Forecasting of the Wind at Higher Level

Abstract

It is well known that the prevailing westerly wind is a result of the general circulation of atmosphere, and essentially, when an air mass displaces from lower latitude to higher latitude following the law of the conservation of angular momentum, the westerly component becomes mo_??_e strong on account of rotation of the globe. So, the s_??_rength of the prevailing wind are only controlled by meridional circulations. As a souse to make this meridional circulations hasten, We considered a low pressure part at higher level when the monsoon bursts out from the Mongorian anticyclone rapidly in winter. and excites the compensation current from the sorroundings especially from south into this part of low pressure, then the meridional circulations are hastened and prevailing westerly wind becomes strong. Basing on this consideration, we got a new method of wind forecasting at higher level by using the pres ure pattern at ground prevailing in winter, We can predict the wind velocity at higher level with errors of about 10m/sec, using the above method.