Institut für Meteorologie und Klimaforschung

Veranstaltungskalender

 
Kolloquium

Drivers and Subseasonal Predictability of Cold Air Outbreaks in the Central United States

Mittwoch, 15. Mai 2024, 16:00-17:00
CN, Building 435, Seminarroom 2.05

Even in a warming world, extreme winter weather events like cold air outbreaks still occur and have high socioeconomic costs, but they remain a challenge to forecast skillfully in the subseasonal-to-seasonal timeframe (i.e., 2-8 weeks). In this talk, I will discuss recent work by the Applied Climate Dynamics Group at the University of Oklahoma to improve our dynamical understanding of the evolution of cold air outbreaks in the central United States and then use this knowledge to improve skill in subseasonal predictions of those events. We use a combination of observations and numerical modeling experiments to show why we should care about intraseasonal variability in the stratosphere to improve our forecast skill, including considering different types of stratosphere-troposphere coupling outside of the “classical” paradigm. Additionally, we will highlight particular precursor flow patterns in the upper troposphere (so-called blocking patterns) which were key for skillful 3+ week forecasts of the February 2021 North American Cold Air Outbreak and could be exploited for long-lead predictions of future cold air outbreaks.

Referent/in
Jason Furtado

University of Oklahioma
Veranstalter
IMK-TRO
Institute of Meteorology and Climate Research
KIT
Wolfgang-Gaede-Str. 1
76131 Karlsruhe
Tel: 0721 608 43356
E-Mail: imk-tro does-not-exist.kit edu
https://www.imk-tro.kit.edu
Servicemenü

Hinweise

"CS" - KIT-Campus Süd (Universität), Gebäude 30.23 (Physikhochhaus), Seminarraum 13/2

"CN" - KIT-Campus Nord (Forschungszentrum), Gebäude 435 (IMK), Raum 2.05

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