DOI: 10.1175/JCLI-D-11-00475.1
Scopus记录号: 2-s2.0-84869757788
论文题名: Atmosphere response time scales estimated from AOGCM experiments
作者: Olivie D.J.L. ; Peters G.P. ; Saint-Martin D.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期: 22 起始页码: 7956
结束页码: 7972
语种: 英语
Scopus关键词: Atmosphere ocean general circulation models
; Characteristic time
; Climate sensitivity
; Climate system
; Forcings
; Radiative forcings
; Slow mode
; Surface air temperatures
; Time-scales
; Atmospheric radiation
; Carbon dioxide
; Climate change
; Climate models
; Estimation
; Factor analysis
; Time measurement
; Uncertainty analysis
; air temperature
; carbon dioxide
; climate change
; climate modeling
; general circulation model
; radiative forcing
; sensitivity analysis
英文摘要: The global-mean surface air temperature response of the climate system to a specific radiative forcing shows characteristic time scales. Identifying these time scales and their corresponding amplitudes (climate sensitivity) allows one to approximate the response to arbitrary radiative forcings. The authors estimate these time scales for a set of atmosphere-ocean general circulation models (AOGCMs) based on relatively short integrations of 100-300 yr for some idealized forcings. Two modes can be clearly distinguished but a large spread in time scales and climate sensitivities exists among the AOGCMs. The analysis herein also shows that different factors influence the mode estimates. The value and uncertainty of the smallest time scale estimate is significantly lower when based on step scenarios than gradual scenarios; the uncertainty on the climate sensitivity of the slow mode can only be reduced significantly by performing longer AOGCM simulations; and scenarios with only a monotonically increasing forcing do not easily permit the climate sensitivity and the response time for the slow mode to be disentangled. Finally, climate sensitivities can be estimated more accurately than response times. © 2012 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52167
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Center for International Climate and Environmental Research-Oslo, Oslo, Norway; University of Oslo, Oslo, Norway; Centre National de Recherches Météorologiques, Météo-France, Toulouse, France
Recommended Citation:
Olivie D.J.L.,Peters G.P.,Saint-Martin D.. Atmosphere response time scales estimated from AOGCM experiments[J]. Journal of Climate,2012-01-01,25(22)