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用逐日的欧洲中期数值预报中心再分析(ERA)风应力,和由Haney公式结合ERA海表资料与预报海温计算出的热通量强迫一个全球大洋环流模式。并用逐日的模拟结果与TOGA-COARE(Tropical Ocean-Global Atmosphere-Coupled Ocean—AtmosphereResponse Experiment)浮标观测资料对比,分析模拟结果中暖池海区上层海洋热量平衡对西风爆发(WWB)的响应。在第一次WWB过程中,模拟与观测的主要差异在WWB期间,而造成差异的原因主要是模式中由下沉运动引起的增温和由强的纬向温度梯度引起的暖平流。初步认为下沉增温可能是差分格式本身和模式分辨率不足造成的。从热量平衡的结果看,第二次WWB事件的模拟比第一次更成功,两次差异可能与两次WWB事件的季节背景不同有关。
A global ocean circulation model is forced by day-to-day ERA wind stress and by heat fluxes calculated by Haney’s formula in combination with ERA sea surface data and the SST. The daily simulation results were compared with those of the TOGA-COARE (Tropical Ocean-Global Atmosphere-Coupled Ocean-Atmosphere Response Experiment) buoy observations to analyze the response of the upper ocean heat balance in the warm pool to the westerly wind eruption (WWB). During the first WWB, the main difference between simulation and observation was during WWB, with the main reasons for the differences being warming in the model caused by sinking motion and warm advection due to strong zonal temperature gradients. It is preliminarily thought that the subsidence warming may be caused by the difference format itself and the mode resolution. From the results of the heat balance, the simulation of the second WWB event is more successful than the first one, and the difference between the two events may be related to the different seasonal backgrounds of the two WWB events.