Heat Wave and Blackout Would Send Half of Phoenix to E.R., Study Says
nytimes.com
nytimes.com
I suspect most of the worst climate impacts in the coming years will be from issues much like this, with an interplay of factors. We've built a society with many complex systems, and the assumptions those systems were built on (e.g intensity and duration of heat waves) will no longer be valid. I'm skeptical we'll be able to adapt such large-scale systems to the increasingly rapid changes induced by climate change.
P.S: At 100% humidity in shade with unlimited drinking water, a human will die in about 2 hours at 35°C (95°F). The combination of heat and humidity is called the heat index, and those temperatures had already been seen in Iran 3 years ago, when this paper was written: https://phys.org/news/2020-05-potentially-fatal-combinations...
According to the article I linked:
> Not surprisingly, incidents tended to cluster on coastlines along confined seas, gulfs and straits, where evaporating seawater provides abundant moisture to be sucked up by hot air. In some areas further inland, moisture-laden monsoon winds or wide areas of crop irrigation appear to play the same role.
In other words, this problem is worst where a lot of water vapor is being added to the system.
But if global warming hadn't happened at all, there would only be a very small change in the conclusion of this study.
It seems to be extremely unpalatable for people to consider that there are some limits to scale, imposed by our environment.
Next, from a methods perspective, while a single-value estimate is convenient, a distribution, in this scenario, would be much more useful to understand the range of possible deaths and their associated probabilities.
As for the rest of the author's own critiques, I'll lay them out here. One of the most important one is that the population's behavior and government responses are not taken into account. There is, of course, debate as to how much this affects the prediction.
> Our estimates do not account for individuals’ behavioral adaptations or the actions of first responders during such a severe heat crisis. In reality, if a blackout event was regionally localized, many individuals would be able to leave their homes and travel to cooler locations. We also do not account for potential governmental responses to a concurrent heat wave and blackout, such as evacuation of the most vulnerable to heat illness or the deployment of mobile power generators for cooling centers. Other important sources of uncertainty in our analysis include (1) the degree to which measures of relative risk based on outdoor temperatures are reflective of indoor heat exposures, (2) uncertainties in the precision of the ambient and indoor temperature models used for the study, (3) uncertainties in behaviors and locations of individuals throughout the day and hence their daily IETs, and (4) uncertainties in the exposure-response functions in the applied epidemiology studies (including the changing nature of population susceptibility with a period of prolonged heat exposure).
Coping strategies:
* drive a couple hours North and camp in the mountains. 3.5F drop/1000 ft elevation. Flagstaff’s highs in summer are 25F cooler than Phoenix and is a two hour drive away. (You do have at least one gasoline car that will work during an outage, don’t you?)
* swimming pools/water parks/water sprinklers/tepid baths…Salt River 40 minutes drive away. Very low humidity (i.e. Phoenix heatwave) + tepid water + cotton clothing + air drying with any breeze = very cool.
* free-standing evaporative coolers for outdoor sleeping. A 2kWh lithium battery would power a 90W free-standing (4 ft high) evaporative cooler for 20+ hours and blow a continuous 70 degree directable breeze during a 95F (and thus a very low humidity) night. A gas-powered generator would handle a few coolers simultaneously and continuously for not much gasoline. Maybe require such coolers and generators/batteries for any facility housing elderly and other vulnerable. Such coolers are about $200 US. Requires refilling with water every two-three hours, but larger units can be hooked up with a hose to public water utilities, and a float valve in the unit lets them run without intervention.
* adobe buildings
* shade, shade, shade (mad dogs and Englishmen…)
It is worthwhile to highlight the dangers from heat events (recent event in Chicago killed hundreds) and plan mitigation strategies, but making scary predictions outside the realms of common sense is counterproductive. Creative adaptation must be modeled too, for the actual forecasted impacts to be accepted as credible.
For example, I lived in Tucson, AZ and there was a road nearby called "Silverlake" that at one time led to a silver lake with enough power to support a flour mill (see https://tucson.com/news/blogs/streetsmarts/street-smarts-sil...). Now it leads to apartments and houses and an Air Force base.
More people + less water = hotter environment, even before climate change is factored in. A huge amount of the water in the area goes to agriculture as well.
Source: https://patch.com/arizona/phoenix/how-obesity-rate-arizona-c...
https://en.wikipedia.org/wiki/Cold_and_heat_adaptations_in_h...
If you're living in a hot area but used to AC, you're far less able to cope with loss of AC than someone who's been living without it the whole time.
Further, modern dwellings are build with AC in mind. Older ones—by which I mean 50+ years ago, let alone dwellings the native people of the area lived in—were built with airflow & cooling in mind. They might be situated to take advantage of local conditions like shade or prevailing wind. Building for AC means some of that's less important, so gets ignored, and other aspects are deliberately broken to improve AC efficiency (window sizes shrink and there are fewer of them, maybe with none at all on some entire exterior walls, open paths to attic areas that allow up-and-out airflow are avoided, et c). Modern houses become traps in extreme heat if the AC is off, not shelters.
