The role of the Siberian high in northern hemisphere climate variability
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Author(s)
Cohen, Judah
Saito, Kazuyuki
Entekhabi, Dara
Date Issued
January 2001
Journal
Geophysical Research Letters
Publisher
American Geophysical Union (AGU)
Citation
Cohen, Judah, Kazuyuki Saito, and Dara Entekhabi. “The Role of the Siberian High in Northern Hemisphere Climate Variability.” Geophysical Research Letters 28.2 (2001): 299–302. © 2001 by the American Geophysical Union
Version
Final published version
Abstract
The dominant mode of sea level pressure (SLP) variability during the winter months in the Northern Hemisphere (NH) is characterized by a dipole with one anomaly center covering the Arctic with the opposite sign anomaly stretched across the mid-latitudes. Associated with the SLP anomaly, is a surface temperature anomaly induced by the anomalous circulation. We will show that this anomaly pattern originates in the early fall, on a much more regional scale, in Siberia. As the season progresses this anomaly pattern propagates and amplifies to dominate much of the extratropical NH, making the Siberian high a dominant force in NH climate variability in winter. Also since the SLP and surface temperature anomalies originate in a region of maximum fall snow cover variability, we argue that snow cover partially forces the phase of winter variability and can potentially be used for the skillful prediction of winter climate.
MIT Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1029/2000GL011927
