DOI: 10.1002/2015JD023364
论文题名: Sensitivity of radiative forcing, ocean heat uptake, and climate feedback to changes in anthropogenic greenhouse gases and aerosols
作者: Paynter D. ; Frölicher T.L.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2015
卷: 120, 期: 19 起始页码: 9837
结束页码: 9854
语种: 英语
英文关键词: climate feedback of greenhouse gases and aerosol
; regional climate feedback
; time-varying climate feedback
; twentieth century energy budget response to the greenhouse gases and aerosol
Scopus关键词: aerosol
; air temperature
; anthropogenic effect
; carbon dioxide
; climate feedback
; climate modeling
; energy budget
; greenhouse gas
; heat flow
; radiative forcing
; regional climate
; sea surface temperature
; sensitivity analysis
; top of atmosphere
; twentieth century
英文摘要: We use both prescribed sea surface temperature and fully coupled versions of the Geophysical Fluid Dynamics Laboratory coupled climate model (CM3) to analyze the sensitivity of radiative forcing, ocean heat uptake, and climate feedback to changes in anthropogenic greenhouse gases and aerosols considered separately over the 1870 to 2005 period. The global anthropogenic aerosol climate feedback parameter (- α) of -1.13 ± 0.33 Wm-2 K-1 is indistinguishable from the greenhouse gas - α of -1.28 ± 0.23 Wm-2 K-1. However, this greenhouse gas climate feedback parameter is about 50% larger than that obtained for CM3 from a widely used linear extrapolation method of regressing Earth's top of atmosphere imbalance against surface air temperature change in idealized CO2 radiative forcing experiments. This implies that the global mean surface temperature change due to forcing over the 1870-2005 period is 50% smaller than that predicted using the climate feedback parameter obtained from idealized experiments. This difference results from time dependence in α, which makes the radiative forcing obtained by the fixed sea surface temperature method incompatible with that obtained by the linear extrapolation method fitted over the first 150 years after CO2 is quadrupled. On a regional scale, α varies greatly between the greenhouse gas and aerosol case. This suggests that the relationship between transient and equilibrium climate sensitivities obtained from idealized CO2 simulations, using techniques such as regional feedback analysis and heat uptake efficacy, may not hold for other forcing scenarios. ©2015. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62988
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: Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States; Environmental Physics, Institute of Biogeochemistry and Pollutant Dynamics, ETH Zürich, Zürich, Switzerland
Recommended Citation:
Paynter D.,Frölicher T.L.. Sensitivity of radiative forcing, ocean heat uptake, and climate feedback to changes in anthropogenic greenhouse gases and aerosols[J]. Journal of Geophysical Research: Atmospheres,2015-01-01,120(19)