Wet Bulb Temperature Soon to Become Leading Cause of Death


As our Abrupt Climate Change Catastrophe becomes more extreme the leading cause of death on the planet will be humans hitting their   Wet Bulb Temperature.

Robertscribbler has written about this phenomenon here:

Never-before-seen high temperatures and high humidity are resulting in thousands of heat injuries and hundreds of heat deaths across India. In some places, wet bulb readings appear to be approaching 35 C — a level of latent heat never endured by humans before fossil fuel burning forced global temperatures to rapidly warm. A reading widely-recognized as the limit of human physical endurance and one whose more frequent excession would commit the human race to enduring an increasing number of episodes of killing heat. A boundary that scientists like Dr. James Hansen warned would be exceeded if a human-forced warming of the world was not halted.’  Article continues.

Wet Bulb Near 35 C — Heatwave Mass Casualties Strike India Amidst Never-Before-Seen High Temperatures.’

Short cut to calculating Wet Bulb Temperature

“In a recent study with Matt Huber, we showed that it doesn’t take that many degrees of global warming to permit peak heat summertime heat stress to (occasionally) become unsurvivable, in many parts of the world that are currently highly populated.”

“We came to this conclusion by considering a meteorological quantity called the wet-bulb temperature. You measure this quantity with a normal thermometer that has a damp cloth covering the bulb. It is always lower than the usual or “dry-bulb” temperature; how much lower depends on the humidity. At 100% humidity (in a cloud or fog) they match. In Sydney and Melbourne, even during the hottest weather, the wet-bulb usually peaks in the low 20’s C. The highest values in the world are about 30-31C, during the worst heat/humidity events in India, the Amazon, and a few other very humid places.
Climate Change Research Centre (CCRC) – The University of New South Wales Sydney NSW  Australia, paper shared here:  ‘What is Wet Bulb temperature?

Orange – Heat stroke probable, Red – Heat stroke imminent

Heat Index

Activist, sailor, passionate about the earth and all it's inhabitants without favour . Brace for imminent impact as we bare witness to the non-linear unraveling of the biosphere and habitability disappearing for most if not all complex life on the only habitable planet we know of. To quote President Niinistö in North Russia: ‘If We Lose the Arctic, We Lose the World’. Folks we have lost the Arctic.

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Posted in Habitat, Rapid Climate Change, Warnings
60 comments on “Wet Bulb Temperature Soon to Become Leading Cause of Death
  1. Kevin Hester says:

    Mamals especially will be suseptable to hitting their wet bulb temps. Sadly, that’s us as well, not just the 200 species that go extinct every day.


  2. Kevin Hester says:

    Around the 12 minute mark in this chilling ( pardon the pun) episode of Radio Ecoshock Alex’s guest discusses nuclear power stations having to shut down in heatwaves in Russia, so much for Nuclear being an alternative to fossil fuels.


  3. KEVIN NOTE: my dial-up disconnected while this was posting and didn’t do anything when I re-connected. The page was froze. Please delete if it doubled!

    This may be what knocked me down three weeks ago. I’m on the ‘dry’ side of Washington State but the humidity in these mountains has been abnormally high even with the somewhat cooler temperatures (compared to last year). Haven’t cracked 38C/100F here yet but I’ve been pretty close. It was around 35C/92F and maybe above 50% when I dropped after coming back inside after cutting firebreaks for a couple of hours. Today it’s 32.5C/90′ in the shade and 23%…but I was cutting firebreaks last night after dark! I learned my lesson no doubt. Stay the hell out of the heat ’cause I’m getting too old for that shite!!!

    But having to breathe in 53C/123’F in India in JUNE? Look up the city of Chennai and the drought and water crisis they are in. Trainloads of 2.5 mil litres of water each being brought in daily, and all the reservoirs are dry. Combined with “a daily water deficit of at least 200 million litres” and the monsoons (IF they happen on time, no telling with the crazy Jet Stream) is months away.

    I’m sort of guessing that area of the planet may be where the Great Dying that is coming will probably start. Too many humans, too hot, not enough water, and radical Wet Bulb Effects are already in progress.

    Here’s a thought. The Colorado River Aqueduct comes from Arizona to Riverside SoCal. I have a friend that just drove a Uhaul to Salton Sea (people moving from here to there no less paid him to!) and stopping for the night in Ridgecrest where the 7,1 earthquake and hundreds of aftershocks continue to hit. Said the motion of the ground was causing seasickness and the locals in the motel and local restaurants were very, very nervous. The aqueduct is stretched across east to west maybe a hundred miles south. What do you think is going to happen when a major quake hits (it’s overdue) and suddenly there 14% less water coming in? Maybe the Federal Government will be hauling trains…oh wait the railroads get destroyed by large quakes. And the roads. And it’s getting hotter earlier in SoCal these days…might have to let all those lawns in the desert go, eh? There I go, being the cynical surfer dude again!



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Kevin Hester

Kevin Hester is currently living on Rakino Island, a small island in the Hauraki Gulf near Auckland, New Zealand, monitoring the unravelling of the biosphere and volunteering at the Rakino Island Nursery is currently developing a proposal to create a marine reserve near by. The Island has no grid tied electricity or reticulated water.  I catch my own water from the roof and generate my electricity from the ample solar radiation on the island.

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