Dear all,

Members of Geo-X are invited to participate online in this hybrid event at PIK.

Dr. Kai Kornhuber, Associate Research Scientist at the Lamont-Doherty Earth Observatory at Columbia University and guest scientist at PIK, will give a talk on Wednesday, 16 November at 3.00 pm.

Extraordinary, persistent and concurrent weather extremes in present and future climates

Abstract:  Recent severe summertime weather extremes in the Northern hemisphere extratropics such as the extraordinary 2021 North American Heatwave and the record-breaking floods in central Europe were in part driven by persistent circulation patterns in the tropospheric Jetstream. To what degree such circulation patterns will modulate extreme weather risk in a warming world is still uncertain and remains a highly debated topic in climate science.
I will present results from three recent studies that investigate i. recent record breaking extreme heat in the pacific northwest (Bartusek, Kornhuber, Ting Nature Climate Change, in press) ii. future changes in weather persistence diagnosed by a feature tracking algorithm (Kornhuber & Tamarin-Brodski, GRL 2021) and iii. future risks from concurrent extremes and associated impacts on crop production based on latest GGCMI-runs (Kornhuber et al. Nature Communications, in review). A special emphasis will be placed on benchmarking the skill of CMIP5 and CMIP6 models to reproduce atmosphere dynamical mechanisms and associated extreme weather against reanalysis data.

For online participation, please contact Alison Schlums (schlums@pik-potsdam.de).

Yours sincerely,
Alison Schlums