A number of years ago we had an HVAC issue at work on a sunny week. It was shocking how much harder it was to focus and work in the afternoon as the air got stuffy and hot. Our office had some options for airflow, but not many. I've been meaning to look into what ti would take to put some tints on the windows to reduce the heat in the summer.
No: https://en.m.wikipedia.org/wiki/January_1998_North_American_...
Multiple weeks without electricity for some, but only 34 deaths. (And in Quebec, most people heat their houses with electricity)
"Fun" fact: In Montreal, more people die in heatwaves than of cold. Unless you're a drunk hobo that is: because they are shelters in winter, but old people die in summer in crammed apartments without AC.
People could use things like blankets to stay warm and light things on fire for heat. I think they did this before electricity...a relatively new invention.
What is the equivalent for cooling off that doesn't require electricity? In Phoenix, specifically...
You drink a lot of water, don't go out in the sun, cover your body with proper clothes (counterintuitively), hang wet fabric in small ventilators, use hand fans, stay in a basement/underground/lower floors of a building, cover your roof with thick organic material.
[EDIT] OK, that's overstating it in the North. Newer houses & apartments sans AC up there would just mean a couple dozen nights per year sleeping outside, and having to be way more diligent about fighting mold and mildew. Tolerable, but not great. The South, though....
https://www.foxweather.com/extreme-weather/great-texas-freez...
(Maybe people in Texas don't have thick blankets or sleeping bags, and presumably live in homes with substandard insulation?)
In comparison if something happened in my home town of Bellingham on the west coast, they'd be prepared by having the roads salted, making it reasonably clear and that I would've still be able to get supplies even in the case of a blackout.
On one level its goal is to entertain but its also designed to educate about the likelihood and consequences of the carbon climate crisis causing crazy weather and ecosystem collapse. Especially if we dont Go Big soon enough.
It was 108.
As he said this, we were at a stop light next to a Speedy Oil Change facility. Shop doors rolled open, guys in long pants, thick shirts, changing oil and rotating tires.
People that don't work physically underestimate what the human body can do.
I have family in a place that is ususally above 100 in the summer. When I go there from a temperate location I struggle. But after a week or two I am more able to help with yard work, or taking the kids out to the park. If I spend a month the high temperature becomes fairly normal.
To this day I don't handle hot weather well, and I don't mean 110. Anything above mid 70s is very uncomfortable and I sweat profusely and get irritated. This includes sleeping, during the warmer months I always get soaked in my sleep. I drink a lot of water too but it doesn't help.
I’ve done more time in the sun working out (moving) and been totally fine. Difference is I drank huge amounts of Gatorade.
However, I have done this for years. I sweat a lot more, and a lot more quickly, than I used to. There have definitely been both long-term and beginning-of-the-season acclimation periods, and it's a bit of an understatement to say that not everyone is interested in pursuing this. The result is major trailheads being closed in certain conditions due to tourists routinely collapsing, needing rescue, or sometimes passing away. This despite the fact that there are many of us locals who are fine within our limits (that we know and have learned to respect).
Those guys in the Quickielubes have a swamp cooler going at minimum, are acclimated, out of the sun, and are still uncomfortable. The landscapers are up at 5am and disappear as the temps climb. We'll be in the half that don't end up in the ED.
The limits of the human body and our ancestor's ability to survive in these heat waves were dependent on the waves being far shorter and less intense.
One group (representing fossil fuel-linked economies) doesn't want to admit that adaptation is necessary, as that entails accepting that the scientific understanding of our current climate trajectory is robust, and another group (representing politically-minded climate activists) seems to think accepting the necessity of adaptation means 'giving up' on stabilizing the climate and getting off fossil fuels.
Neither of these are rational viewpoints - the tipping point for the climate transition has come and gone, and even an immediate cessation of fossil fuel use would still entail 100+ years of warming at rates comparable to the past 40 years (likely greater) due to the lag in the system (ocean response times) as well as to permafrost thaw. Claiming this isn't the case is really just another kind of denialism.
On top of that, existing fossil fuel infrastructure and production appears set to continue for the next 30 years at current rates (just look at all the new fossil-fuel burning cars, trucks, jets, etc. coming off the production lines each year, or at the business model projections of all the major fossil fuel producers) and despite the political posturing of some politicians in the USA and other fossil fuel producers, there's no real interest in replacing fossil fuels with renewables on an accelerated timeline, except in those countries that have to import all their fossil fuels from abroad, and even there progress is fairly slow.
The only response that makes any sense is a massive nationwide infrastructure development project designed to mitigate heat waves, wildfires, droughts, floods, extreme storms and seawater incursion.
Feedback loops and tipping points will make things to change far past what it did in the last 40 years.
The past emissions will remain in the atmosphere for at least another century (and will remain in the carbon cycle, so they will be a new stable), you will have more nature emissions (the permafrost thawing that you mentioned, more forest fires, more activity from microbes in wetlands and so on), and more things that will increase warming (like ice melting, and incoming blue ocean event, and more). And all of that, even if we stop all civilization emissions by tomorrow.
We may not survive with mild measures, you are ready to prioritize economy or even civilization over full extinction?