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Conference Paper

Application of a hemispheric index for severe winter weather to understanding the relationship of Arctic warmth and extreme winter weather

Authors

Cohen,  Judah
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Francis,  Jennifer
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Pfeiffer,  Karl
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

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Citation

Cohen, J., Francis, J., Pfeiffer, K. (2023): Application of a hemispheric index for severe winter weather to understanding the relationship of Arctic warmth and extreme winter weather, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-0190


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5016290
Abstract
We extended a recently developed index of accumulated severe winter weather for stations in the United States only to the entire Northern Hemisphere. Utilizing this index of severe winter weather, we explore the relationship of Arctic temperatures and geopotential heights with the probability of severe winter weather across the mid-latitudes. This index shows a direct and linear relationship between Arctic temperatures and severe winter weather across the mid-latitudes. We also explore trends and identify those regions where the Arctic warming trend could be contributing to an increase in severe winter weather which is superimposed on the overall global warming trend. Besides focusing on pan-Arctic trends we also identify the relationship between regional Arctic temperatures with more regionalized severe winter weather. We also analyze the relationship between polar vortex variability and the occurrence of severe winter weather in Europe, Asia and North America.