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- Title
The correctness to the spuriously simulated semi-annual cycle of the sea surface temperature in the equatorial eastern Pacific.
- Authors
Song, ZhenYa; Qiao, FangLi; Wang, ChunZai
- Abstract
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.
- Publication
SCIENCE CHINA Earth Sciences, 2011, Vol 54, Issue 3, p438
- ISSN
1674-7313
- Publication type
Article
- DOI
10.1007/s11430-011-4176-3