NDLI: Seasonal and intraseasonal variations of East Asian summer monsoon precipitation simulated by a regional air-sea coupled model

Content Provider	Springer Nature Link
Author	Fang, Yongjie Zhang, Yaocun Huang, Anning Li, Bo
Copyright Year	2013
Abstract	The performance of a regional air-sea coupled model, comprising the Regional Integrated Environment Model System (RIEMS) and the Princeton Ocean Model (POM), in simulating the seasonal and intraseasonal variations of East Asian summer monsoon (EASM) rainfall was investigated. Through comparisons of the model results among the coupled model, the uncoupled RIEMS, and observations, the impact of air-sea coupling on simulating the EASM was also evaluated. Results showed that the regional air-sea coupled climate model performed better in simulating the spatial pattern of the precipitation climatology and produced more realistic variations of the EASM rainfall in terms of its amplitude and principal EOF modes. The coupled model also showed greater skill than the uncoupled RIEMS in reproducing the principal features of climatological intraseasonal oscillation (CISO) of EASM rainfall, including its dominant period, intensity, and northward propagation. Further analysis indicated that the improvements in the simulation of the EASM rainfall climatology and its seasonal variation in the coupled model were due to better simulation of the western North Pacific Subtropical High, while the improvements of CISO simulation were owing to the realistic phase relationship between the intraseasonal convection and the underlying SST resulting from the air-sea coupling.
Starting Page	315
Ending Page	329
Page Count	15
File Format	PDF
ISSN	02561530
Journal	Advances in Atmospheric Sciences
Volume Number	30
Issue Number	2
e-ISSN	18619533
Language	English
Publisher	SP Science Press
Publisher Date	2013-02-09
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	regional air-sea coupled model East Asian summer monsoon rainfall climatological intraseasonal oscillation Meteorology/Climatology Geophysics/Geodesy
Content Type	Text
Resource Type	Article
Subject	Atmospheric Science

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