-not-normal-and-we-can-prove-it-172506">Black Summer of 2019–20</a>, and again in Canada last year, some fires are so intense they completely overwhelm fire suppression strategies. Under climate change, the likelihood of getting a bad combination of weather conditions is increasing. So what’s the remedy? Australia really must start making our communities more resilient. Serious and sustained adaptation is needed. As my <a href="https://www.science.org/doi/full/10.1126/science.adi8066">research has outlined</a>, this requires the careful integration of: <ul> <li>community education programs</li> <li>research and development to design fire-safe homes, gardens, communities and bushland</li> <li>incentives and penalties to ensure adaptation measures are implemented.</li> </ul> As this winter has shown, Australia’s climate is entering a different phase. It’s time to give up on “normal” weather. The game is changing and we have to adapt.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/237857/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/david-bowman-4397">David Bowman</a>, Professor of Pyrogeography and Fire Science, <a href="https://theconversation.com/institutions/university-of-tasmania-888">University of Tasmania</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/its-time-to-give-up-on-normal-what-winters-weird-weather-means-for-the-warm-months-ahead-237857">original article</a>. </div>

Travel Trouble

Aussie travellers warned over bird flu outbreak

Australian travellers have been warned to be cautious after concerns about the sudden outbreak of bird flu. Strains of Avian Influenza, known as the bird flu, are circulating across the globe, with <a href="https://www.smartraveller.gov.au" target="_blank" rel="noopener">Smart Traveller</a> warning of outbreaks in Europe, North and South America and Asia. “Human infection is rare. But be aware of increased health risks when travelling to impacted countries,” the alert states. The virus typically affects birds but can be transferred to other animals before being passed on to humans. “Eggs and poultry meat are safe to eat if handled and cooked using safe food handling practices,” the alert states. Travellers have been urged to look out for signs of infection, including eye redness or irritation (conjunctivitis), fever, cough, sore throat, runny or blocked nose, muscle or body aches, fatigue, shortness of breath or difficult breathing, and pneumonia. Travellers have also been urged to minimise contact with animals in areas affected by the bird flu, avoid contact with dead or sick animals (including wild birds), and avoid poultry farms and live bird “wet” markets. While there is no specialised vaccine for bird flu, travellers have been urged to check that their other influenza vaccines are up to date before travelling. Smart Traveller states, “If you feel unwell while travelling back to Australia, tell a crew member or airport staff. Make sure to tell them about any contact with sick people or animals.” Image credits: Shutterstock

International Travel

Kyle Sandilands' warning about new "right to disconnect" laws

Kyle Sandilands has warned Aussies against "abusing the system" put in place by new 'right to disconnect' laws. As of August 26th, employees of large companies can legally refuse to respond to "unreasonable" after-hours calls from their employer. Discussing the new laws on KIIS FM on Monday morning, Sandilands warned workers about celebrating the laws too soon, as they could come with a catch depending on the leniency of employers. "It doesn't mean they won't railroad you out behind the scenes," the radio host said. Kyle then argued that while it would be illegal under the new legislation for bosses to punish workers for not responding after hours, some devious managers could find ways around the laws. "Don't think for a second: 'Screw that real estate agent boss'," Kyle said. "Because eventually they will find a way to get rid of you to work around the boundaries." Sandilands then urged Aussies not to "abuse the system", saying, "Everyone you can say, 'oh by law, I don't have to respond to that' and they will then go, 'no worries'." "And then they get you for every little tiny infringement. You will go if they want you to go, one way or another. So, don't abuse the system." Jackie O then chimed in on the debate, saying the laws were a direct response to a modern working problem. "I feel like that might happen," Jackie said. "I think it's sometimes because the thing is that work hours now are infinity. When you didn't have email and mobile phones, you never got bothered outside of work hours." Kyle replied, "And nothing got done. It was the late 1970s. The world spun very slowly back then." Image credits: KIIS FM

Legal

40°C in August? A climate expert explains why Australia is ridiculously hot right now

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/andrew-king-103126">Andrew King</a>, <a href="https://theconversation.com/institutions/the-university-of-melbourne-722">The University of Melbourne</a> It’s winter in Australia, but as you’ve probably noticed, the weather is unusually warm. The top temperatures over large parts of the country this weekend were well above average for this time of year. The outback town of Oodnadatta in South Australia recorded 38.5°C on Friday and 39.4°C on Saturday – about 16°C above average. Both days were well above the state’s previous winter temperature record. In large parts of Australia, the heat is expected to persist into the coming week. A high pressure system is bringing this unusual heat – and it’s hanging around. So temperature records have already fallen and may continue to be broken for some towns in the next few days. It’s no secret the world is warming. In fact, 2024 is shaping up to be <a href="https://www.carbonbrief.org/state-of-the-climate-2024-now-very-likely-to-be-warmest-year-on-record/">the hottest year on record</a>. Climate change is upon us. Historical averages are becoming just that: a thing of the past. That’s why this winter heat is concerning. The warming trend will continue for at least as long as we keep burning fossil fuels and polluting the atmosphere. Remember, this is only August. The heatwaves of spring and summer are only going to be hotter. <figure><iframe src="https://www.youtube.com/embed/GmhMKjxEGQo?wmode=transparent&start=0" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe><figcaption>Widespread heat forecast for Australia in August, 2024 (Bureau of Meteorology)</figcaption></figure> <h2>Records broken across Australia</h2> The Bureau of Meteorology was expecting many records to be broken over the weekend across several states. On Thursday, bureau meteorologist Angus Hines described: <blockquote> A scorching end to winter, with widespread heat around the country in coming days, including the chance of winter records across multiple states for maximum temperature. </blockquote> The amount of heat plunging into central Australia was particularly unusual, Hines said. On Friday, temperatures across northern South Australia and southern parts of the Northern Territory were as much as 15°C above average. Temperatures continued to soar across northern parts of Western Australia over the weekend, with over 40°C recorded at Fitzroy Crossing on Sunday. It has been 2–12°C above average from Townsville all the way down to Melbourne for several days in a row. <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/615457/original/file-20240825-18-d8f6ho.gif?ixlib=rb-4.1.0&q=45&auto=format&w=1000&fit=clip"><img src="https://images.theconversation.com/files/615457/original/file-20240825-18-d8f6ho.gif?ixlib=rb-4.1.0&q=45&auto=format&w=754&fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/615457/original/file-20240825-18-d8f6ho.gif?ixlib=rb-4.1.0&q=45&auto=format&w=600&h=412&fit=crop&dpr=1 600w, https://images.theconversation.com/files/615457/original/file-20240825-18-d8f6ho.gif?ixlib=rb-4.1.0&q=30&auto=format&w=600&h=412&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/615457/original/file-20240825-18-d8f6ho.gif?ixlib=rb-4.1.0&q=15&auto=format&w=600&h=412&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/615457/original/file-20240825-18-d8f6ho.gif?ixlib=rb-4.1.0&q=45&auto=format&w=754&h=518&fit=crop&dpr=1 754w, https://images.theconversation.com/files/615457/original/file-20240825-18-d8f6ho.gif?ixlib=rb-4.1.0&q=30&auto=format&w=754&h=518&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/615457/original/file-20240825-18-d8f6ho.gif?ixlib=rb-4.1.0&q=15&auto=format&w=754&h=518&fit=crop&dpr=3 2262w" alt="Animated maximum temperature anomaly map showing heat building across central Australia" /></a><figcaption>Maximum temperature anomalies from August 19-24, showing heat building across Australia. Bureau of Meteorology, <a class="license" href="http://creativecommons.org/licenses/by/4.0/">CC BY</a></figcaption></figure> Bear in mind, it’s only August. As Hines said, the fire weather season hasn’t yet hit most of Australia – but the current conditions – hot, dry and sometimes windy – are bringing moderate to high fire danger across Australia. It may also bring dusty conditions to central Australia. And for latitudes north of Sydney and Perth, most of the coming week will be warm. <h2>What’s causing the winter warmth?</h2> <a href="http://www.bom.gov.au/australia/charts/synoptic_col.shtml">In recent days</a> a stubborn high pressure system has sat over eastern Australia and the Tasman Sea. It has kept skies clear over much of the continent and brought northerly winds over many areas, transporting warm air to the south. High pressure promotes warm weather – both through clearer skies that bring more sunshine, and by promoting the descent of air which <a href="https://media.bom.gov.au/social/blog/2544/explainer-what-influences-air-temperature/">causes heating</a>. By late August, both the intensity of the sun and the length of the day has increased. So the centre of Australia can really warm up when under the right conditions. High pressure in June can be associated with cooler conditions, because more heat is lost from the surface during those long winter nights. But that’s already less of an issue by late August. This kind of weather setup has occurred in the past. Late-winter or early-spring heat does sometimes occur in Australia. However, this warm spell is exceptional, as highlighted by the broken temperature records across the country. <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/615284/original/file-20240823-20-1mu7h0.png?ixlib=rb-4.1.0&q=45&auto=format&w=1000&fit=clip"><img src="https://images.theconversation.com/files/615284/original/file-20240823-20-1mu7h0.png?ixlib=rb-4.1.0&q=45&auto=format&w=754&fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/615284/original/file-20240823-20-1mu7h0.png?ixlib=rb-4.1.0&q=45&auto=format&w=600&h=450&fit=crop&dpr=1 600w, https://images.theconversation.com/files/615284/original/file-20240823-20-1mu7h0.png?ixlib=rb-4.1.0&q=30&auto=format&w=600&h=450&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/615284/original/file-20240823-20-1mu7h0.png?ixlib=rb-4.1.0&q=15&auto=format&w=600&h=450&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/615284/original/file-20240823-20-1mu7h0.png?ixlib=rb-4.1.0&q=45&auto=format&w=754&h=566&fit=crop&dpr=1 754w, https://images.theconversation.com/files/615284/original/file-20240823-20-1mu7h0.png?ixlib=rb-4.1.0&q=30&auto=format&w=754&h=566&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/615284/original/file-20240823-20-1mu7h0.png?ixlib=rb-4.1.0&q=15&auto=format&w=754&h=566&fit=crop&dpr=3 2262w" alt="Graph of August Australian-average temperatures increasing since 1910" /></a><figcaption>August temperatures have been rising over the past century. Bureau of Meteorology</figcaption></figure> <h2>Feeling the heat</h2> The consequences of humanity’s continued greenhouse gas emissions are clear. Australia’s winters are getting warmer overall. And winter “heatwaves” are becoming warmer. Australia’s three warmest Augusts on record have all occurred since 2000 – and <a href="https://theconversation.com/why-is-australia-having-such-a-warm-winter-a-climate-expert-explains-210693">last August was the second-warmest since 1910</a>. When the right weather conditions occur for winter warmth across Australia, the temperatures are higher than a century ago. The warmth we are experiencing now comes off the back of <a href="https://theconversation.com/earth-has-just-ended-a-13-month-streak-of-record-heat-heres-what-to-expect-next-236655">a recent run of global temperature records</a> and <a href="https://theconversation.com/extreme-heat-is-breaking-global-records-why-this-isnt-just-summer-and-what-climate-change-has-to-do-with-it-234249">extreme heat events across the Northern Hemisphere</a>. This warm spell is set to continue, with temperatures above 30°C forecast from Wednesday through to Sunday in Brisbane. The outlook for spring points to continued <a href="http://www.bom.gov.au/climate/outlooks/#/temperature/maximum/median/seasonal/0">above-normal temperatures</a> across the continent, but as always we will likely see both warm and cold spells at times. Such winter warmth is exceptional and already breaking records. Climate change is already increasing the frequency and intensity of this kind of winter heat – and future warm spells will be hotter still, if humanity’s greenhouse gas emissions continue.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/237398/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/andrew-king-103126">Andrew King</a>, Senior Lecturer in Climate Science, <a href="https://theconversation.com/institutions/the-university-of-melbourne-722">The University of Melbourne</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/40-c-in-august-a-climate-expert-explains-why-australia-is-ridiculously-hot-right-now-237398">original article</a>. </div>

