Prof. Stefan RahmstorfApr 28, 2023
The current record heat in Portugal and Spain is linked to hot air coming from the south-west, which is linked to a wave in the jetstream (blue). It goes anti-clockwise around a low pressure over the Atlantic, sitting above the cold patch in the North Atlantic sea surface. 1/x
Show threadProf. Stefan RahmstorfApr 28, 2023
Figures: https://climatereanalyzer.org/wx/todays-weather/?var_id=sstanom&ortho=1&wt=1
Apart from general global warming, there may be some interesting connections to dynamic climate changes here. For one, the jet going around this way is favored by the cold blob, as shown by Duchez et al. 2016. 2/x https://climatereanalyzer.org/wx/todays-weather/?var_id=sstanom&ortho=1&wt=1
Climate Reanalyzer

Show threadProf. Stefan RahmstorfApr 28, 2023
That cold blob in turn is enhanced by climate change weakening the Atlantic Meridional Overturning Circulation (AMOC) as explained e.g. in this blog. https://www.realclimate.org/index.php/archives/2020/09/new-studies-confirm-weakening-of-the-gulf-stream-circulation-amoc/ 3/x
RealClimate: New studies confirm weakening of the Gulf Stream circulation (AMOC)

RealClimate: Many of the earlier predictions of climate research have now become reality. The world is getting warmer, sea levels are rising faster and faster, and more frequent heat waves, extreme rainfall, devastating wildfires and more severe tropical storms are affecting many millions of people. Now there is growing evidence that another climate forecast is already

RealClimate | Climate science from climate scientists...
Show threadNicole Parsons

@rahmstorf

Is my understanding correct?

Climate change ->
melted polar ice ->
desalination of oceans ->
sea currents stalling & stuttering OR going into accelerated overdrive ->

heat dome / drought
hurricane
atmospheric river
polar vortex
windstorms
Ice storms
blizzards

May 1, 2023 at 1:18amWeb