On overestimation of tropical precipitation by an atmospheric GCM with prescribed SST

被引:41
作者
Kitoh, A
Arakawa, O
机构
[1] Meteorol Res Inst, Tsukuba, Ibaraki 3050052, Japan
[2] Univ Tsukuba, Inst Geosci, Tsukuba, Ibaraki 3058521, Japan
关键词
D O I
10.1029/1999GL900616
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
We investigate how an atmospheric general circulation model (AGCM) can reproduce atmospheric aspects of climate, when the boundary conditions are prescribed. The AGCM is integrated with sea surface temperature (SST) specified from an integration of a coupled general circulation model (CGCM). A systematic difference in the mean climate is found between the AGCM and the CGCM in the tropical Pacific. This difference is apparent when and where local SST is warmest. In the CGCM, precipitation does not last long due to SST and cloud-radiation feedback. Precipitation in the AGCM, however, tends to persist longer. Results of this experiment imply that caution is needed when using an AGCM with boundary conditions derived from a CGCM for climate change studies.
引用
收藏
页码:2965 / 2968
页数:4
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