Domestic Travel

Lawyer warns drivers over little-known road rule with $2200 penalty

While some say it's just "the Aussie way", one lawyer has warned against this common act that could cost you up to $2200. Speaking to 7NEWS Astor Legal principal lawyer Avinash Singh, said that there has been a spike in motorists caught flashing their high beams on the road, to alert other drivers of police. “I’ve received an increased number of inquiries from people who have been caught flashing their high beams, warning oncoming drivers of police,” he said. “Most of my clients have been caught doing this by a mobile speed camera or an RBT, which they don’t realise can catch them out on this offence.” Drivers caught in the act could get an on-the-spot fine of $112 and one demerit point, and a maximum penalty of $2200. According to the Australian Road Rules, it is considered an unlawful use of headlights on high-beam. “It is an offence to drive on a road with high-beam headlights on if there is another vehicle in front, travelling in the same direction within 200m; or if there is another oncoming vehicle within 200m,” Singh said. “Similarly, road rules state that a driver must not use any light fitted to their vehicle to dazzle, or in a way that is likely to dazzle, another road user.” “It is arguable that flashing your headlights to warn of police would fall into the definition of ‘hindering police’ in the execution of their duty “ Motorists on Reddit have described headlight flashing as representing “a camaraderie between motorists” and one even called it “the Aussie way”. But others have argued that the act could impact the safety of other drivers. “Traffic laws are meant to act as a deterrent for dangerous driving, flashing a fellow motorist has the same effect the ticket is meant to but with more immediate results. It should be widely encouraged,” one commenter wrote. “I feel it only changes the driver’s behaviour for a few seconds, but removes the deterrent of getting a fine. So it probably makes traffic, in general, more dangerous,” another said. Image: Shutterstock

Legal

Warning over new scam preying on seniors

Police have issued an urgent warning for seniors to stay vigilant as a new scam targets more vulnerable Australians. Wollongong police officers have received reports of wills and estate documents allegedly being forged earlier this year, with inquiries ongoing. Scammers are currently targeting vulnerable members in the Illawarra community in Sydney, with elderly members of the community and their families being urged to take precautions to lower the risk of the new scam. "Examples of estate fraud include: a person signing a will that was a different document then they intended to sign, a person signing a will when they limited mental capacity, and an executor could pay themselves advances or unreasonable expenses from the estate,” a statement from a NSW Police spokesperson explained. Will fraud occurs when misleading or deceptive conduct is used while preparing a will. Executor fraud occurs when a person appointed to administer an estate uses deceitful tactics to gain access to estate assets, including false, fabricated or misleading statements used for the financial benefit. Anyone who has been affected or anyone with information have been urged to come forward to police. Image: Shutterstock

Legal

Avoid missing prostate warning signs with this handy quiz

A leading Australian Urologist is sounding a warning to men who unknowingly ignore symptoms of an enlarged prostate, wrongly assuming it’s just a part of growing older. Symptoms the Urologist highlighted include, increased frequency going to the toilet at night or a change in urine flow. Dr Gordon O’Neill, who has been treating diseases of the prostate for over 25 years said almost half of all men over 50 have an enlarged prostate, or benign prostatic hypertrophy (BPH), where the prostate gland enlarges and obstructs the urethra - the tube which expels urine from the bladder, and this may cause bothersome urinary symptoms. “While BPH is not cancerous or life threatening, the symptoms such as leaking or frequent urination can negatively impact a man’s quality of life,” Dr O’Neill said. “The prostate starts to compress the urine channel and this in turn may interfere with bladder function. In some severe cases, some men have trouble urinating at all. “If left undiagnosed this condition could lead to bladder damage, urinary tract infections and bleeding,” he said. Dr O’Neill is encouraging men to complete <a title="https://www.getmosh.com.au/start/prostate-enlargement-health-check" href="https://www.getmosh.com.au/start/prostate-enlargement-health-check" data-outlook-id="dea5c553-2489-4009-ae90-d09c24226c83">Mosh’s BPH quiz</a> which can help flag any irregularities that might cause need for concern. Mosh Medical Director Joanna Sharp said the quiz makes it easy for men to raise an issue they often deem embarrassing to discuss. “It’s a simple survey that can be done anywhere, at any time, allowing men who may be worried about their prostate function to find out whether medical intervention is needed,” said Dr Sharp. “There’s a lot of unnecessary fear and old school thinking among men when it comes to the prostate and there’s no need. Women are very good at being more in tune with their bodies, men are not so great. We need men to do better to notice changes in their body, especially ones that could be hiding something more sinister.” “Are they having to get up to urinate more frequently at night and is that impacting their quality of sleep? Does it dribble at the end? We don’t want men suffering in silence, thinking it’s secret men’s business. Troublesome symptoms of enlarged prostate can be fixed very easily,” Dr Sharp said. About one in seven men aged 40 to 49 years are diagnosed with a prostate problem, which increases to about one in every four men aged 70 years and older. GPs then assess the survey results referring those that need further examination to a urologist, like Dr O’Neill. “Some men live with an enlarged prostate and have no idea and that’s okay. But for those men where the symptoms have become an issue there are minimally invasive options such as an implant procedure,” Dr O’Neill said. “It’s a minimally invasive treatment that opens the prostatic urethra, relieving obstruction for men who suffer urinary symptoms related to BPH." “The implant holds the enlarged prostate tissue out of the way so it no longer blocks the urethra. There is no cutting, heating or removal of prostate tissue with no impact on sexual function which can be a big fear and deterrent for some men,” he said. Dr O’Neill believes men should also be screened for prostate cancer by getting a PSA test from the age of 40. As they age the prostate gland grows and the PSA is likely to rise slightly. “The prostate grows on average about four percent a year, so changes can start as early as 30 but they won’t become apparent for another 20 years,” he said. “While having BPH or an enlarged prostate doesn’t increase your risk of prostate cancer, symptoms left unchecked could be masking a much more sinister problem such as prostate cancer so it’s better to have your symptoms assessed,” Dr O’Neill said. You can find Mosh's BPH quiz <a href="https://www.getmosh.com.au/start/prostate-enlargement-health-check" target="_blank" rel="noopener">here</a>. Image credits: Shutterstock

