DOI: 10.1007/s00382-014-2465-1
Scopus记录号: 2-s2.0-84943816314
论文题名: Asymmetric impact of the physiological effect of carbon dioxide on hydrological responses to instantaneous negative and positive CO2 forcing
作者: Abe M. ; Shiogama H. ; Yokohata T. ; Emori S. ; Nozawa T.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2015
卷: 45, 期: 2017-07-08 起始页码: 2181
结束页码: 2192
语种: 英语
英文关键词: Carbon dioxide forcing
; Carbon dioxide physiological effect
; General circulation model
; Hydrological response
; Land surface model
英文摘要: We conducted sensitivity experiments using a coupled atmosphere–ocean general circulation model to examine the asymmetry between the hydrological responses to instantaneous positive and negative CO2 forcing and the impact of the CO2 physiological effects (CDPEs) on these responses. This study focuses on the fast response occurring on time scales shorter than 1 year after imposing CO2 forcing. Experiments investigating the CO2 physiological effect show that the fast response of precipitation to positive CO2 forcing is a decrease in the global and annual mean, whereas that of negative forcing is an increase the global and annual mean precipitation. The fast global precipitation response to negative forcing is stronger than the response to positive forcing. In contrast, the experiments without the CDPE reveal similar magnitudes of the fast global precipitation responses to negative and positive CO2 forcing. Significant differences in the magnitudes of the fast precipitation response due to the CDPE are found in tropical regions such as the Amazon Basin, the Maritime Continents, and tropical Africa, where C3-type plants are common. The stomatal conductance of plant leaves is decreased by both positive and negative CO2 forcing, which suppress the transpiration from the leaves. Consequently, the CDPE enhances the asymmetry of the fast precipitation responses to positive and negative CO2 forcing. The asymmetric impact of CDPE requires a careful evaluation of future hydrological changes which is constrained by paleoclimate evidence. © 2015, Springer-Verlag Berlin Heidelberg. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53979
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Integrated Climate Change Prediction Research, Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan; Center for Global Environmental Research, National Institute for Environmental Studies, Tsukuba, Japan; Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan
Recommended Citation:
Abe M.,Shiogama H.,Yokohata T.,et al. Asymmetric impact of the physiological effect of carbon dioxide on hydrological responses to instantaneous negative and positive CO2 forcing[J]. Climate Dynamics,2015-01-01,45(2017-07-08)