【摘要】 本文利用日本GMS低云风资料,对东亚及北太平洋西部(取北纬10°—45°,东经105°—150°范围)1983年7月21日08时—22日20时(北京时)的850百帕流场进行初步研究。对仅有无线电探空资料的流场(称常规流场)和前者加上卫星云风资料后的流场(称混合流场)作了比较。通过客观分析,发现两种流场在北太平洋西部有很大的差别,后者能更好地反映出热带海洋上的流场。对上述两种流场物理结构(涡度和散度)的分析,也发现两者在热带海洋上有较大差异,混合流场的物理特征与环流系统配合较好。更多还原

【Abstract】 The wind fields of 850 mb, with and without CMS low cloud winds, are analyzed in the area from 10° to 45° N and 105° to 150° E by a successive correction objective analysis scheme for the period from 0000Z July 21 to 1200Z July 22, 1983. The results show that there are significant difference between the two wind fields in the tropical oceanic region, but a littile difference in the land region, Comparing the characteristics of the wind fields with the satellite cloud images and the circulation systems with vorticity and divergence, the wind fields with low cloud winds are more accurate.更多还原