Body

Antarctic heat, wild Australian winter: what’s happening to the weather and what it means for the rest of the year

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/martin-jucker-379172">Martin Jucker</a>, <a href="https://theconversation.com/institutions/unsw-sydney-1414">UNSW Sydney</a> Australia’s south and east have seen <a href="https://theconversation.com/southern-australia-is-freezing-how-can-it-be-so-cold-in-a-warming-climate-233977">freezing temperatures</a> and <a href="https://www.theguardian.com/australia-news/article/2024/jul/29/australia-winter-weather-forecast-east-coast-colder-records">wild weather</a> this winter. At the same time, the continent as a whole – and the globe – have <a href="https://www.abc.net.au/news/2024-08-03/australia-suffers-cold-winter-weather-despite-mild-forecast/104176284">continued to warm</a>. What’s going on? As ever, it’s hard to pinpoint a single cause for weather events. But a key player is likely an event unfolding high above Antarctica, which itself may have been triggered by a heatwave at surface level on the frozen continent. Here’s what’s happening – and what it might mean for the rest of this year’s weather. <h2>When the stratosphere heats up</h2> Out story begins in the cold air over Antarctica. July temperatures in the stratosphere, the layer of air stretching between altitudes of around 10 and 50 kilometres, are typically around –80°C. The winds are also very strong, averaging about 300 kilometres per hour in winter. These cold, fast winds loop around above the pole in what is called the <a href="https://sites.krieger.jhu.edu/waugh/research/polarvortex">stratospheric polar vortex</a>. Occasionally, persistent high air pressure in the lower atmosphere can influence large-scale waves that extend around the globe and up into the stratosphere. There they cause the strong winds to slow down, and the air high above the pole to become much warmer than normal. In extreme situations the stratospheric winds can completely break down, in what is called a “sudden stratospheric warming” event. These events occur every few years in the northern hemisphere, but only one has ever been observed in the south, in 2002 (though another <a href="https://theconversation.com/the-air-above-antarctica-is-suddenly-getting-warmer-heres-what-it-means-for-australia-123080">almost happened in 2019</a>). <h2>Pushing polar weather our way</h2> Once the polar vortex is disturbed, it can in turn influence the weather at the surface by steering weather systems from the Southern Ocean towards the Equator. However, this is a slow process. The impact at the surface may not be felt until <a href="https://doi.org/10.1175/JCLI-D-22-0425.1">a few weeks or even months</a> after the initial weakening of the stratospheric polar vortex. Once it begins, the stratospheric influence can prevail for more weeks or months, and helps meteorologists make <a href="https://doi.org/10.5194/acp-22-2601-2022">long-range weather forecasts</a>. In climate science terms, the weak stratospheric winds put an atmospheric system called the <a href="http://www.bom.gov.au/climate/sam/">Southern Annular Mode</a> into a negative phase. The main effect of this on surface weather is to bring westerly winds further north. In winter, this means polar air outbreaks can reach places like Sydney more easily. As a result, we see more <a href="https://doi.org/10.1175/JCLI4134.1">rain over much of southern Australia</a>, and snowfall in alpine regions. In spring and summer it means westerly winds blow over the continent before reaching the east coast, bringing warm and dry air to southeastern Australia. The exact impact of a weaker polar vortex depends on how much and for how long the weather systems are being pushed further northward. It will also depend on other weather influencers such as El Niño and the Indian Ocean Dipole. <h1>This winter’s weirdness</h1> Unpicking exactly why any weather event occurs is tricky at the moment, because global weather has been absolutely crazy over the past 12 months or so. Global temperatures are <a href="https://theconversation.com/we-just-blew-past-1-5-degrees-game-over-on-climate-not-yet-213364">much higher than usual</a>, which is making unusual weather very common. But there are indications that the stratosphere is having some influence on our weather this winter. The stratospheric polar vortex started to warm in mid-July, and is about 20°C warmer than the long-term average. At the time of writing, the winds slowed down to about 230 kilometres per hour, 70 kilometres per hour slower than average. These numbers mean that, technically, the event does not qualify as a sudden stratospheric warming. However, further warming may still occur. If we look at how southern hemisphere winds have evolved in the past few weeks, we see a pattern which looks like what we would expect from a sudden stratospheric warming. First, we see warming in the stratosphere which is <a href="https://doi.org/10.1029/2021GL095270">at first accompanied by a poleward shift of weather systems</a>. The stratosphere’s influence then propagates downward and seems to <a href="https://doi.org/10.1175/JCLI-D-22-0425.1">induce many weeks</a> of weather systems shifted towards the equator. This coincides with the period of cold and rainy weather along Australia’s east coast in late July and the beginning of August. Forecasts suggest the Southern Annular Mode will be a long way from normal conditions in the first half of August – four standard deviations below average, which is extremely rare. <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/611211/original/file-20240804-19-sp862a.png?ixlib=rb-4.1.0&q=45&auto=format&w=1000&fit=clip"><img src="https://images.theconversation.com/files/611211/original/file-20240804-19-sp862a.png?ixlib=rb-4.1.0&q=45&auto=format&w=754&fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/611211/original/file-20240804-19-sp862a.png?ixlib=rb-4.1.0&q=45&auto=format&w=600&h=300&fit=crop&dpr=1 600w, https://images.theconversation.com/files/611211/original/file-20240804-19-sp862a.png?ixlib=rb-4.1.0&q=30&auto=format&w=600&h=300&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/611211/original/file-20240804-19-sp862a.png?ixlib=rb-4.1.0&q=15&auto=format&w=600&h=300&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/611211/original/file-20240804-19-sp862a.png?ixlib=rb-4.1.0&q=45&auto=format&w=754&h=377&fit=crop&dpr=1 754w, https://images.theconversation.com/files/611211/original/file-20240804-19-sp862a.png?ixlib=rb-4.1.0&q=30&auto=format&w=754&h=377&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/611211/original/file-20240804-19-sp862a.png?ixlib=rb-4.1.0&q=15&auto=format&w=754&h=377&fit=crop&dpr=3 2262w" alt="Diagram showing atmospheric warming and winds" /></a><figcaption>How initial warming high in the stratosphere ends up changing winds near the surface and pushing polar weather further north. <a class="source" href="https://stratobserve.com">Z.D. Lawrence / StratObserve / Annotated by Martin Jucker</a></figcaption></figure> <h1>A surface disturbance</h1> The main reason for the polar vortex to slow down is disturbances from the surface. Weather over the Amundsen Sea near Antarctica in the South Pacific is <a href="https://doi.org/10.1175/JCLI-D-22-0425.1">an important source</a> of these disturbances. This year, we have seen disturbances of this sort. There have been <a href="https://www.theguardian.com/world/article/2024/aug/01/antarctic-temperatures-rise-10c-above-average-in-near-record-heatwave">near-record surface temperatures around Antarctica</a>. These disturbances may be due to the globally high ocean temperatures, or even lingering effects of the <a href="https://doi.org/10.1175/JCLI-D-23-0437.1">eruption of the Hunga Tonga volcano in 2022</a>. But more research will be required to confirm the causes. <h1>What should we expect for the rest of the year?</h1> There are two pathways until the end of the year. One is that the stratospheric winds and temperatures recover to their usual values and no longer influence surface weather. This is what the forecasts from <a href="https://ozonewatch.gsfc.nasa.gov">Ozone Watch</a> seem to suggest. Another is that the stratosphere keeps warming and the winds keep being slower all the way into summer. In this scenario, we would expect a persistent negative Southern Annular Mode, which would mean a spring and potentially even summer with warmer and drier than usual weather over southeastern Australia, and a small ozone hole. The seasonal forecasting models from the European Centre for Medium Range Weather Forecasts <a href="https://x.com/drahbutler/status/1819142206348759170?s=46&t=sayfGwpo3_s310BwYpcdcQ">seem to favour this second scenario</a>. <a href="https://theconversation.com/profiles/martin-jucker-379172">Martin Jucker</a>, Senior Lecturer in Atmospheric Science, <a href="https://theconversation.com/institutions/unsw-sydney-1414">UNSW Sydney</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/antarctic-heat-wild-australian-winter-whats-happening-to-the-weather-and-what-it-means-for-the-rest-of-the-year-236067">original article</a>. </div>

Travel Trouble

Is Australia’s climate confusing you? Here’s why rainfall and temperatures don’t always behave as expected

