The correctness to the spuriously simulated semi-annual cycle of the sea surface temperature in the equatorial eastern Pacific
The correctness to the spuriously simulated semi-annual cycle of the sea surface temperature in the equatorial eastern Pacific
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DOI：
10.1007/s11430-011-4176-3
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发表时间：
2011-02
期刊：
影响因子：
--
通讯作者：
Zhenya Song;F. Qiao;Chunzai Wang
中科院分区：
文献类型：
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作者：
Zhenya Song;F. Qiao;Chunzai Wang
共同体气候系统模式第3版(CCSM3)的气候模式所面临的挑战之一是错误地模拟了赤道东太平洋海表面温度(SST)的半年周期。这种模型偏差限制了气候模拟和预测的性能。基于表面波-环流耦合理论，将海洋科学与数值模拟重点实验室(MASNUM)的波数谱模式引入CCSM3，建立了一个海-气-波-海耦合模式。新的大气-海浪-海洋耦合模式成功地去除了原CCSM3模式模拟的虚假的半年周期，并合理地产生了4月和8月海温分别为暖和冷的年周期。赤道东太平洋海温模拟值与实测值的相关系数由0.66提高到0.93。海洋表层热量收支分析表明，波浪引起的垂直混合对赤道东太平洋海温季节循环的模拟有较大的改善作用。
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.