Lee & al.: 'We Need to Live with It': White House Message on Coronavirus—Noted
Kudlow (June 22, 2020): A Second Wave of Coronavirus Cases 'Isn't Coming'—Noted

Simon: How a ‘Heat Dome’ Forms—& Why This One Is So Perilous

The failure of the United States to adopt any strategy for dealing with the 2019 coronavirus plague does not mean that the already existing strains on our systems from global warming have gone away. Far from it. This from the smart Matt Simon on their probable negative synergies is well worth reading:

Matt Simon: How a ‘Heat Dome’ Forms—& Why This One Is So Perilous https://www.wired.com/story/how-a-heat-dome-forms/: ‘A massive, intense heat wave is settling over the continental US. The ravages of the Covid pandemic are going to make it all the more deadly.... A “heat dome” of high pressure could blast 80 percent of the continental US with temperatures over 90 degrees for the next few weeks. This coming in a summer when the Covid-19 lockdown has trapped people indoors, many without air-conditioning—and mass unemployment may mean that residents with AC units can’t afford to run them. Deeper still, the heat and the pandemic are exacerbating long-standing and deadly inequities that will only get deadlier.... Heat can accumulate over days or weeks, turning the heat dome into a kind of self-perpetuating atmospheric cap over the landscape. On a normal day, some of the sun’s energy evaporates water from the soil, meaning that solar energy isn’t put toward further warming the air. But as the heat dome persists, it blasts away the soil’s moisture, and that solar energy now goes full-tilt into heating the air. “So after a certain point, once it's been hot enough for long enough, it becomes even easier to get even hotter,” says Swain. “And so that's why these things can often be really persistent, because once they've been around for a little while, they start to feed off of themselves.” Unfortunately for the southwestern US, this is likely to unfold in the next week or two. Normally at this time of year, monsoons would be drenching the landscape, but no such storms are on the horizon. “And so those super dry land surfaces are going to amplify the heat and the persistence of this heat dome,” says Swain. The central US and mountain states will also be sweltering particularly badly over the next few weeks—heat domes tend to perpetuate inland, where they more easily dry out the surface than in wetter regions.... This won’t be the last heat dome, or the most severe one. On a warming planet, the conditions are ripe for these systems to perpetuate themselves... .#noted #2020-07-10

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