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/carly-tozer-1404662">Carly Tozer</a>, <a href="https://theconversation.com/institutions/csiro-1035">CSIRO</a> and <a href="https://theconversation.com/profiles/james-risbey-2011">James Risbey</a>, <a href="https://theconversation.com/institutions/csiro-1035">CSIRO</a> In the past few years in Australia, seasonal rainfall and temperatures have left a lot of people confused. Sometimes, the hot, dry conditions usually associated with an El Niño have not eventuated. Similarly, there have been years where a La Niña did not lead to the cool, wet conditions expected. It’s important for scientists to better understand all weather processes at play, so we can manage expectations around what Australia might experience when climate drivers such as El Niño and La Niña are forecast in future. That’s where our <a href="https://journals.ametsoc.org/view/journals/mwre/aop/MWR-D-23-0112.1/MWR-D-23-0112.1.xml">new research</a> comes in. We examined the state of play in November 2020 and November 2021. La Niña conditions occurred in both years. November 2021 followed the La Niña script and was wet and cool, but November 2020 departed from expectations and was dry and warm. We set out to determine why. We found the differences could be explained by fluctuations in the path of storms over the Australian continent. These fluctuations can be hard to predict well in advance, which makes it difficult to say for certain how a particular La Niña or El Niño event will affect Australia. <h2>A tale of two Novembers</h2> For large parts of Australia, the presence of a La Niña or El Niño <a href="https://theconversation.com/what-to-expect-when-youre-expecting-an-el-nino-the-answer-might-surprise-you-198510">shifts the odds</a> of experiencing wet or dry conditions. Our analysis of Novembers 2020 and 2021 shows how actual outcomes can differ from, or align with, expectations. The first step in our analysis was to examine <a href="https://theconversation.com/what-does-el-nino-do-to-the-weather-in-your-state-218257">other climate drivers</a>, including the Indian Ocean Dipole and Southern Annular Mode. We wanted to know if these drivers were in the same phase – negative, neutral or positive – during those two Novembers a year apart. So what did we find? In addition to La Nina, both Novembers occurred during positive Southern Annular Mode phases and very weak negative Indian Ocean Dipole phases. These phases are typically associated with more rainfall in Australia. So this didn’t explain why November 2020 was hot and dry. Next, we looked to the <a href="http://www.bom.gov.au/climate/about/?bookmark=mjo">Madden Julian Oscillation</a>. When this driver is located in the Australian region, it has been linked to more rainfall in Australia. Although the oscillation was in different phases during November 2020 and 2021, we found in general, this driver does not strongly influence rainfall across all of Australia in November. It was time to look for answers elsewhere. <h2>Jet streams: a key piece in the puzzle</h2> Next, we examined weather systems – in other words, the movement of high and low pressure systems across the globe. These systems are partly controlled by jet streams, which are bands of wind in the upper atmosphere. The effect of jet streams on weather systems, including storms, means they influence rainfall in the regions they pass over. We found there was a strong jet stream over Australia in November 2021. This would have assisted the development of any rain-bearing low-pressure systems moving in from the west, allowing these systems to travel across the Australian continent. These systems brought rain and contributed to the very wet conditions. In November 2020, the jet stream was largely absent over Australia. Instead, it was pushed south of the continent, which means rainfall systems received little help and were also largely steered south. That contributed to the dry month. But why did the jet streams develop in the first place? They form in part due to temperature differences, and are found in the zones where the temperature contrast between warm and cool air is strongest. In November 2021, Australia experienced cooler temperatures over land, but above-average sea surface temperatures in the waters off northern Australia. This pattern set up the zone of strongest temperature contrasts over the continent, which led to a persistent jet stream there. In November 2020, Australia was relatively warm both over land and on the sea surface to the north. This meant that the strongest temperature contrasts (and the jet stream) now sat at the junction between the warm continent and cooler Southern Ocean. <h2>But wait, there’s more</h2> So why were temperatures over Australia so different? To help answer this question we shifted our analysis from the monthly timescale to the daily timescale. That’s because atmospheric features such as jet streams vary strongly from day to day. We found for about the first three weeks of November 2021, a large low-pressure system – also known as a trough – was sitting south of Australia. It pumped cold air onto the continent, cooling it down. This maximised the north-south temperature difference between the warm sea surface temperatures to the north of Australia and the cool of the continent. And as we know, this aided the development of the jet stream over Australia. In November 2020, the continent started off relatively warm. And for a large portion of the month, there was a large high-pressure system over Australia, pulling warmer air from the tropics over the continent. This system would have also promoted clear skies over Australia and enhanced heating coming from the sun, contributing to the warm Australian continent in November 2020. <h2>More puzzle pieces to fit</h2> November 2020’s hot, dry conditions were not the only time a climate driver has failed to bring the conditions some had anticipated. Just last year El Niño <a href="https://www.theguardian.com/australia-news/2024/jan/03/experts-warned-el-nino-was-likely-to-bring-australia-a-hot-dry-summer-what-happened">did not deliver</a> expected dry conditions, leaving many people scratching their heads. Climate drivers play an important role in shaping rainfall. But they’re not the whole story. As our research shows, sometimes they are confounded by changes in weather patterns, which might mean that our expectations of a wet month or season don’t always play out. When it comes to Australia’s climate puzzle, these findings show there’s more to understand about the role of weather.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/233345/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/carly-tozer-1404662">Carly Tozer</a>, Senior Research Scientist, <a href="https://theconversation.com/institutions/csiro-1035">CSIRO</a> and <a href="https://theconversation.com/profiles/james-risbey-2011">James Risbey</a>, Researcher, Oceans and Atmosphere, <a href="https://theconversation.com/institutions/csiro-1035">CSIRO</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/is-australias-climate-confusing-you-heres-why-rainfall-and-temperatures-dont-always-behave-as-expected-233345">original article</a>. </div>

Domestic Travel

Millions warned as dangerous disease spreads in Melbourne

Health authorities have issued an urgent warning to Victorians after multiple people have been admitted to hospital with severe symptoms. Victoria's Department of Health has revealed it is investigating an outbreak of Legionnaires disease after a "significant increase" in cases across Melbourne since Friday. Over just three days, 22 cases of the disease have been confirmed with another six cases suspected. Most of the cases are in adults aged over 40, with many of them requiring hospitalisation and intensive care for severe pneumonia. Health authorities are now searching for the source of the outbreak, as the health department said in a statement, "Legionnaires' disease can cause a chest infection with symptoms of fever, chills, cough, headache and muscle aches and pains. Other atypical symptoms may include nausea, vomiting, diarrhoea and confusion." "All cases have visited or reside in metropolitan Melbourne. Those most at risk are adults aged over 40 years, especially people with other medical conditions or immune compromise, or who smoke." The source of the outbreak is not yet known but investigations are underway to determine where it has come from. Legionnaires' disease is spread by breathing in fine droplets of water that contain legionella bacteria, and is not commonly spread from person-to-person or by drinking contaminated water. The <a href="https://www.health.vic.gov.au/health-alerts/outbreak-of-legionnaires-disease-in-metropolitan-melbourne" target="_blank" rel="noopener">Department of Health</a> is urging anyone who lives in, works in or has visited metropolitan Melbourne and surrounding areas to seek urgent medical care if they develop symptoms. Image credits: Shutterstock

Caring

Happy Days star's warning to tourists after costly mistake

Happy Days star Henry Winkler has issued a warning to fans about rickshaw rides in London, after he was charged £134 (AU$250) for a short trip. The star revealed on X, formerly Twitter, that he was left with the huge bill after taking a ride on the pedicab, and attached a picture from the back of the rickshaw. “TRAVEL TIP: Do not take one of these bicycle taxis without absolutely negotiating the price first. This person in London rode us around in circles then finally to our destination seven blocks away … for $170 US!" he wrote. “My fault, I paid, but passenger beware! A few hours later, he reiterated his point and added: "Can NOT say this enough." Fans were quick to back the veteran actor, with one saying: “How can the guy do The Fonz like that?” Others urged him to take the tube or a cab instead, with one writing: "I would've taken you for free." <blockquote class="twitter-tweet"> TRAVEL TIP: DO NOT take one of these bicycle taxis without absolutely negotiating the price first. This person in London rode us around in circles then finally to our destination 7 blocks away...for $170 US! My fault, I paid, but passenger beware! <a href="https://t.co/l9yxNUkOuM">pic.twitter.com/l9yxNUkOuM</a> — Henry Winkler (@hwinkler4real) <a href="https://twitter.com/hwinkler4real/status/1808556199824273671?ref_src=twsrc%5Etfw">July 3, 2024</a></blockquote> Another former cab driver added: "London cabbies are known for being honest, knowledgeable, and decent-It takes a full year for someone to gain all the Knowledge necessary to become a cab driver. I believe they drive black cars. Anyway, this is a former cabbie telling you to grab a real cab." To which Winkler replied: "I did all the time. For that moment I LOST my mind." According to the U.K's Local Government Association, pedicabs have been able to charge extortionate prices because they are "exempt from the regulations which cover taxis and private hire vehicles. "They do not need a [license] to operate, are able to set their own prices and are not subject to checks on the safety and ability of their drivers, or the road worthiness of their vehicles." However, Transport for London is stepping in to license rickshaw riders and regulate their fares to bring it into line with other forms of transport in the city. Image: Mark Doyle/ Shutterstock Editorial

Travel Trouble

Southern Australia is freezing. How can it be so cold in a warming climate?

