DOI: 10.1002/2016GL068172
论文题名: Observed and projected decrease in Northern Hemisphere extratropical cyclone activity in summer and its impacts on maximum temperature
作者: Chang E.K.M. ; Ma C.-G. ; Zheng C. ; Yau A.M.W.
刊名: Geophysical Research Letters
ISSN: 0094-9285
EISSN: 1944-9016
出版年: 2016
卷: 43, 期: 5 起始页码: 2200
结束页码: 2208
语种: 英语
英文关键词: climate change
; extratropical cyclones
; maximum temperature
; model bias
Scopus关键词: Climate models
; Greenhouse gases
; Storms
; Cyclone activity
; Extratropical cyclones
; High impact
; High Latitudes
; Maximum temperature
; Midlatitudes
; Model bias
; Northern Hemispheres
; Climate change
英文摘要: Extratropical cyclones cause much of the high-impact weather over the midlatitudes. With increasing greenhouse gases, enhanced high-latitude warming will lead to weaker cyclone activity. Here we show that between 1979 and 2014, the number of strong cyclones in Northern Hemisphere in summer has decreased at a rate of 4% per decade, with even larger decrease found near northeastern North America. Climate models project a decrease in summer cyclone activity, but the observed decreasing rate is near the fastest projected. Decrease in summer cyclone activity will lead to decrease in cloud cover, giving rise to higher maximum temperature, potentially enhancing the increase in maximum temperature by 0.5 K or more over some regions. We also show that climate models may have biases in simulating the positive relationship between cyclone activity and cloud cover, potentially underestimating the impacts of cyclone decrease on accentuating the future increase in maximum temperature. © 2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84960365132&doi=10.1002%2f2016GL068172&partnerID=40&md5=83a2c939324b2024e3a2c05b1067fd93
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10248
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: School of Marine and Atmospheric Sciences, Stony Brook University, New York, United States
Recommended Citation:
Chang E.K.M.,Ma C.-G.,Zheng C.,et al. Observed and projected decrease in Northern Hemisphere extratropical cyclone activity in summer and its impacts on maximum temperature[J]. Geophysical Research Letters,2016-01-01,43(5).