globalchange  > 气候减缓与适应
DOI: 10.1175/JCLI-D-17-0254.1
Scopus记录号: 2-s2.0-85040597238
论文题名:
Greater temperature and precipitation extremes intensify Western U.S. droughts, wildfire severity, and sierra Nevada tree mortality
作者: Crockett J.L.; Leroy Westerling A.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期:1
起始页码: 341
结束页码: 354
语种: 英语
英文关键词: Drought ; Ecosystem effects ; Forest fires ; North America ; Temperature ; Water budget
Scopus关键词: Budget control ; Deforestation ; Fire protection ; Fires ; Forestry ; Temperature ; Climate simulation ; Ecosystem effects ; Forest fires ; North America ; Precipitation extremes ; Spatiotemporal evolution ; Water budget ; Western United States ; Drought ; air temperature ; drought ; ecosystem response ; extreme event ; forest fire ; mortality ; precipitation (climatology) ; tree ; water budget ; wildfire ; California ; Sierra Nevada [California] ; United States
英文摘要: Extensive drought in the western United States (WUS) during the twenty-first century and associated wildfire and tree mortality incidence has highlighted the potential for greater area of severity within widespread droughts. To place recent WUS droughts into a historical context, the authors analyzed gridded daily climate (temperature, precipitation, and climatic water deficit) data to identify and characterize the spatiotemporal evolution of the largest WUS droughts of the last 100 years, with an emphasis on severe cores within drought extents. Cores of droughts during the last 15 years (2000-02 and 2012-14) covered a greater area than in earlier droughts, driven by greater temperature and precipitation extremes. Comparing fire extent and severity before, during, and after drought events using the monitoring trends in burn severity dataset (1984-2014), the authors found fire size and high-severity burn extent were greater during droughts than before or after. Similarly, recent Sierra Nevada forest mortality was greatest in cores immediately after the drought. Climate simulations anticipate greater extremes in temperature and precipitation in a warming world; droughts and related impacts of the last 15 years may presage the effects of these extremes. © 2018 American Meteorological Society.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111742
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作者单位: University of California, Merced, Merced, CA, United States

Recommended Citation:
Crockett J.L.,Leroy Westerling A.. Greater temperature and precipitation extremes intensify Western U.S. droughts, wildfire severity, and sierra Nevada tree mortality[J]. Journal of Climate,2018-01-01,31(1)
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