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/andrew-king-103126">Andrew King</a>, <a href="https://theconversation.com/institutions/the-university-of-melbourne-722">The University of Melbourne</a> People living in southern Australia won’t have failed to notice how cold it is. Frosty nights and chilly days have been the weather for many of us since the start of July. As winter continues, we are left wondering how unusual the cold is and whether we can expect several more months of this. Warmer conditions are in the forecast but winter has a long way to go. Further cold snaps could occur. Cold conditions have been in place across southern Australia for the past few days. Temperatures have fallen below zero overnight in many places. It’s not just the nights that have been cold. Maximum temperatures have also been below or well below average across most of the country. <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/604809/original/file-20240704-20-l50kpt.gif?ixlib=rb-4.1.0&q=45&auto=format&w=1000&fit=clip"><img src="https://images.theconversation.com/files/604809/original/file-20240704-20-l50kpt.gif?ixlib=rb-4.1.0&q=45&auto=format&w=754&fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/604809/original/file-20240704-20-l50kpt.gif?ixlib=rb-4.1.0&q=45&auto=format&w=600&h=412&fit=crop&dpr=1 600w, https://images.theconversation.com/files/604809/original/file-20240704-20-l50kpt.gif?ixlib=rb-4.1.0&q=30&auto=format&w=600&h=412&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/604809/original/file-20240704-20-l50kpt.gif?ixlib=rb-4.1.0&q=15&auto=format&w=600&h=412&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/604809/original/file-20240704-20-l50kpt.gif?ixlib=rb-4.1.0&q=45&auto=format&w=754&h=518&fit=crop&dpr=1 754w, https://images.theconversation.com/files/604809/original/file-20240704-20-l50kpt.gif?ixlib=rb-4.1.0&q=30&auto=format&w=754&h=518&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/604809/original/file-20240704-20-l50kpt.gif?ixlib=rb-4.1.0&q=15&auto=format&w=754&h=518&fit=crop&dpr=3 2262w" alt="" /></a><figcaption>Maximum temperatures have been below average across most of the continent since the last day of June. <a class="source" href="http://www.bom.gov.au/jsp/awap/temp/index.jsp">Bureau of Meteorology</a>, <a class="license" href="http://creativecommons.org/licenses/by/4.0/">CC BY</a></figcaption></figure> <h2>What’s causing the cold?</h2> A <a href="http://www.bom.gov.au/australia/charts/synoptic_col.shtml">persistent and strong high-pressure system</a> has been hanging around over southeast Australia. The atmospheric pressure was so high it approached the Australian record of 1,044.3 hPa set on June 7 1967. An <a href="https://www.abc.net.au/news/2024-07-04/australias-highest-air-pressure-recorded-weather/104055462">initial observation</a> of a new record has since been disregarded, but nonetheless this is an exceptional, near-record high-pressure pattern. This high-pressure system has kept the weather dry but clear nights have allowed strong cooling of the land surface. The long nights and short days of early July mean that temperatures struggle to rise during the day and can fall quickly in the evenings. In winter we expect cold weather across most of Australia and occasional cold snaps that bring widespread frosty and icy conditions. However, this current cold weather is pretty unusual and we are seeing some records fall. Notably, Tasmania has had its <a href="https://www.weatherzone.com.au/news/tasmanias-2ndcoldest-night-on-record/1889603">lowest July temperature on record</a> and the second-lowest minimum temperature for any time of year with –13.5°C at Liawenee in central Tasmania early on Thursday morning. While Tasmania has produced the most remarkable records, the cold conditions have been unusual elsewhere too. Adelaide recorded its lowest temperature in 18 years on Wednesday morning. And many suburbs of Melbourne experienced a sub-zero night and consecutive nights of <a href="https://www.metoffice.gov.uk/weather/learn-about/weather/types-of-weather/frost-and-ice/frost">ground frost</a>. <h2>Winters are warming but cold spells still occur</h2> As the world is warming, it might seem surprising we can still break cold records. Indeed, across Australia <a href="http://www.bom.gov.au/cgi-bin/climate/change/timeseries.cgi?graph=tmean&area=aus&season=0608&ave_yr=0&ave_period=6190">winters have been warming</a>. The <a href="http://www.bom.gov.au/cgi-bin/climate/change/extremes/trendmaps.cgi?map=CN05&period=1950">frequency</a> and <a href="http://www.bom.gov.au/cgi-bin/climate/change/extremes/trendmaps.cgi?map=TNmn&period=1950">intensity</a> of very low temperatures have been decreasing over the past few decades. We also see many more hot records than cold records being set in Australia and around the globe. This is <a href="https://theconversation.com/why-hot-weather-records-continue-to-tumble-worldwide-86158">due to human-caused climate change</a>. However, when we have the right weather conditions, cold records are still occasionally broken locally. As we continue to warm the planet, it’s getting harder for us to find cold records, particularly over larger regions or longer time periods. While we still see record cold temperatures at individual weather stations, we won’t see another cold record in the global average temperature and probably not even in the Australian average temperature. As this week shows, we still occasionally get daily cold records in the current climate. But it’s much harder to get record cold months, and record cold years at a given location are almost impossible. As we average weather conditions across locations or over time, the climate change signal becomes clearer over background weather variability. It makes new cold records much less likely to occur. <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/605048/original/file-20240704-21-7ep1rt.png?ixlib=rb-4.1.0&q=45&auto=format&w=1000&fit=clip"><img src="https://images.theconversation.com/files/605048/original/file-20240704-21-7ep1rt.png?ixlib=rb-4.1.0&q=45&auto=format&w=754&fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/605048/original/file-20240704-21-7ep1rt.png?ixlib=rb-4.1.0&q=45&auto=format&w=600&h=426&fit=crop&dpr=1 600w, https://images.theconversation.com/files/605048/original/file-20240704-21-7ep1rt.png?ixlib=rb-4.1.0&q=30&auto=format&w=600&h=426&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/605048/original/file-20240704-21-7ep1rt.png?ixlib=rb-4.1.0&q=15&auto=format&w=600&h=426&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/605048/original/file-20240704-21-7ep1rt.png?ixlib=rb-4.1.0&q=45&auto=format&w=754&h=536&fit=crop&dpr=1 754w, https://images.theconversation.com/files/605048/original/file-20240704-21-7ep1rt.png?ixlib=rb-4.1.0&q=30&auto=format&w=754&h=536&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/605048/original/file-20240704-21-7ep1rt.png?ixlib=rb-4.1.0&q=15&auto=format&w=754&h=536&fit=crop&dpr=3 2262w" alt="A graphic showing the increase in annual average temperature for Australia from 1910 to 2023" /></a><figcaption>The climate change signal is becoming clearer as Australia’s annual average temperature continues to increase with each decade, widening the difference from the long-term mean. <a class="source" href="http://www.bom.gov.au/climate/current/annual/aus/#tabs=Temperature">Bureau of Meteorology</a>, <a class="license" href="http://creativecommons.org/licenses/by/4.0/">CC BY</a></figcaption></figure> <h2>How much longer will this cold snap last?</h2> Southern Australia is experiencing a cold snap at close to the coldest time of year. It’s not long after the winter solstice, when we experience the longest night of the year. We still have a few more cold days and nights ahead in parts of southeastern Australia. By early next week, the forecast suggests <a href="http://www.bom.gov.au/australia/charts/viewer/index.shtml">warmer conditions</a> will return as the high-pressure system moves east and winds turn northerly. The outlook for the rest of winter points firmly to <a href="http://www.bom.gov.au/climate/outlooks/#/overview/summary">above-average daytime and night-time temperatures</a>. This is partly because a historical average (1981–2018) is used and warming since then means above-average temperatures are going to happen most of the time. In any winter, Australia has cold outbreaks. So, even if the next few months are likely to be warmer than normal, we should expect a few cold days and nights at some point. Learning to live with the cold and improving the <a href="https://www.theguardian.com/news/ng-interactive/2024/jul/03/why-so-many-australian-homes-are-either-too-hot-or-too-cold">quality of insulation in Australian homes</a> would help make our winter cold snaps seem a lot less harsh.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/233977/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/andrew-king-103126">Andrew King</a>, Senior Lecturer in Climate Science, <a href="https://theconversation.com/institutions/the-university-of-melbourne-722">The University of Melbourne</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/southern-australia-is-freezing-how-can-it-be-so-cold-in-a-warming-climate-233977">original article</a>. </div>

