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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
Relative influence of oceanic and terrestrial pressure systems in driving upwelling-favorable winds
Geophysical Research Letters, Volume 40, No. 19, Year 2013
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Description
We use the 20th Century Reanalysis database to assess the influence of oceanic and terrestrial atmospheric pressure systems on winter and summer upwelling-favorable winds in Eastern Boundary Upwelling Systems. The analysis provides baseline information regarding the roles of continental thermal low (CTL) and oceanic high (OH) pressure systems in driving seasonal upwelling modes, which have high biological relevance. We show that variability in upwelling-favorable winds is dominated by OH, particularly in winter, and only weakly influenced by CTL, except at annual time scales. This is most pronounced in the California system given that the North Pacific High dominates wind variability. In contrast, CTL and OH equally influence Benguela upwelling-favorable winds during summer. This work underscores the need to understand how OH systems are likely to respond to climate change and how this might impact coastal winds that drive upwelling and productivity in these ecosystems. Key Points Variability in upwelling winds largely driven by oceanic pressure systems North Pacific High dominates winter upwelling winds in the California system Summer winds in the Benguela equally influenced by land/ocean pressure systems ©2013. American Geophysical Union. All Rights Reserved.
Authors & Co-Authors
García-Reyes, Marisol
United States, Petaluma
Farallon Institute
Sydeman, William J.
United States, Petaluma
Farallon Institute
Black, Bryan A.
United States, Austin
University of Texas System
Rykaczewski, Ryan R.
United States, Columbia
University of South Carolina
Schoeman, David S.
Australia, Sippy Downs
University of the Sunshine Coast
Thompson, Sarah Ann
United States, Petaluma
Farallon Institute
Bograd, Steven J.
United States, Washington, D.c.
National Oceanic and Atmospheric Administration
Statistics
Citations: 15
Authors: 7
Affiliations: 5
Identifiers
Doi:
10.1002/2013GL057729
ISSN:
19448007
Research Areas
Environmental