DOI: 10.1002/2013GL056755
论文题名: Fast atmosphere-ocean model runs with large changes in CO2
作者: Russell G.L. ; Lacis A.A. ; Rind D.H. ; Colose C. ; Opstbaum R.F.
刊名: Geophysical Research Letters
ISSN: 0094-8393
EISSN: 1944-8124
出版年: 2013
卷: 40, 期: 21 起始页码: 5787
结束页码: 5792
语种: 英语
英文关键词: climate sensitivity
; CO2
Scopus关键词: Atmosphere-ocean modeling
; Climate sensitivity
; Cloud top heights
; Global mean surface temperature
; Low-level cloud covers
; Radiative forcings
; Water vapor feedbacks
; Water-vapor absorption
; Atmospheric radiation
; Atmospheric temperature
; Atmospheric thermodynamics
; Earth (planet)
; Sea ice
; Water vapor
; Carbon dioxide
; absorption
; air-sea interaction
; atmospheric forcing
; carbon dioxide
; cloud cover
; ice cover
; numerical model
; sensitivity analysis
; stabilization
; surface temperature
; water vapor
英文摘要: How does climate sensitivity vary with the magnitude of climate forcing? This question was investigated with the use of a modified coupled atmosphere-ocean model, whose stability was improved so that the model would accommodate large radiative forcings yet be fast enough to reach rapid equilibrium. Experiments were performed in which atmospheric CO2 was multiplied by powers of 2, from 1/64 to 256 times the 1950 value. From 8 to 32 times, the 1950 CO2, climate sensitivity for doubling CO2 reaches 8°C due to increases in water vapor absorption and cloud top height and to reductions in low level cloud cover. As CO2 amount increases further, sensitivity drops as cloud cover and planetary albedo stabilize. No water vapor-induced runaway greenhouse caused by increased CO2 was found for the range of CO2 examined. With CO2 at or below 1/8 of the 1950 value, runaway sea ice does occur as the planet cascades to a snowball Earth climate with fully ice covered oceans and global mean surface temperatures near -30°C. Key Points Atmospheric CO2 controls the Earth's climate Water vapor feedback magnifies the greenhouse effect Climate sensitivity is presently at a local minimum ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84887283259&doi=10.1002%2f2013GL056755&partnerID=40&md5=112b39ea16f1096cd64e01277776d5d1
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5657
Appears in Collections: 气候减缓与适应
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作者单位: NASA Goddard Institute for Space Studies, 2880 Broadway, New York, NY 10025, United States
Recommended Citation:
Russell G.L.,Lacis A.A.,Rind D.H.,et al. Fast atmosphere-ocean model runs with large changes in CO2[J]. Geophysical Research Letters,2013-01-01,40(21).