Domestic Travel

Jimmy Barnes warns fans about fake accounts

Jimmy Barnes has issued a "fake account alert" to his fans. The Aussie singer took to Instagram to warn his followers that there have been an increase in the number of people online pretending to be him or claiming to have direct access to him. "There have been an increasing number of fake profiles appearing in the comments of my socials media posts, claiming to either be me, have direct access to me, sell tickets to shows, and even going as far as posing as a fan trying to connect with other fans," he wrote. "These accounts also send friend or follow requests, which then progresses to more false claims, often requesting large or small sums of money," the Cold Chisel star added. He then urged his followers to take action against these fake profiles. "Please block and report any profile and or comment that makes these claims, as it would never be myself or any of my team. Look after each other," he continued. <blockquote class="instagram-media" style="background: #FFF; border: 0; border-radius: 3px; box-shadow: 0 0 1px 0 rgba(0,0,0,0.5),0 1px 10px 0 rgba(0,0,0,0.15); margin: 1px; max-width: 540px; min-width: 326px; padding: 0; width: calc(100% - 2px);" data-instgrm-permalink="https://www.instagram.com/p/C84CmW9yKBs/?utm_source=ig_embed&utm_campaign=loading" data-instgrm-version="14"> <div style="padding: 16px;"> <div style="display: flex; flex-direction: row; align-items: center;"> <div style="background-color: #f4f4f4; border-radius: 50%; flex-grow: 0; height: 40px; margin-right: 14px; width: 40px;"> </div> <div style="display: flex; flex-direction: column; flex-grow: 1; justify-content: center;"> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; margin-bottom: 6px; width: 100px;"> </div> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; width: 60px;"> </div> </div> </div> <div style="padding: 19% 0;"> </div> <div style="display: block; height: 50px; margin: 0 auto 12px; width: 50px;"> </div> <div style="padding-top: 8px;"> <div style="color: #3897f0; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: 550; line-height: 18px;">View this post on Instagram</div> </div> <div style="padding: 12.5% 0;"> </div> <div style="display: flex; flex-direction: row; margin-bottom: 14px; align-items: center;"> <div> <div style="background-color: #f4f4f4; border-radius: 50%; height: 12.5px; width: 12.5px; transform: translateX(0px) translateY(7px);"> </div> <div style="background-color: #f4f4f4; height: 12.5px; transform: rotate(-45deg) translateX(3px) translateY(1px); width: 12.5px; flex-grow: 0; margin-right: 14px; margin-left: 2px;"> </div> <div style="background-color: #f4f4f4; border-radius: 50%; height: 12.5px; width: 12.5px; transform: translateX(9px) translateY(-18px);"> </div> </div> <div style="margin-left: 8px;"> <div style="background-color: #f4f4f4; border-radius: 50%; flex-grow: 0; height: 20px; width: 20px;"> </div> <div style="width: 0; height: 0; border-top: 2px solid transparent; border-left: 6px solid #f4f4f4; border-bottom: 2px solid transparent; transform: translateX(16px) translateY(-4px) rotate(30deg);"> </div> </div> <div style="margin-left: auto;"> <div style="width: 0px; border-top: 8px solid #F4F4F4; border-right: 8px solid transparent; transform: translateY(16px);"> </div> <div style="background-color: #f4f4f4; flex-grow: 0; height: 12px; width: 16px; transform: translateY(-4px);"> </div> <div style="width: 0; height: 0; border-top: 8px solid #F4F4F4; border-left: 8px solid transparent; transform: translateY(-4px) translateX(8px);"> </div> </div> </div> <div style="display: flex; flex-direction: column; flex-grow: 1; justify-content: center; margin-bottom: 24px;"> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; margin-bottom: 6px; width: 224px;"> </div> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; width: 144px;"> </div> </div> <p style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; line-height: 17px; margin-bottom: 0; margin-top: 8px; overflow: hidden; padding: 8px 0 7px; text-align: center; text-overflow: ellipsis; white-space: nowrap;"><a style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: normal; line-height: 17px; text-decoration: none;" href="https://www.instagram.com/p/C84CmW9yKBs/?utm_source=ig_embed&utm_campaign=loading" target="_blank" rel="noopener">A post shared by Jimmy Barnes (@jimmybarnesofficial)</a> </div> </blockquote> He then shared screenshots of all the social media accounts posing as him, and a montage of all the messages they send to fans. One of the scammers wrote: "Hello thank you for your like and comments on my official page and for being a fan, it's great to know I have such a devoted fan. Much love, click on this page to send me a message." Many of the scammers had similar messages, asking fans to message them, click on a link or add them on social media. This is not the first time scammers have tried using the singer's name to con devoted fans. In 2022, Barnes slammed scammers pretending to be him and using a fake "farewell" ad on social media, which was nothing more than a cryptocurrency scam, according to The Daily Telegraph. Speaking through his manager, John Watson, Barnes said at the time that he was angry about the "illegal and misleading ads" that have allowed "scammers to prosper". Images: Instagram

Legal

Aussies warned over new nbn scam

Aussies have been warned against a new nbn scam targeting businesses and residents. Last year, about 1,800 Australians lost more than $1.2 million to scammers pretending to be nbn employees in a remote access scam. Now, they have found a new way to scam unsuspecting businesses and residents by pretending to be employees and getting people to hand over their personal details and money in areas where actual nbn employees are working. The opportunistic scammers have been randomly knocking on doors or cold calling homes in areas where nbn technicians are installing new fibre. A few people have already been duped, with nbn impersonators calling customers claiming they need money to pay for new internet hardware or postage costs. Scammers have also offered to inspect people's homes for a nbn fibre upgrade and took their bank account details in the process. Other impersonators have called customers saying they would show up a few days later, despite having no prior appointment booked. Scammers have also impersonated staff, and used the presence of actual nbn vehicles on the street as proof of their authenticity. “These impersonators are also asking residents for payment to test their services or secure upgrades and repair works in the future,” nbn Local head Chris Cusack said. “In taking the payment these people are then skimming banking and card details to extract more money afterwards. “We are asking residents to be extra-vigilant against scams, especially while legitimate nbn work is underway.” Nbn has advised that their technicians would always contact people to ensure they were aware of visits before their appointments, and inform them of where they will be doing fibre upgrades. They also send their customers texts to confirm or cancel the appointment, and let them know when they are on their way. Nbn technicians never ask for payment for an appointment, postage costs, hardware costs, or access to any devices. Approved technicians and workers all carry identification cards, and the nbn Local head suggested that customers should always request to see the card before providing access to their residence. “Do not share your bank or personal details with an unsolicited caller or with people who door knock claiming to be from nbn trying to sell you an nbn service or seeking payment for related services,” Cusack said. “If you get contacted like this, please close your door, or hang up the phone and report it to the ACCC’s Scam watch.” Images: news.com.au

Legal

Dog care below freezing − how to keep your pet warm and safe from cold weather, road salt and more this winter

<div class="theconversation-article-body"> <a href="https://theconversation.com/profiles/erik-christian-olstad-1505284">Erik Christian Olstad</a>, <a href="https://theconversation.com/institutions/university-of-california-davis-1312">University of California, Davis</a> Time outside with your dog in the spring, summer and fall can be lovely. Visiting your favorite downtown café on a cool spring morning, going to a favorite dog park on a clear summer evening or going on walks along a river when the leaves are changing color are all wonderful when the weather is favorable. But in much of the country, when winter rolls around, previously hospitable conditions can <a href="https://theconversation.com/is-winter-miserable-for-wildlife-108734">quickly turn chilly and dangerous</a> for people and pups alike. Winter brings some unique challenges for dog owners, since dogs still need activity and socialization during colder seasons. Studies have shown that dog owners are almost 50% less likely to walk their dogs <a href="https://doi.org/10.3390/ani11113302">when the weather gets cold</a>. Knowing the basics of winter safety is critical to maintaining a healthy lifestyle for your dog. I am an <a href="https://www.vetmed.ucdavis.edu/faculty/erik-olstad">assistant professor</a> at the University of California Davis School of Veterinary Medicine who weathered polar vortexes with my dog while living in Michigan early in my career. While I’ve since moved to sunny California, I’ve seen how quickly frigid temperatures can turn dangerous for pets. <h2>Breed and age differences</h2> Not all dogs have the same abilities to deal with cold weather. A short-coated dog like a Chihuahua is much more susceptible to the dangers of cold weather than a thick-coated husky. When the weather dips below 40 degrees Fahrenheit (4 degrees Celsius), the well-acclimated husky may be comfortable, whereas the Chihuahua would shiver and be at risk of hypothermia. Additionally, if your dog is used to warm weather, but you decide to move to a colder region, the dog will need time to acclimate to that colder weather, even if they have a thick coat. Age also affects cold-weather resilience. Puppies and elderly dogs can’t withstand the chill as well as other dogs, but every dog is unique – each may have individual health conditions or physical attributes that make them more or less resilient to cold weather. <h2>When is my dog too cold?</h2> Pet owners should be able to recognize the symptoms of a dog that is getting too cold. Dogs will shiver, and some may vocalize or whine. Dogs may resist putting their feet down on the cold ground, or burrow, or try to find warmth in their environment when they are uncomfortable. Just like people, <a href="https://vcahospitals.com/know-your-pet/frostbite-in-dogs">dogs can get frostbite</a>. And just like people, the signs can take days to appear, making it hard to assess them in the moment. The most common sites for frostbite in dogs are their ears and the tips of their tails. Some of the initial signs of frostbite are skin discoloring, turning paler than normal, or purple, gray or even black; red, blistered skin; swelling; pain at the site; <a href="https://www.britannica.com/science/ulcer">or ulceration</a>. Other <a href="https://vcahospitals.com/know-your-pet/frostbite-in-dogs">serious signs of hypothermia</a> include sluggishness or lethargy, and if you observe them, please visit your veterinarian immediately. A good rule to live by is if it is too cold for you, it is too cold for your dog. Getting your dog a <a href="https://www.cnn.com/cnn-underscored/pets/best-winter-dog-coats-jackets">sweater or jacket</a> and <a href="https://www.akc.org/expert-advice/vets-corner/protect-dogs-paws-snow-ice-salt/">paw covers</a> can provide them with protection from the elements and keep them comfortable. Veterinarians also recommend closely monitoring your dog and limiting their time outside when the temperature nears the freezing point or drops below it. <h2>Road salt dangers</h2> Road salt that treats ice on streets and sidewalks <a href="https://www.cbc.ca/news/canada/kitchener-waterloo/ice-salt-toxic-for-pets-1.5020088">can also harm dogs</a>. When dogs walk on the salt, the sharp, rough edges of the salt crystals can irritate the sensitive skin on their paws. Dogs will often lick their feet when they’re dirty, wet or irritated, and if they ingest any salt doing that, they may face GI upset, dehydration, kidney failure, seizures or even death. Even small amounts of pure salt can <a href="https://www.petpoisonhelpline.com/pet-tips/my-dog-ate-road-salt-will-they-be-okay/">disrupt critical body functions</a> in dogs. Some companies make pet-safe salt, but in public it can be hard to tell what type of salt is on the ground. After walking your dog, wash off their feet or boots. You can also keep their paw fur trimmed to prevent snow from balling up or salt collecting in the fur. Applying a thin layer of petroleum jelly or <a href="https://www.akc.org/expert-advice/lifestyle/how-to-make-your-own-paw-balm-for-winter/">paw pad balm</a> to the skin of the paw pads can also help protect your pet’s paws from irritation. <h2>Antifreeze risks</h2> <a href="https://www.britannica.com/science/antifreeze-chemical-substance">Antifreeze, or ethylene glycol</a>, is in most vehicles to prevent the fluids from freezing when it gets cold out. Some people pour antifreeze into their toilets when away from their home to prevent the water in the toilet from freezing. Antifreeze is an exceptionally dangerous chemical to dogs and cats, as it tastes sweet but can be deadly when ingested. If a pet ingests even a small amount of antifreeze, the substance causes a chemical cascade in their body that results in severe kidney damage. If left untreated, the pet may have <a href="https://www.petpoisonhelpline.com/pet-owner-blog/antifreeze-poisoning/">permanent kidney damage or die</a>. There are safer antifreeze options on the market that use ingredients other than ethylene glycol. If your dog ingests antifreeze, please see your veterinarian immediately for treatment. When temperatures dip below freezing, the best thing pet owners can do is keep the time spent outside as minimal as possible. Try some <a href="https://www.akc.org/expert-advice/lifestyle/great-indoor-games-to-play-with-your-dog/">indoor activities</a>, like hide-and-seek with low-calorie treats, fetch or even an interactive obstacle course. Food puzzles can also keep your dog mentally engaged during indoor time. Although winter presents some unique challenges, it can still be an enjoyable and healthy time for you and your canine companion.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/221709/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/erik-christian-olstad-1505284">Erik Christian Olstad</a>, Health Sciences Assistant Professor of Clinical Veterinary Medicine, <a href="https://theconversation.com/institutions/university-of-california-davis-1312">University of California, Davis</a> Image credits: Getty Images This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/dog-care-below-freezing-how-to-keep-your-pet-warm-and-safe-from-cold-weather-road-salt-and-more-this-winter-221709">original article</a>. </div>

