The conclusions are as follows:The surface wind field is highly asymmetric;the variance components of asymmetric surface wind field depend mainly on the airflow direction of wavenumber 1 and 2.

• 结果表明:台风近地层风场分布具有明显的不对称性,其方差大部分产生于波数1和2的气流中,并且与波的方向有关。