Regional climate impacts of the Northern Hemisphere annular mode

Thompson, David W. J. ORCID: https://orcid.org/0000-0002-5413-4376 and Wallace, John M. (2001) Regional climate impacts of the Northern Hemisphere annular mode. Science, 293 (5527). pp. 85-89. ISSN 0036-8075

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Abstract

The Northern Hemisphere annular mode (NAM) (also known as the North Atlantic Oscillation) is shown to exert a strong influence on wintertime climate, not only over the Euro-Atlantic half of the hemisphere as documented in previous studies, but over the Pacific half as well. It affects not only the mean conditions, but also the day-to-day variability, modulating the intensity of mid-latitude storms and the frequency of occurrence of high-latitude blocking and cold air outbreaks throughout the hemisphere. The recent trend in the NAM toward its high-index polarity with stronger subpolar westerlies has tended to reduce the severity of winter weather over most middle- and high-latitude Northern Hemisphere continental regions.

Item Type: Article
Uncontrolled Keywords: sdg 13 - climate action ,/dk/atira/pure/sustainabledevelopmentgoals/climate_action
Faculty \ School: Faculty of Science > School of Environmental Sciences
UEA Research Groups: Faculty of Science > Research Groups > Climatic Research Unit
Faculty of Science > Research Groups > Centre for Ocean and Atmospheric Sciences
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Depositing User: LivePure Connector
Date Deposited: 07 Jun 2022 14:30
Last Modified: 15 Jun 2023 04:33
URI: https://ueaeprints.uea.ac.uk/id/eprint/85418
DOI: 10.1126/SCIENCE.1058958

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