午夜欧美大片免费观看,欧美激情综合五月色丁香,亚洲日本在线视频观看,午夜精品福利在线

Based on the satellite images and synoptic charts and the radar(CINRAAD/CC) data of a heavy snow in southwestern of Hei Longjiang Province on December 12, 2001 ,the snowing weather process is analyzed. The result shows that the characteristics, such as the inhomogeneity of reflectivity, low level jet in speed field and two layer structure in height field can be obtained with the new generation weather radar ,as well as the difference of radar echoes of snow and rain is compared.