Australia Is Being Ravaged by The Worst-Ever Heatwave, And That Says a Lot - Physics-Astronomy.org

Australia Is Being Ravaged by The Worst-Ever Heatwave, And That Says a Lot

Australia may set a record for its hottest day this week, as temperatures soar past 104 degrees (40 Celsius) in most of the nation's major cities, with inland areas of Victoria, New South Wales and South Australia possibly eclipsing 122 degrees (50 Celsius).
The heat wave, which is unusually severe for so early in the summer, is affecting the entirety of the continent, gradually progressing eastward from Perth to Adelaide and on toward Melbourne and Sydney by Friday.





The heat is sure to aggravate the already record-shattering bush fires, which have emitted massive amounts of greenhouse gases and choked Sydney residents beneath a blanket of smoke. Health authorities in New South Wales are warning them to stay indoors during the day's heat.
"When we average temperatures over the country, we're seeing some extremely high values coming up in the forecast," Blair Trewin, a senior climatologist with Australia's Bureau of Meteorology (BOM), said in a video posted to the agency's website.
Some of the records that have either already fallen or are expected to be toppled include:
  • The existing national record for the highest nationally averaged temperature is 104.5 degrees (40.3 Celsius), which was reached in January 2013. "Current indications are that we'll be at least a degree above that on Wednesday and Thursday," Trewin said, calling this "a really extreme event on a nationwide perspective."
  • The BOM is also forecasting that many locations will break monthly records for the hottest temperatures in December. In fact, some places in New South Wales could see their hottest temperature on record for any time of the year, particularly on Saturday, Trewin said.
  • Already, Perth, located in Western Australia, has broken its all-time December record for the number of consecutive days (three) reaching or exceeding 104 degrees (40 Celsius).
  • In Adelaide, the forecast calls for four straight days (through Friday) with high temperatures of 104 degrees or higher, according to BOM meteorologist Sarah Scully.
  • Cities in southeastern Australia could see a sea breeze that prevents temperatures from climbing above 100 degrees during this event right along the coast, but areas just to the northwest of the ocean will sizzle.
According to BOM, extreme heat is Australia's top weather-related killer.


Preliminary results suggest that the 17th December was Australia's hottest day on record at 40.9 ºC, with the average maximum across the country as a whole, exceeding the previous record of 40.3 ºC on the 7th January 2013.
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Bush fires continue to burn out of control

As the heat peaks in southeastern Australia, it will make the job tougher for thousands of firefighters deployed to mega-fires such as the Gospers Mountain blaze raging across nearly 1 million acres to the northwest of Sydney.


Smoke from this fire and others has periodically shrouded the country's largest city in noxious smoke, posing serious health risks, particularly for the young and for those with asthma or other chronic conditions, as well as for the elderly.
This blaze is so large and is burning across such a variety of terrain that Rural Fire Service firefighter Brian Williams told the Sydney Morning Herald that it's impossible to contain.
wild fires burning sydney
New South Wales on Monday, with red dots corresponding to hot spots (wildfires) detected via satellite. (NASA)
"It's such an enormously big fire, it's beyond human ability to control," Williams said.
The bush fires stretch north into Queensland and southwest into Victoria. All of these areas are expected to see a sharp uptick in fire risk with the heat wave, particularly heading into the weekend.
"There are difficult & dangerous fire conditions forecast over coming days," the New South Wales Rural Fire Service said via Twitter.
Climate studies have shown clear and causal links between bush fires — as well as wildfires in the United States — and long-term global warming. Climate change helps escalate fire risk by drying out vegetation and making it more flammable, among other effects.

Tracing the heat to the Indian Ocean, with a push from global warming



average temperature of australia were burning
(Bureau of Meteorology)
The unusually warm and dry year in Australia is due, in part, to a weather pattern that has set up across the Indian Ocean. It's known as the Indian Ocean Dipole, or IOD, which is an air circulation pattern in the Indian Ocean.
When the IOD is in its positive phase, the water is cooler than average off the coast of Sumatra, leading to reduced atmospheric lift there and reduced rainfall over Australia, and there are warmer-than-average waters off the coast of Africa.
This year has seen a record positive IOD, and this helped make the January to October period the second-driest such period on record in Australia.
"It's on track to be one of the driest years on record for Australia," Trewin said, "so you don't have any soil moisture or air moisture to moderate the heat."
positive IOD the past two years has meant drier-than-average conditions in much of Australia. The Bureau of Meteorology found that it's unusual to have back-to-back years with a positive dipole, which helps influence precipitation patterns across South Asia and Oceania.
This natural climate cycle is changing over time as ocean and air temperatures rise in response to increased amounts of greenhouse gases in the air because of human activities, namely the burning of fossil fuels for energy.
This is expected to make back-to-back positive IOD events more common and make Australia even more prone to drought conditions accompanied by extreme heat.
"While the IOD is a natural mode of variability, its behaviour is changing in response to climate change. Research suggests that the frequency of positive IOD events, and particularly the occurrence of consecutive events will increase as global temperatures rise," the bureau stated.


Long-term climate trends in Australia show sharp warming and an increase in extreme heat events. Last summer, for example, was the country's hottest on record, and the meteorology bureau found that climate change exacerbated extreme heat events as well as droughts during the year.
Australia has warmed by just over 1.8 degrees (1 Celsius) since 1910, with most of the warming occurring since 1950. The BOM has found there was an increase in the frequency of extreme heat events and severity of drought conditions during this period as well.
Eight of Australia's top 10 warmest years on record have occurred since 2005, and 2019 is likely to join that list.

2019 © The Washington Post

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    1. KARNA RASA HATI YANG GEMBIRA BERKAT BANTUAN AKI SOLEH
      MAKANYA SENGAJA NAMA BELIAU SAYA CANTUNKAN DI INTERNET !!!

      assalamualaikum wr, wb, saya IBU SUCHI saya Mengucapkan banyak2
      Terima kasih kepada: AKI SOLEH
      atas nomor togelnya yang kemarin AKI berikan "4D"
      alhamdulillah ternyata itu benar2 tembus AKI
      dan berkat bantuan AKI SOLEH saya bisa melunasi semua hutan2…
      orang tua saya yang ada di BANK BRI dan bukan hanya itu AKI alhamdulillah,
      sekarang saya sudah bisa bermodal sedikit untuk mencukupi kebutuhan keluarga saya sehari2.
      Itu semua berkat bantuan AKI SOLEH sekali lagi makasih banyak ya, AKI
      yang ingin merubah nasib
      seperti saya...?
      SILAHKAN GABUNG SAMA AKI SOLEH No; { 082-313-336-747 }

      Sebelum Gabung Sama AKI Baca Duluh Kata2 Yang Dibawah Ini
      Apakah anda termasuk dalam kategori di bawah ini...!!
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      2: Selaluh kalah dalam bermain togel
      3: Barang berharga sudah
      terjual buat judi togel..
      4: Sudah kemana2 tapi tidak
      menghasilkan, solusi yang tepat..!
      5: Sudah banyak dukun ditempati minta angka ritual blom dapat juga,
      satu jalan menyelesaikan masalah anda..
      Dijamin anda akan berhasil
      silahkan buktikan sendiri
      Atau Chat/Tlpn di WhatsApp (WA)
      No WA Aki : 082313336747

      TERIMA KASIH YANG PUNYA
      ROOM ATAS TUMPANGANYA SALAM KOMPAK SELALU

      "KLIK DISINI BOCORAN TOGEL SGP HK SDY DAN DLL"

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