Publication Abstracts
Ding et al. 2023
Ding, X., G. Chen, P. Zhang, D. Domeisen, and , 2023: Extreme stratospheric wave activity as harbingers of cold events over North America. Commun. Earth Environ., 4, 187, doi:10.1038/s43247-023-00845-y.
Extreme cold events over North America such as the February 2021 cold wave have been suggested to be linked to stratospheric polar vortex stretching. However, it is not resolved how robustly and on which timescales the stratosphere contributes to the surface anomalies. In contrast to the well-known surface influences of stratosphere polar vortex events that increase the intraseasonal persistence of tropospheric weather regimes, here we show that extreme stratospheric wave events are accompanied by intraseasonal fluctuations between warm and cold spells over North America in observations and climate models. Particularly, strong stratospheric wave events are followed by an increased risk of cold extremes over North America 5-25 days later. Idealized simulations in an atmospheric model with a well-resolved stratosphere corroborate that strong stratospheric wave activity precedes North American cold spells through vertical wave coupling. These findings potentially benefit the predictability of high-impact winter cold extremes over North America.
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BibTeX Citation
@article{di03200x,
author={Ding, X. and Chen, G. and Zhang, P. and Domeisen, D. and Orbe, C.},
title={Extreme stratospheric wave activity as harbingers of cold events over North America},
year={2023},
journal={Communications Earth and Environment},
volume={4},
pages={187},
doi={10.1038/s43247-023-00845-y},
}
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RIS Citation
TY - JOUR ID - di03200x AU - Ding, X. AU - Chen, G. AU - Zhang, P. AU - Domeisen, D. AU - Orbe, C. PY - 2023 TI - Extreme stratospheric wave activity as harbingers of cold events over North America JA - Commun. Earth Environ. JO - Communications Earth and Environment VL - 4 SP - 187 DO - 10.1038/s43247-023-00845-y ER -
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