Heatwaves

[Lewis]

Article explaining about dangers of heatwaves when heat is combined with humidity. India recording wet bulb temperatures this year.

 

https://arstechnica.com/science/2022/06/india-isnt-ready-for-a-deadly-combination-of-heat-and-humidity/

Recent heat wave has seen “wet-bulb” temperatures rise to potentially fatal levels

Recent heat wave has seen “wet-bulb” temperatures rise to potentially fatal levels

When heat and humidity combine to push wet-bulb temperatures past 32° Celsius, physical exertion becomes dangerous. Consistent exposure to high wet-bulb temperatures—35° Celsius and above—can be fatal. At this point the sweating mechanism shuts down, leading to death in six hours. On May 1, 2022, the wet-bulb temperature in Lakshmanan’s home city of Chennai hit 31° Celsius. The same day, the district of Ernakulam in the Indian state of Kerala recorded a wet-bulb temperature of 34.6° Celsius—a record high for the area.

 

 

[Lewis]

Record-breaking heat wave envelops nearly 130 million in U.S.

 

https://www.axios.com/2022/06/13/heat-wave-intensifies-plains-chicago-memphis

 

The big picture: The National Weather Service (NWS) is warning that a "dangerous" combination of heat and humidity will affect the majority of the lower 48 states before the week is over, and there are few signs the heat will abate after that. 

• All of Arkansas, Kentucky, Missouri, Mississippi, Illinois, Iowa and Indiana are under heat warnings plus parts of at least a dozen other states.
• The heat wave is courtesy of a strong area of high pressure, or heat dome, that is slowly moving east across the Central U.S. 
• The heat dome is likely to shift eastward during the first part of the week, but then careen back west in a see-saw pattern, setting up hotter conditions again for the Upper Plains and Central states later in the week. 
• Climate change is causing heat waves such as this one to be more severe, frequent and longer-lasting than just a few decades ago.

[Lewis]

Global surface temperature is back on the rise despite La Niña. Next El Niño is going to be brutal, its projected to hit 1.5C.

 

[Lewis]

A heatwave event is underway for the Arctic for the next week or two, 75% of the arctic is expected to be affected by it. Looking at upwards of 30C ish degrees. Should be interesting.

 

 

 

[Lewis]

Big melt is expected in the Arctic this week and the next

 

 

 

[Lewis]

Big melt started today, over 100 000 km2.

[Lewis]

Another over 100 000 km2 of melt today.

[Lewis]

Latest Data is showing the last 5 years has been the hottest on record on Land globally for June-July combined. 2022 breaking that record again. And looking the same so far for June-July-August as well.

 

[Lewis]

Scientists now know how much faster the Arctic is heating up than the rest of the world, where as in the past it was an educated guess. According to Research dating back starting from 1979, the Arctic is heating up four times faster (at the very least) than the rest of the world. Antarctica is also now starting to show signs of diminishing.

 

In the research showed the multiple factors that was proposed as the potential causes.

 

”During the last decade, multiple factors have been proposed to explain the potential causes of AA: enhanced oceanic heating and ice-albedo feedback due diminishing sea ice^6,7,8,9, Planck feedback¹⁰, lapse-rate feedback¹¹, near-surface air temperature inversion¹², cloud feedback¹³, ocean heat transport¹⁴ and meridional atmospheric moisture transport^15,16,17. Furthermore, the reduced air pollution in Europe may have contributed to the Arctic warming during the last decades^18,19, and possible reductions of Asian aerosols under a strong mitigation policy may increase the future AA²⁰. In climate models, it has been shown²¹ that AA occurs rapidly in response to external forcings due to atmospheric lapse rate feedback, with sea ice-related feedbacks becoming more important later on. A recent study²² reported a stronger future AA in a low than a high-emission scenario due to the faster melting of sea ice and weaker ice-albedo feedback.”

