DOI: 10.1175/JCLI-D-14-00728.1
Scopus记录号: 2-s2.0-84947725967
论文题名: Stochastic atmospheric forcing as a cause of Greenland climate transitions
作者: Kleppin H. ; Jochum M. ; Otto-Bliesner B. ; Shields C.A. ; Yeager S.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期: 19 起始页码: 7741
结束页码: 7763
语种: 英语
Scopus关键词: Atmospheric movements
; Atmospheric pressure
; Atmospheric thermodynamics
; Feedback
; Ice
; Sea ice
; Sea level
; Stochastic systems
; Atmosphere-ocean interactions
; Community climate system model
; Dansgaard-Oeschger cycles
; Meridional heat transports
; Paleoclimates
; Precipitation anomalies
; Sea ice concentration
; Western Pacific Warm Pool
; Climate models
; air-sea interaction
; atmospheric forcing
; climate change
; climate modeling
; gyre
; paleoclimate
; precipitation (climatology)
; sea ice
; sea level pressure
; stochasticity
; Arctic
; Atlantic Ocean
; Greenland
; Labrador Sea
英文摘要: An unforced simulation of the Community Climate System Model, version 4 (CCSM4), is found to have Greenland warming and cooling events that resemble Dansgaard-Oeschger cycles in pattern and magnitude. With the caveat that only three transitions were available to be analyzed, it is found that the transitions are triggered by stochastic atmospheric forcing. The atmospheric anomalies change the strength of the subpolar gyre, leading to a change in Labrador Sea sea ice concentration and meridional heat transport. The changed climate state is maintained over centuries through the feedback between sea ice and sea level pressure in the North Atlantic. Indications that the initial atmospheric pressure anomalies are preceded by precipitation anomalies in the western Pacific warm pool are discussed. The full evolution of the anomalous climate state depends crucially on the climatic background state. © 2015 American Meteorological Society. 资助项目: ERC, European Research Council
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50514
Appears in Collections: 气候变化事实与影响
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作者单位: Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark; National Center for Atmospheric Research, Boulder, CO, United States
Recommended Citation:
Kleppin H.,Jochum M.,Otto-Bliesner B.,et al. Stochastic atmospheric forcing as a cause of Greenland climate transitions[J]. Journal of Climate,2015-01-01,28(19)