So, the temperatures in the Pacific Northwest probably cooked around a billion sea animals.
Dead.
A billion.
The town of Lytton, which reached Canada’s hottest ever temperature, later burned down: 90 percent of the buildings gone. (Back in the 80s, I drove through Lytton a few times, can’t say I know it, but I spent a lot of time in the country around it.)
We’ve already hit high enough temperatures to kill some animals outright.
Humans can get there as well: It’s known as the wet bulb temperature.
The wet-bulb temperature (WBT) is the temperature read by a thermometer covered in water-soaked cloth (wet-bulb thermometer) over which air is passed.
This is to see what temperature it is with evaporation. If the wet bulb temperature hits 35 celcius, humans can’t lose heat, even if they drink water, and will die.
This corresponds to 95 percent humidity, and 88 F (31.1 Celcius.) The lower the humidity, the more heat you can take before dying, a.k.a., “It’s not the heat, it’s the humidity.”
These are ideals, though, a lot of people die at lower wet-bulb temperatures, because they aren’t perfectly healthy or the heat just keeps going and going.
A researcher noted that just how bad high wet-bulb is:
“Even if they’re in perfect health, even if they’re sitting in the shade, even if they’re wearing clothes that make it easy in principle to sweat, even if they have an endless supply of water,” Horton said. “If there’s enough moisture in the air, it’s thermodynamically impossible to prevent the body from overheating.”
Coming to somewhere near you?
Most of these wet bulb conditions were concentrated in South Asia, the coastal Middle East, and southwest North America… A growing number of other regions are nearing this point: The Southeast US, the Gulf of Mexico and Northern Australia, all denoted by green on the map, are seeing higher daily maximum wet bulb temperatures.
Obviously air conditioning can protect you, but what if your AC goes out, or worse, there’s a brown or black out? A few hours later, you’re dead. Willing to bet your life on over-stressed power grids?
And, while a little misleading (they aren’t here in any great numbers, yet…), this is normal:
Originally, conditions like this weren’t expected until the mid 21st century, according to climate models. But they are actually already here.
Fun stuff, but what makes it even more difficult is climate instability; after all, much of the Pacific Northwest, especially along the coast, was known for its mild temperatures. (I grew up there, and can attest.)
The core thing to understand is less about heat specifically, and more that climate will keep getting more dangerous, and that you can’t count on government or corporations to keep you safe. You shouldn’t, if you can avoid it, put your life at risk by assuming “the power grid won’t go out when I need it most” or “there’ll always be a continuous supply of food.”
Expect that the highly-taut, over-efficient, no-slack, and unmaintained systems that run our society. optimized for maximum profit and not for resilience, will fail under shocks they were never designed to withstand — especially as our elites now expect such shocks, like Covid, to make them even richer and more powerful.
You aren’t precisely on your own, but don’t count on the normal of the past few decades to predict the future — except the normal of “no one with any power actually cares if you live or die or suffer, if they can make some money from your suffering.”
(My writing helps pay my rent and buys me food. So please consider subscribing or donating if you like my writing.)