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Climate Change Suppresses Santa Ana Winds of Southern California and Sharpens Their Seasonality
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2019
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Source: Geophysical Research Letters, 46(5), 2772-2780
[PDF-1.93 MB]
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Journal Title:Geophysical Research Letters
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Description:We downscale Santa Ana winds (SAWs) from eight global climate models (GCMs) and validate key aspects of their climatology over the historical period. We then assess SAW evolution and behavior through the 21st century, paying special attention to changes in their extreme occurrences. All GCMs project decreases in SAW activity, starting in the early 21st century, which are commensurate with decreases in the southwestward pressure gradient force that drives these winds. The trend is most pronounced in the early and late SAW season: fall and spring. It is mainly determined by changes in the frequency of SAW events, less so by changes in their intensity. The peak of the SAW season (November–December–January) is least affected by anthropogenic climate change in GCM projections.
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Source:Geophysical Research Letters, 46(5), 2772-2780
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ISSN:0094-8276;1944-8007;
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