海岛测站大风资料代表性的数值模型分析

NUMERICAL SIMULATION ON THE REPRESENTATIVENESS OF ISLAND WIND OBSERVATIONS

对大风情形下实际海岛的风场结构进行数值模拟，结果表明海岛测风明显受海岛地形的影响．通常运用对数或指数风廓线公式，对海岛测风资料作简单高度换算以得到海面１０ｍ风速的订正方法一般是不合理的．通过海岛测站观测值与模拟值的对比分析。

The numerical simulations on wind field structure of two real islands under strong wind conditions are made. The results show that the island topography has obvious effects on island wind observations, it is unreasonable to make the altitude reduction in order to obtain the wind data at 10 m above sea level by exponential or logarithmic profile formula. The simulated values are compared to the island wind observations, from which it is shown that there is necessity and possibility to seek for an approach to correct island strong wind data with numerical simulation.