Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018GL080261 |
Climate Change Suppresses Santa Ana Winds of Southern California and Sharpens Their Seasonality | |
Guzman-Morales, Janin; Gershunov, Alexander | |
2019-03-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:5页码:2772-2780 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | 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. Plain Language Summary Dry and gusty Santa Ana winds (SAWs) drive the most catastrophic wildfires in Southern California. Their sensitivity to the changing climate has been a matter of uncertainty and debate. We have assessed the response of SAW activity to global warming and describe these results in detail here. The overall decrease in SAW activity robustly projected by downscaled global climate models is strongest in the early and late seasons-fall and spring. SAWs are expected to decrease least at the peak of their season approximately December. Importantly, decreased SAW activity in the future climate is driven mainly by decreased frequency rather than the peak intensity of these winds. These results, together with what we know from recent literature about how precipitation is projected to change in this region, suggest a later wildfire season in the future. |
英文关键词 | Santa Ana winds Santa Ana winds future projections Santa Ana winds seasonality change |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000462612900049 |
WOS关键词 | 10 KM CARD10 ; UNITED-STATES ; TEMPERATURE ; VARIABILITY ; REANALYSIS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/181639 |
专题 | 气候变化 |
作者单位 | Univ Calif San Diego, Climate Atmospher Sci & Phys Oceanog CASPO Res Di, Scripps Inst Oceanog, San Diego, CA 92103 USA |
推荐引用方式 GB/T 7714 | Guzman-Morales, Janin,Gershunov, Alexander. Climate Change Suppresses Santa Ana Winds of Southern California and Sharpens Their Seasonality[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(5):2772-2780. |
APA | Guzman-Morales, Janin,&Gershunov, Alexander.(2019).Climate Change Suppresses Santa Ana Winds of Southern California and Sharpens Their Seasonality.GEOPHYSICAL RESEARCH LETTERS,46(5),2772-2780. |
MLA | Guzman-Morales, Janin,et al."Climate Change Suppresses Santa Ana Winds of Southern California and Sharpens Their Seasonality".GEOPHYSICAL RESEARCH LETTERS 46.5(2019):2772-2780. |
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