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根据含中层冷水海洋垂直热结构的特征 ,将其分为 4层 ,并考虑来自海面的热力和动力强迫因子、水层界面剪切应力和卷挟热交换、热平流、混合及地形影响等条件下 ,从原始动量、连续方程组及热传导方程出发 ,对整个海洋和各水层分别进行垂向积分 ,导出相应的描述风生界面起伏、各水层平均流场和温度场的闭合方程组 .当解得各水层的平均温度场Tk(k =1 ,2 ,3 ,4)后 ,根据Tk 与对应水层界面特征温度间的关系获得后者 ,最后通过水温剖面表达式获得含中层冷水海洋的三维热结构 .为了检验本模式的功能 ,以时效为 5d试报了 5月 1 5日研究海域的三维热结构 ,并将试报结果与实测值进行了比较 .结果表明 ,试报水温的均绝误差为 0 2 5℃ ,效果令人满意 .
According to the characteristics of the vertical thermal structure of the middle-level cold water ocean, it is divided into 4 layers, taking into account the thermal and dynamic forcing factors from the sea surface, the shear stress of the water layer interface and the heat exchange with the entrapment, advection, mixing and terrain effects Based on the original momentum, the continuous equations and the heat conduction equation, the entire ocean and each aquifer are vertically integrated, and the closed equations describing the wind-induced interface fluctuation, the average flow field and the temperature field are derived. When the average temperature field Tk (k = 1, 2, 3, 4) of each water layer is obtained, the latter is obtained according to the relationship between Tk and the characteristic temperature of the corresponding water layer interface. Finally, through the water temperature profile expression, In order to test the function of this model, the three-dimensional thermal structure of the study area on May 15 was reported with the aging time of 5 days and the test results were compared with the measured values.The results showed that the water temperature The absolute error is 0 2 5 ℃, the effect is satisfactory.