DOI: 10.1002/2016JD025231
论文题名: Monotonic decrease of the zonal SST gradient of the equatorial Pacific as a function of CO2 concentration in CCSM3 and CCSM4
作者: Yang J. ; Peltier W.R. ; Hu Y.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2016
卷: 121, 期: 18 起始页码: 10637
结束页码: 10653
语种: 英语
英文关键词: cloud response
; greenhouse gases
; ocean dynamical adjustment
; the equatorial Pacific
; zonal SST gradient
Scopus关键词: atmosphere-ocean coupling
; atmospheric general circulation model
; carbon dioxide
; climate modeling
; cloud cover
; concentration (composition)
; environmental gradient
; greenhouse gas
; oceanic general circulation model
; sea surface temperature
; thermocline
; Pacific Ocean
; Pacific Ocean (Central)
; Pacific Ocean (Equatorial)
; Pacific Ocean (West)
英文摘要: The west-east sea surface temperature (SST) gradient in the equatorial Pacific Ocean is a key feature of Earth's climate. How this gradient responds to varying climatic forcing is a challenge to both climate theory and climate modeling. Using the coupled atmosphere-ocean general circulation models, Community Climate System Model version 3 (CCSM3) and version 4 (CCSM4), we show that the zonal SST gradient is an almost monotonically decreasing function of atmospheric CO2 concentration (pCO2) across a wide range from 17.5 to 4576 ppmv. As pCO2 is increased, the optical depth of clouds over the western and central Pacific increases significantly, reflecting more insolation back to space, suppressing surface warming in this region and thereby reducing the zonal SST gradient. Ocean adjustment to a weakening of surface zonal winds is characterized by relaxations of the equatorial thermocline tilt, zonal surface currents, and ocean upwelling. ©2016. American Geophysical Union. All Rights Reserved. 资助项目: 41025018
; 41375072
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62828
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Laboratory for Climate and Atmosphere-Ocean Studies, Department of Atmospheric and Oceanic Sciences, School of Physics, Peking UniversityBeijing, China; Department of Physics, University of Toronto, Toronto, ON, Canada
Recommended Citation:
Yang J.,Peltier W.R.,Hu Y.. Monotonic decrease of the zonal SST gradient of the equatorial Pacific as a function of CO2 concentration in CCSM3 and CCSM4[J]. Journal of Geophysical Research: Atmospheres,2016-01-01,121(18)