 

https://www.ft.com/content/9bb32c6f-b3dc-46bd-944e-9e583407b866

Edited August 18, 2022 by Lewis

[Amygdala]

Vancouver is really getting hit, as are all provinces. Stay cool!!

[Dustparticle]

Whole world is screwed up.

 

[Michał]

9 hours ago, Lewis said:

Scientists now know how much faster the Arctic is heating up than the rest of the world, where as in the past it was an educated guess. According to Research dating back starting from 1979, the Arctic is heating up four times faster (at the very least) than the rest of the world. Antarctica is also now starting to show signs of diminishing.

 

In the research showed the multiple factors that was proposed as the potential causes.

 

”During the last decade, multiple factors have been proposed to explain the potential causes of AA: enhanced oceanic heating and ice-albedo feedback due diminishing sea ice^6,7,8,9, Planck feedback¹⁰, lapse-rate feedback¹¹, near-surface air temperature inversion¹², cloud feedback¹³, ocean heat transport¹⁴ and meridional atmospheric moisture transport^15,16,17. Furthermore, the reduced air pollution in Europe may have contributed to the Arctic warming during the last decades^18,19, and possible reductions of Asian aerosols under a strong mitigation policy may increase the future AA²⁰. In climate models, it has been shown²¹ that AA occurs rapidly in response to external forcings due to atmospheric lapse rate feedback, with sea ice-related feedbacks becoming more important later on. A recent study²² reported a stronger future AA in a low than a high-emission scenario due to the faster melting of sea ice and weaker ice-albedo feedback.”

 

https://www.ft.com/content/9bb32c6f-b3dc-46bd-944e-9e583407b866

What is AA?

[Lewis]

16 minutes ago, Michał said:

What is AA?

Arctic amplification 

 

Essentially means the the ramped up warming that is taking place 67 degrees N Latitude

[Lewis]

1 hour ago, Woanders said:

Vancouver is really getting hit, as are all provinces. Stay cool!!

I’m in Vancouver, there is a heat dome taking place right now.

[Amygdala]

Wow. We have temps here in Germany of hi 20’s early 30’s and humid.

 

But you guys have been getting record temps and high 30’s since July! Last year was also a doozy there. 🔥

[Lewis]

North America has been in some heatwave lately, but new forecast is stating the worst is coming next week for this time of the year.

 

 

 

 

[Lewis]

So in July 2022, 53,000 people died due to heatwaves in Europe. Info came from the Climate Emergency Institute in Victoria, BC.

 

Be curious to see how many deaths in August, seeing August was even hotter.

 

[Lewis]

Heatwave in china continues.

 

[Lewis]

40.9C on October 4th.

 

 

[Lewis]

Heatwave for Australia for the next few days. 40C+ in some areas.

 

[hatcheckgirl]

Yes, this is unseasonally hot, since that top part of Australia gets very hot temps in summer.  But this is something else!  The southern parts have had unusually cool days (which I am grateful for), but it is predicted that in the West, our heat will ramp up immensely soon. 😭

[Lewis]

You must have a good air conditioner at your home to deal with the heat.

[Lewis]

Record heatwave recorded in Thailand over the weekend measuring 45.4C beating the previous record of 44.6C in 2016.

https://www.bangkokpost.com/thailand/special-reports/2551321/heatwaves-to-worsen-experts-warn

 

Expect to see many records to break around the world this year and especially the next.

[Lewis]

A third of the world population is now experiencing a heat wave with record breaking temperatures in 12 countries around Asia.

 

https://www.theverge.com/2023/4/19/23687964/extreme-heatwave-asia-temperature-records

[Witness1970]

I had to look up the Celsius and Fahrenheit temperatures to make a comparison and help me get perspective.  The chart below shows approximate values.

Farhenheit   Centigrade 5   -15 10   -12 15   -9 20   -7 25   -4 30   -1 35   2 40   4 45   7 50   10 55   13 60   16 65   18 70   21 75   24 80   27 85   29 90   32 95   35 100   38 105   41 110   43 115   46 120   49 125   52