Mean Annual Wind Speed的意思|示意

The mean wind energy density, mean effective wind energy density and annual available time of wind energy are calculated by using Two-Parameter Weibull Distribution function of wind speed.

采用风速的韦布尔双参数方法测算出平均风能密度、平均有效风能密度，以及年风能可利用时间。

Meteorological records in the past 50 years indicate that there has been a sharp decrease in sand dust storm frequency, which is in accordance with the decrease in annual mean wind speed.

近50年来多个站点的观测记录表明了沙尘暴的发生频率处于快速下降的过程，这恰好与年均风速的变化趋势较为一致。