Posts

Showing posts with the label jet stream

Seventy-two Hours Under the Heat Dome

https://www.newyorker.com/magazine/2021/10/18/seventy-two-hours-under-the-heat-dome By  James Ross Gardner , The New Yorker.  Excerpt: A chronicle of a slow-motion climate disaster that became one of Oregon’s deadliest calamities. …Typhoon Champi caused no serious damage and no loss of human life. But a number of atmospheric scientists believe that it may be what gave the jet stream a snap. After the storm diminished, its force continued on, crimping the jet stream into a sharply curved band, or what meteorologists refer to as an omega block, because it resembles the Greek letter. This led to what’s called, colloquially, a heat dome, a high-pressure system in which hot air is trapped over a single geographic area. It stalled over British Columbia, Washington, and Oregon, sealing in the heat. ...In the course of the heat wave, the cooling shelters hosted fourteen hundred people overnight. At its peak, the convention center housed three hundred and eighty-five in a single night...

‘Godzilla’ dust storm traced to shaky northern jet stream

https://www.sciencemag.org/news/2020/12/godzilla-dust-storm-traced-shaky-northern-jet-stream Source:  By  Warren Cornwall , Science Magazine.  Excerpt: In June, residents of Puerto Rico woke to a Sun shrouded in a thick haze, and everything outside seemingly coated in reddish dust. Little did they know the phenomenon was connected to winds swept up by the largest African dust storm on record—an event so massive, scientists have dubbed it Godzilla. These winds, researchers now report, were in turn triggered by a meandering jet stream that circles the planet farther north. The new findings identify yet another way in which a warming Arctic might disturb the weather half a world away. The root cause of the extra-wavy jet stream is under fierce debate, but some scientists believe Arctic warming and declining sea ice are to blame for Godzilla’s far-reaching effects. “Arguably there is at least an indirect connection between climate change and this notable dust storm,” says ...