Relative influence of oceanic and terrestrial pressure systems in driving upwelling-favorable winds

M Garcia-Reyes; William J Sydeman; B A Black; R R Rykaczewski; David S Schoeman; S A Thompson; S J Bograd

doi:10.1002/2013GL057729

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Relative influence of oceanic and terrestrial pressure systems in driving upwelling-favorable winds

Journal article

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Relative influence of oceanic and terrestrial pressure systems in driving upwelling-favorable winds

M Garcia-Reyes, William J Sydeman, B A Black, R R Rykaczewski, David S Schoeman, S A Thompson and S J Bograd

Geophysical Research Letters, Vol.40(19), pp.5311-5315

2013

DOI: https://doi.org/10.1002/2013GL057729

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Abstract

upwelling winds

subtropical highs

continental thermal low

winter upwelling

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.

Details

Title: Relative influence of oceanic and terrestrial pressure systems in driving upwelling-favorable winds
Authors: M Garcia-Reyes (Author) - Farallon Institute for Advanced Ecosystem Research, United States
William J Sydeman (Author) - Farallon Institute for Advanced Ecosystem Research, United States
B A Black (Author) - University of Texas, United States
R R Rykaczewski (Author) - University of South Carolina, United States
David S Schoeman (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
S A Thompson (Author) - Farallon Institute for Advanced Ecosystem Research, United States
S J Bograd (Author) - Environmental Research Division United States
Publication details: Geophysical Research Letters, Vol.40(19), pp.5311-5315
Publisher: Wiley-Blackwell Publishing Inc.
Date published: 2013
DOI: 10.1002/2013GL057729
ISSN: 0094-8276
Copyright note: Copyright © 2013. American Geophysical Union. All Rights Reserved.
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering
Language: English
Record Identifier: 99449069002621
Output Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Web Of Science research areas: Geosciences, Multidisciplinary

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