Family & Pets

Kochie's warning for every Aussie parent

Australian finance expert David Koch has warned parents to think twice before offering financial assistance to their adult children who are thinking of buying their first home. With many young Australians looking to buy property turning to the “Bank of Mum and Dad” for financial help, Kochie has advised parents to approach this with caution, structured agreements, and clear communication, to reduce the risks and protect both parties involved. “The Bank of Mum and Dad provided $2.7 billion to their adult children to buy property over the past year," the finance expert said on his latest column in The Nightly He encouraged a structured approach to navigating the common intergenerational finance practice, and added that financial assistance from parents has become a significant player in the housing market. “If it was an actual bank, it would be somewhere between the fifth and ninth biggest mortgage lender," he said, referring to an estimation by the Productivity Commission. He then warned against the casual approach that is often taken, saying: “We all want to help our kids … But the question is what that help looks like.” “Treat the loan as a business transaction and draw up a formal agreement between each party outlining the terms of the deal, including a set repayment schedule,” he emphasised. Kochie also drew attention to the University of Newcastle’s findings on the increased risk of financial elder abuse associated with parental assistance. “Borrowing from the Bank of Mum and Dad encourages ageist attitudes, which leads to kids financially abusing their parents," he quoted the study. He then differentiated the different forms of financial assistance, explaining the difference between gifts, loans, and guarantees. “If your child is married or in a de facto relationship and it ends, gifts will usually be considered part of the family assets and divided up in court,” he warned. He also offered guidance on parental investments in entrepreneurial ventures, advising parents to “think of your role as that of a regular investor." Image: news.com.au

Money & Banking

Yes, it’s getting more humid in summer. Here’s why

<a href="https://theconversation.com/profiles/steven-sherwood-272">Steven Sherwood</a>, <a href="https://theconversation.com/institutions/unsw-sydney-1414">UNSW Sydney</a> Has Sydney felt more like Cairns lately? You’re not imagining it – millions of Australians up and down the east coast have sweltered through exceptionally high humidity in recent weeks. It’s due to normal weather patterns combined with a boost from global warming. Right now, the temperature of the sea surface is <a href="http://www.bom.gov.au/products/IDYOC052.Aus.SSTAnomaly.shtml">1–3°C above normal</a> for this time of year up and down the east coast. It’s particularly hot around the Queensland-New South Wales border and Tasmania’s east coast. When we have high ocean temperatures, we get more water evaporating. This is taken up by the air, which can hold more moisture when the air is hotter. This moist air is then carried to us by winds, and the sweating begins. <h2>Where does humidity come from?</h2> Humidity is just gaseous water held in the air after evaporating from liquid water or ice. It is called a vapour because it condenses into rain — the more humid, the more likely rain is. Higher humidity makes us feel hotter in warm weather, and slows the drying of laundry on a clothesline or of plants in the garden. How do we measure it? Two common ways are the “dew point” and “relative humidity”. At any given air temperature, there’s a limit to how much vapour the air will retain. Any vapour above this limit will just condense out. But the limit roughly doubles with every 10°C of warming; the dew point is the temperature where the vapour would hit the limit. The less vapour there is in the air, the colder the dew point. Relative humidity is the ratio of how much vapour the air has compared to the maximum it would retain. If you’re in Tasmania and see that relative humidity is at 100%, you might be confused. But this measure essentially tracks how “full” the air is. At 100% relative humidity, the dew point matches the actual temperature and no more vapour can be added. If the dew point is 10°C below the actual temperature, relative humidity is about 50%. How do we measure it? The dew point can be measured directly using a chilled mirror and a laser to detect condensation. More often it’s calculated from measurements of relative humidity and temperature. Relative humidity determines whether material exposed to the air will moisten or dry out. That’s why relative-humidity sensors use cheap water-absorbing materials (early ones used a strand of human hair!). <h2>What does a changing climate mean for humidity?</h2> The world’s higher ocean temperatures are unambiguously attributable to global warming, largely from the greenhouse gases we have added by burning fossil fuels. To date, more than 90% of all the extra heat thereby trapped has gone into the oceans. The amount of water vapour over the oceans has increased by roughly 5% since the industrial era began, in lockstep with global warming. Global warming will continue until we stop it. That means the atmosphere will keep getting more humid. If the world manages to keep global warming below 2°C, we should avoid the worst health outcomes from more humidity. But even then, we would expect up to another 5% increase in peak water vapour. Right now, we are seeing higher-than-normal temperatures in most of our surrounding oceans, with only a few exceptions. The areas hit hardest by rising humidity are mostly those that are already humid, like Queensland and the Northern Territory. Although peak dew points are rising, you may be confused to hear average relative humidity is actually <a href="https://www.pnas.org/doi/full/10.1073/pnas.1722312115">falling over land</a>. That’s because the land is warming so fast the average dew points aren’t quite keeping up with temperature, lowering the ratio. That means, alas, that Australia faces a double whammy: increasing water stress and bushfire risk as well as sweatier summers. <h2>Humidity can be very dangerous</h2> Our natural cooling system in hot weather is evaporation of sweat. Sweat forms on your skin, and the air evaporates it, taking the heat with it. But this only works to a point. When the dew point is higher, our self-cooling methods get less and less effective. How important this is depends on how hot you feel. On a moderate but muggy day, you might feel fine until you need to climb four flights of stairs and end up sweaty and exhausted. On a hotter but less muggy day you’d feel the heat at the outset, but would more easily handle the stairs. The Bureau of Meteorology uses something called “<a href="https://media.bom.gov.au/social/blog/1153/apparent-feels-like-temperature/">apparent temperature</a>” to capture the combined effect of temperature and humidity, although this assumes you’re not exerting yourself. How you feel with more exertion can be captured by other measures, such as the “wet bulb globe temperature” now being used at sporting events such as the Australian Open. The Bureau has recently begun providing <a href="http://www.bom.gov.au/places/nsw/sydney/forecast/detailed/">humidity and apparent temperature forecasts</a> as a beta product, which is great for activity planning. This type of information will become more important as the heat builds. As humidity increases during peak humid heat episodes, it makes heat stress worse and moves us toward our body’s physical limits. <a href="https://www.pnas.org/doi/10.1073/pnas.2316003120">Recent research</a> has shown the combination of humidity and heat could make parts of the planet unlivable if Paris Agreement targets are not met, beginning in India and spreading elsewhere in the tropics – including the Top End of Australia. We need to prepare now for increasing heat, while doing everything we can to stop the routine burning of fossil fuels as soon as possible to maintain a margin of safety for humanity.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/221748/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/steven-sherwood-272">Steven Sherwood</a>, Professor of Atmospheric Sciences, Climate Change Research Centre, <a href="https://theconversation.com/institutions/unsw-sydney-1414">UNSW Sydney</a> This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/yes-its-getting-more-humid-in-summer-heres-why-221748">original article</a>.

