基于三维分解的大尺度垂直环流变化特征分析

Variation Characteristics Analysis of Large Scale Vertical Circulation on Three Dimensional Decomposition

通过探讨大尺度大气环流表示方法的数学变换 ,提出了三维分解方案 ,在全球范围内统一处理热带和中高纬度的环流 ,并依此对垂直环流进行方差分析。结果表明 ,垂直环流以季节变化为主 ,亚洲季风区是全球垂直环流季节变化的强信号区 。

By mathematical transformation of description of large-scale circulation, the scheme of three-dimension decomposition of large-scale circulation is put forward. So the circulation of the tropical and the middle and high latitude can be treated in unition at global scale. Analyse variance of vertical circulation by the scheme, the research indicates: the seasonal variation is the main component of vertical circulation variation, Asia monsoon area has the strongest signal in the world. And the Mid-Pacific Ocean is the strong signal area of interannual variation of vertical circulation.