DOI: 10.1002/2015GL065948
论文题名: How did ocean warming affect Australian rainfall extremes during the 2010/2011 la Niña event?
作者: Ummenhofer C.C. ; Sen Gupta A. ; England M.H. ; Taschetto A.S. ; Briggs P.R. ; Raupach M.R.
刊名: Geophysical Research Letters
ISSN: 0094-8435
EISSN: 1944-8166
出版年: 2015
卷: 42, 期: 22 起始页码: 9942
结束页码: 9951
语种: 英语
英文关键词: attribution
; Australia
; extremes
; La Nina
; ocean warming
; precipitation
Scopus关键词: Atmospheric movements
; Carbon
; Earth atmosphere
; Flood control
; Moisture
; Nickel
; Oceanography
; Precipitation (chemical)
; Precipitation (meteorology)
; Sea level
; Soil moisture
; Attribution
; Australia
; Extremes
; La nina
; Ocean warming
; Rain
; atmospheric general circulation model
; carbon sequestration
; extreme event
; flood
; global climate
; La Nina
; moisture transfer
; precipitation (climatology)
; sea level change
; soil moisture
; spatiotemporal analysis
; thermodynamics
; warming
; Australia
英文摘要: Extreme rainfall conditions in Australia during the 2010/2011 La Niña resulted in devastating floods claiming 35 lives, causing billions of dollars in damages, and far-reaching impacts on global climate, including a significant drop in global sea level and record terrestrial carbon uptake. Northeast Australian 2010/2011 rainfall was 84% above average, unusual even for a strong La Niña, and soil moisture conditions were unprecedented since 1950. Here we demonstrate that the warmer background state increased the likelihood of the extreme rainfall response. Using atmospheric general circulation model experiments with 2010/2011 ocean conditions with and without long-term warming, we identify the mechanisms that increase the likelihood of extreme rainfall: additional ocean warming enhanced onshore moisture transport onto Australia and ascent and precipitation over the northeast. Our results highlight the role of long-term ocean warming for modifying rain-producing atmospheric circulation conditions, increasing the likelihood of extreme precipitation for Australia during future La Niña events. Key Points Surface ocean warming exacerbated Australian climate extremes in 2010/2011 Dynamic and thermodynamic atmospheric changes contributed to Australian 2010/2011 extremes Ocean warming intensifies rain-producing atmospheric circulation conditions. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84956958441&doi=10.1002%2f2015GL065948&partnerID=40&md5=3f77937e3d099384a395a5d16273760d
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8051
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 Physical Oceanography, Woods Hole Oceanographic Institution, Woods Hole, MA, United States
Recommended Citation:
Ummenhofer C.C.,Sen Gupta A.,England M.H.,et al. How did ocean warming affect Australian rainfall extremes during the 2010/2011 la Niña event?[J]. Geophysical Research Letters,2015-01-01,42(22).