Domestic Travel

What does El Niño do to the weather in your state?

<a href="https://theconversation.com/profiles/kimberley-reid-767059">Kimberley Reid</a>, <a href="https://theconversation.com/institutions/monash-university-1065">Monash University</a> You’ve probably heard El Niño brings hot and dry weather to the eastern states, but what about the rest of Australia? Are we all in for a scorcher this summer? El Niño is what scientists call a <a href="https://www.climatechangeinaustralia.gov.au/en/overview/climate-system/australian-climate-influences/">climate driver</a>. But it’s just one of many. These climate drivers control year-to-year variations in the weather. Some years are hotter and drier, while others are cooler and wetter. Australia is particularly prone to weather whiplash because our continent is buffeted by climate drivers to our north, south, east and west. The dominant driver in your state may be one of the lesser-known influences. <figure><iframe src="https://www.youtube.com/embed/iVhi1wq2sTY?wmode=transparent&start=0" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe><figcaption>Understanding Climate Drivers (Bureau of Meteorology)</figcaption></figure> <h2>East: El Niño Southern Oscillation</h2> The El Niño Southern Oscillation (ENSO) is the resident climate driver in the Pacific Ocean and the driver with the biggest influence over Australian weather. Differences in sea surface temperatures and winds across the Pacific determine whether we swing towards El Niño (the boy) or La Niña (the girl). <a href="http://www.bom.gov.au/climate/about/?bookmark=enso">During the El Niño phase</a>, sea surface temperatures near South America are warmer than normal and they are cooler than normal off the coast of eastern Australia. Additionally, trade winds that blow from east to west across the Pacific weaken. El Niño brings hotter daytime temperatures, but often <a href="http://www.bom.gov.au/climate/enso/#tabs=Pacific-Ocean&pacific=History">cooler nights</a>. That’s because reduced cloud cover allows more heat to escape into space overnight. So the same process that increases the chances of heatwaves can also raise the <a href="https://www.agric.wa.gov.au/climate-weather/historical-frost-and-heat-maps-south-west-land-division">risk of frost</a> in Western Australia, New South Wales, the Australian Capital Territory and Victoria. Australia as a whole is typically drier during an El Niño event. In the tropical regions, El Niño can delay the <a href="http://www.bom.gov.au/climate/updates/articles/a008-el-nino-and-australia.shtml">onset of the monsoon and reduce the likelihood of tropical cyclones</a>. In the southern states, the hot and dry conditions increase the chance of intense bushfires. La Niña is the opposite phase. Waters off eastern Australia are warmer than usual, increasing the <a href="http://www.bom.gov.au/climate/enso/#tabs=Pacific-Ocean&pacific=History&enso-impacts=La-Ni%C3%B1a-impacts">chance of tropical cyclones</a> and an earlier start to the monsoon for WA, the Northern Territory and Queensland. So what does El Niño do to the weather in your state? Hover over your state in the interactive map to find out. <iframe id="tc-infographic-1008" class="tc-infographic" style="border: none;" src="https://cdn.theconversation.com/infographics/1008/7f37ae91389db072906b320ffd54d0fefd840c0d/site/index.html" width="100%" height="400px" frameborder="0"></iframe> <h2>West: Indian Ocean Dipole</h2> The <a href="http://www.bom.gov.au/climate/about/?bookmark=iod">Indian Ocean Dipole</a> is like ENSO’s Indian Ocean cousin. A positive Indian Ocean Dipole is declared when ocean temperatures near Africa are warmer than normal and ocean temperatures off the coast of Sumatra are cooler than usual. A positive dipole tends to bring warmer and drier conditions, particularly to western and central Australia. A negative Indian Ocean Dipole is the reverse and is associated with wetter than normal weather and an increase in <a href="https://pursuit.unimelb.edu.au/articles/why-more-clouds-can-mean-less-rain-in-australia">northwest cloudbands</a>. <h2>North: Madden-Julian Oscillation</h2> The <a href="http://www.bom.gov.au/climate/about/?bookmark=mjo">Madden-Julian Oscillation</a> is a pulse of storms that start in the Indian Ocean, travel over Northern Australia and Indonesia and die in the Pacific Ocean. Ahead of the pulse, the air sinks, causing sunny and dry weather. Under the pulse is high storm activity and typically heavy rainfall. We describe the Madden-Julian Oscillation based on whether the pulse of storms is <a href="http://www.bom.gov.au/climate/mjo/">active or inactive</a> and where the storm activity is located on its path between the Indian and Pacific Oceans. As well as causing rainfall, the Madden-Julian Oscillation can control the timing of the monsoon onset and <a href="http://www.bom.gov.au/climate/about/?bookmark=tc">tropical cyclone formation</a>. <h2>South: Southern Annular Mode</h2> The <a href="http://www.bom.gov.au/climate/about/?bookmark=sam">Southern Annular Mode</a> controls the north and south position of the westerly winds that whizz around the globe in the Southern Ocean. When the winds are further north than usual, we call this the negative phase. But when the westerly wind move towards Antarctica, we call this the positive phase. The phase of the Southern Annular Mode <a href="https://rmets.onlinelibrary.wiley.com/doi/abs/10.1002/joc.1370">affects how many weather systems</a>, like cold fronts, make landfall over southern Australia. A positive mode may also draw tropical moist air south, which happened in 2022 during the extensive flooding over eastern Australia. <h2>Climate drivers control the odds, but not the result</h2> These four key climate drivers affect the weather on average (over months and seasons), but they do not dictate the exact day-to-day weather we experience. As the Gippsland region of Victoria <a href="https://www.theguardian.com/australia-news/2023/oct/05/victoria-floods-flooding-warnings-gippsland-region-flood-and-fires-evacuation">saw in October</a>, heavy rainfall can still occur during an El Niño. <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/561494/original/file-20231124-16-ip8fja.png?ixlib=rb-1.1.0&q=45&auto=format&w=1000&fit=clip"><img src="https://images.theconversation.com/files/561494/original/file-20231124-16-ip8fja.png?ixlib=rb-1.1.0&q=45&auto=format&w=754&fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/561494/original/file-20231124-16-ip8fja.png?ixlib=rb-1.1.0&q=45&auto=format&w=600&h=407&fit=crop&dpr=1 600w, https://images.theconversation.com/files/561494/original/file-20231124-16-ip8fja.png?ixlib=rb-1.1.0&q=30&auto=format&w=600&h=407&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/561494/original/file-20231124-16-ip8fja.png?ixlib=rb-1.1.0&q=15&auto=format&w=600&h=407&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/561494/original/file-20231124-16-ip8fja.png?ixlib=rb-1.1.0&q=45&auto=format&w=754&h=512&fit=crop&dpr=1 754w, https://images.theconversation.com/files/561494/original/file-20231124-16-ip8fja.png?ixlib=rb-1.1.0&q=30&auto=format&w=754&h=512&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/561494/original/file-20231124-16-ip8fja.png?ixlib=rb-1.1.0&q=15&auto=format&w=754&h=512&fit=crop&dpr=3 2262w" alt="Map of Australia showing the difference from normal rainfall during October 2023, with a large wet patch around Gippsland, Victoria." /></a><figcaption>Difference from normal rainfall during October 2023, showing defined wet area around Gippsland, Victoria surrounded by drier conditions. The Bureau of Meteorology</figcaption></figure> Climate drivers are like a football coach. They can select the best players and develop ingenious strategies, but that doesn’t guarantee a win every time. Players can get injured on the field or simply have a bad game. These uncontrollable factors are challenging to predict and may change the result from what we would expect. Scientists call this stochasticity. The climate drivers are the football coach, but the day-to-day weather systems are the players. The Bureau of Meteorology <a href="http://www.bom.gov.au/climate/enso/">releases an update</a> on all of these drivers every two weeks. The update explains which drivers are currently active and the forecast for the next few weeks. So, if you are wondering why the weather is cooler during summer, or it’s raining in the middle of the dry season, perhaps take a look at which driver is steering Australia’s weather at the moment.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/218257/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/kimberley-reid-767059">Kimberley Reid</a>, Postdoctoral Research Fellow in Atmospheric Sciences, <a href="https://theconversation.com/institutions/monash-university-1065">Monash University</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/what-does-el-nino-do-to-the-weather-in-your-state-218257">original article</a>.

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