Daniel Swain gets to explain "hydrological whiplash", a #climatechange feature proudly brought to you by the Fossil Fuels abd related industries and their purchased political brokers
https://www.latimes.com/environment/story/2025-01-09/climate-whiplash-study-california-fires
This whiplash also occurred in Southern California and laid the ground for #LAfires :
the 2 wettest years on record locally - with atmospheric rivers and flooding - let grass and brush grow tremendously.
All this unusual amount of biomass became tinder in the 2nd phase of the hydrological whiplash: the hottest summer on record locally, with a thirsty atmosphere that stole all the water it could from soil and plants. These perfect fire conditions got exasperated by a climatechange-induced prolonged fire season, abnormally low=0 rainfall locally since October, and the bone dry #SantaAna wind phenomenon now in January.
One spark from anywhere - whoosh!
In his 2 YT live streams yesterday, Daniel explained all this too. He also showed nighttime footage from a burning suburb where he highlighted another feature of this larger-than-normal fuel load paired with strong wind. Billions of glowing ambers swirling thru the air and on the ground. They look like snowflakes in a blzzard!
And they're tiny. They sail long distance on the wind. And find their way into buildings via small cracks or holes in the shell and there, undisturbed by wind, they settle down and burn houses from within.
He is among my most favorite if not the most favorite cli-sci_doing_scicomm. His YT live sessions are calm but engaging, well structured, multi-media, and his eloquence without any of the usual "Ehm, ah, " or meandering and so on. And he has an unusual holistic approach to climate stuff, combined with empathy. Both make him point out important, interesting things you never hear from physics-focussed #scicomm. Guess, I'm a fan

Oh, and he has a paper out today on that very hydrological whiplash, here with a global perspective
https://www.nature.com/articles/s43017-024-00624-z