DOI: 10.1002/2016GL068406
论文题名: Variation in climate sensitivity and feedback parameters during the historical period
作者: Gregory J.M. ; Andrews T.
刊名: Geophysical Research Letters
ISSN: 0094-9071
EISSN: 1944-8802
出版年: 2016
卷: 43, 期: 8 起始页码: 3911
结束页码: 3920
语种: 英语
英文关键词: AGCM
; AMIP
; climate feedback
; climate sensitivity
; climate variability
; radiative forcing
Scopus关键词: Atmospheric composition
; Atmospheric radiation
; Atmospheric temperature
; Carbon dioxide
; Climate models
; Oceanography
; Sea ice
; Sensitivity analysis
; Surface waters
; AGCM
; AMIP
; Climate feedbacks
; Climate sensitivity
; Climate variability
; Radiative forcings
; Climate change
英文摘要: We investigate the climate feedback parameter α (W m-2 K-1) during the historical period (since 1871) in experiments using the HadGEM2 and HadCM3 atmosphere general circulation models (AGCMs) with constant preindustrial atmospheric composition and time-dependent observational sea surface temperature (SST) and sea ice boundary conditions. In both AGCMs, for the historical period as a whole, the effective climate sensitivity is ∼2 K (α≃1.7 W m-2 K-1), and α shows substantial decadal variation caused by the patterns of SST change. Both models agree with the AGCMs of the latest Coupled Model Intercomparison Project in showing a considerably smaller effective climate sensitivity of ∼1.5 K (α = 2.3 ± 0.7 W m-2 K-1), given the time-dependent changes in sea surface conditions observed during 1979-2008, than the corresponding coupled atmosphere-ocean general circulation models (AOGCMs) give under constant quadrupled CO2 concentration. These findings help to relieve the apparent contradiction between the larger values of effective climate sensitivity diagnosed from AOGCMs and the smaller values inferred from historical climate change. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84968830865&doi=10.1002%2f2016GL068406&partnerID=40&md5=24fcc2549fbf370057f5864e11e82446
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10034
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: NCAS-Climate, University of Reading, Reading, United Kingdom
Recommended Citation:
Gregory J.M.,Andrews T.. Variation in climate sensitivity and feedback parameters during the historical period[J]. Geophysical Research Letters,2016-01-01,43(8).