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ESS-seminarium: Quantifying the contributions of two leading wintertime atmospheric circulation modes to the warm Arctic-cold Eurasia trends

Forskning
Hållbarhet & miljö
Naturvetenskap & IT

ESS-lecture by Kunhui Ye, Department of Earth Sciences, Uppsala University.

Seminarium
Datum
3 nov 2020
Tid
11:00 - 12:00
Plats
Zoom

Abstract:

In this talk, I will present an analysis of the contributions of two leading wintertime modes of atmospheric variability to the recent warm Arctic-cold Eurasia trend pattern. The two atmospheric modes, resembling a circulation pattern dominated by the North Atlantic Oscillation and a mid-high latitude Rossby wave respectively, have footprints on timescales from intraseasonal to decadal timescales. Their impacts on Arctic warming and Eurasian cooling trends are distinct from those by Arctic sea ice. Finally, I will show that these two atmospheric modes drive most (part) of the Eurasian cooling (Arctic warming) trends.

 

Biography of the speaker:

Kunhui obtained his PhD from The Chinese University of Hong Kong in 2016. He worked as a postdoc at Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research in Germany for two years before his current postdoctoral work at Uppsala University. His research focuses on climate variability and dynamics over mid-high latitudes. His most recent work includes Arctic-lower latitude teleconnection and Arctic warming.