【摘要】 使用１９８７年各月逐日２个时次地面、３００、６００、９００、５００、１０００、１５００、２０００、３０００ｍ的风场资料，计算并分析其流场特征，得出我国低空各层次流场的年、季、月平均分布特征。同时还发现我国各台站的边界层内普遍存在一个明显风速极大值区，并得出它所在的高度、风向、风速以及出现频率。更多还原

【Abstract】 Using 1987 twice- daily surface wind data at 300,600,900,500,1000,1500, 2000and 3000m above the ground over China,computation and analysis are made for the streamlinefields features,and the distributions are portrayed on an annual,seasonal and monthly basis forthese levels,with a considerable maximum area found in the boundary layer over all the stationsin the network of the country and its altitude,wind direction/speed and frequency presented.更多还原