热带太平洋海温年际变化对海表风应力的响应及其敏感性试验

在GFDL海洋模式的基础上发展了一个高分辨率的太平洋环流模式，模式较好地模拟出太平洋上层海温的气候状态及其季节和年际变化的主要特征。用观测的1985～1995年海表风应力去强迫模式，清楚地模拟出相应的暖事件和冷事件。敏感性试验揭示，日界线附近持续的西风距平愈强，赤道中、东太平洋增暖愈大，其影响向东传播扩展，5个月左右可达太平洋东岸，传播速度与西风应力距平强度关系不大。

The Response of Sea Temperature Interannual Variations to Sea Surface Wind Stress and Its Sensitivity Experiment

A Pacific general circulation model with higher resolution has been developed based on GFDL ocean model. Using this model the main characteristics on climate state, seasonal and interannual variations of Pacific upper sea temperature have been reproduced. Forcing the model with observed wind stresses from 1985 to 1995, the associated warm and cold events are simulated clearly. The sensitivity experiment reveals that the larger the successive westerly anomaly near the date line is, the more the warming in the central and eastern equatorial Pacific is. Its influences propagate and extend eastward and can reach the east coast of the Pacific in 5 months. The propagation speed doesn’t depend on the intensity of westerly stress anomaly.