DOI: 10.1007/s00382-015-2552-y
Scopus记录号: 2-s2.0-84947491982
论文题名: Land-sea warming contrast: the role of the horizontal energy transport
作者: Geoffroy O. ; Saint-Martin D. ; Voldoire A.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2015
卷: 45, 期: 2017-11-12 起始页码: 3493
结束页码: 3511
语种: 英语
英文关键词: Climate sensitivity
; Energy balance model
; Forcing adjustment
; Horizontal energy transport
; Intermodel spread
; Land-sea contrast
; Radiative feedbacks
英文摘要: In this study we investigate the role of the mechanisms at play in the magnitude of the land-sea warming contrast and its intermodel spread in the fifth coupled models intercomparison project (CMIP5) simulations. In this aim, an energy-balance model (EBM), with one box representing the land area and two other boxes the near-surface and the deep ocean, is developed. In particular, a simple parameterization of the horizontal energy transport (HET) change between these two regions is proposed. The EBM is shown to capture the variation of the land and the ocean temperature responses and of the land-sea warming ratio in different idealized climate change experiments. By using this framework, we first show that the land-sea warming contrast is explained by the asymmetry in the strength of the HET between the land and ocean and not by land-sea differences in radiative feedbacks. Then we use a method of analysis of variance to infer the contributors to the intermodel spread in the land-sea warming ratio of climate models participating to CMIP5. The main contributor is found to be the HET with a contribution of about 70 %. Finally, our results suggest that the asymmetric character of the HET dependency to the land and the ocean temperature responses may be primarily explained by the land-sea differences in surface specific humidity change for a given temperature change. © 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/53913
Appears in Collections: 过去全球变化的重建
There are no files associated with this item.
作者单位: CNRM/GAME, Météo-France/CNRS, 42 av. G. Coriolis, Toulouse, France
Recommended Citation:
Geoffroy O.,Saint-Martin D.,Voldoire A.. Land-sea warming contrast: the role of the horizontal energy transport[J]. Climate Dynamics,2015-01-01,45(2017-11-12)