2008年东海海面WRF风场和QuikSCAT风场差异分析-海洋预报

2008年东海海面WRF风场和QuikSCAT风场差异分析

单位：上海海洋大学海洋生态系统与环境实验室, 上海 201306

分类号：P732

出版年·卷·期（页码）：2012·29·第五期（39-47）

摘要：

为了分析海面风场资料的实用性,利用WRF(Weather Research and Forecasting Model)模拟了2008年东海海面风场,并比较了WRF模拟结果与QuikSCAT卫星散射计资料的差异。结果表明,两种资料均能反映东海海面风场的季节性变化特征,台风月风速偏差波动较大。分析四个台风个例发现,当台风较弱时,两种风场资料分布情况较一致;当台风较强时,两种资料均有不同程度的偏差,在近海区域,WRF模拟结果相比QuikSCAT资料更好地描述台风周围风场特征。

To analyze the practicability of sea surface wind data, we simulated the wind field over the East China Sea of 2008 using Weather Research and Forecasting Model(WRF). The model results are compared with the QuikSCAT data. The results show that both WRF and QuikSCAT capture the detailed seasonal variation of the sea surface wind field over the East China Sea. The fluctuation of difference of wind magnitudes is large in the months affected by the typhoon. Detailed analysis of four Typhoon passages during July and September shows that:(1)under weak typhoon condition, the difference between WRF and QuikSCAT is slight;(2)under strong typhoon condition, significant difference between WRF and QuikSCAT exists in the near-shore region closing to the center of typhoon, with a better performance of WRF than that of QuikSCAT.

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