The correctness to the spuriously simulated semi-annual cycle of the sea surface temperature in the equatorial eastern Pacific
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- 作者：ZhenYa Song (1)
FangLi Qiao (1)
ChunZai Wang (2) - 关键词：SST seasonal cycle ; the eastern Pacific ; the wave ; induced mixing ; CGCMs
- 刊名：Science China Earth Sciences
- 出版年：2011
- 出版时间：March 2011
- 年：2011
- 卷：54
- 期：3
- 页码：438-444
- 全文大小：750KB
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FangLi Qiao (1)
ChunZai Wang (2)
1. The First Institute of Oceanography, State Oceanic Administration, Qingdao, 266061, China
2. NOAA Atlantic Oceanographic and Meteorological Laboratory, Miami, USA - ISSN：1869-1897
文摘
One of the challenges faced by the climate model of the Community Climate System Model version 3 (CCSM3) is the spuriously simulated semi-annual cycle of the sea surface temperature (SST) in the equatorial eastern Pacific. This model bias has limited the performance of the climate simulation and prediction. Based on the surface wave-circulation coupled theory, an atmosphere-wave-ocean coupled model was developed, which incorporates the MASNUM (key laboratory of Marine Sciences and Numerical Modeling) wave number spectral model into CCSM3. The new coupled atmosphere-wave-ocean model successfully removes the spurious semi-annual cycle simulated by the original CCSM3 and reasonably produces an SST annual cycle with warm and cold phases in April and August, respectively. The correlation between the simulated and observed SST in the equatorial eastern Pacific is improved from 0.66 to 0.93. The ocean surface layer heat budget analysis indicates that the wave-induced vertical mixing is responsible for improving the simulation of the SST seasonal cycle in the equatorial eastern Pacific.