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DOI: 10.1002/2015GL063428
论文题名:
Seasonal reversal of the influence of El Niño-Southern Oscillation on very large wildfire occurrence in the interior northwestern United States
作者: Barbero R.; Abatzoglou J.T.; Brown T.J.
刊名: Geophysical Research Letters
ISSN: 0094-9458
EISSN: 1944-9189
出版年: 2015
卷: 42, 期:9
起始页码: 3538
结束页码: 3545
语种: 英语
英文关键词: climate-fire relationship ; ENSO ; very large wildfire ; western US
Scopus关键词: Atmospheric pressure ; Fires ; Nickel ; Climate-fire relationship ; ENSO ; Integrated water vapors ; Northwestern United States ; Southern oscillation ; Southern oscillation index ; Very large wildfire ; Western US ; Climatology ; El Nino-Southern Oscillation ; moisture content ; precipitation (climatology) ; satellite imagery ; seasonal variation ; water vapor ; wildfire ; United States
英文摘要: Satellite-mapped fire perimeters and the multivariate El Niño-Southern Oscillation index were used to examine the impact of concurrent El Niño-Southern Oscillation (ENSO) phase on very large fire (VLF) occurrences over the intermountain northwestern United States (U.S.) from 1984 to 2012. While the warm phase of ENSO promotes drier and warmer than normal conditions across the region during winter and spring that favor widespread fire activity the following summer, a reduction in VLFs was found during the warm phase of ENSO during summer concurrent with the fire season. This paradox is primarily tied to an anomalous upper level trough over the western U.S. and positive anomalies in integrated water vapor that extend over the northwestern U.S. during summers when the warm phase of ENSO is present. Collectively, these features result in widespread increases in precipitation amount during the summer and a curtailment of periods of critically low-fuel moistures that can carry wildfire. Key Points Warm ENSO summers limit the occurrence of very large wildfires Increased summer precipitation during warm ENSO over interior northwest US Summer ENSO-precipitation relationships strengthened in recent decades ©2015. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84930473459&doi=10.1002%2f2015GL063428&partnerID=40&md5=f437655e3bc344455d04f3f913564124
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9073
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: Department of Geography, University of Idaho, Moscow, ID, United States

Recommended Citation:
Barbero R.,Abatzoglou J.T.,Brown T.J.. Seasonal reversal of the influence of El Niño-Southern Oscillation on very large wildfire occurrence in the interior northwestern United States[J]. Geophysical Research Letters,2015-01-01,42(9).
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