排序方式： 共有25条查询结果，搜索用时 15 毫秒
21.
对区域中尺度数值预报模式ZMM4对我省1995-1997年梅雨期的降水预报能力进行了检验;结合梅雨期的天气形势特点与日本E03的降水预报作对比分析,结果表明ZNH4有较好的预报能力。但与E03一样,雨量容易报得偏小,分析结果有利于数值预报产品的业务使用和模式的改进。 相似文献
22.
23.
A DYNAMICAL INTERPRETATION OF THE WIND FIELD IN TROPICAL CYCLONES WITH THE CONSIDERATION OF OROGRAPHIC FACTORS 总被引：1，自引：0，他引：1
Based on the barotropic primitive equation in the polar coordinate system and the appropriate
assumption, we obtained the mathematical equation of orographic forcing on unit mass air parcel. With the
consideration of the frictional stress of the sea and land, supposing that parcel velocity in tropical cyclones
is in linear variation and that the distribution of surface pressure is circular, a set of equations are derived,
which describe the impact of orographic slope error, the central pressure error and position error of tropical
cyclones on the wind field in the tropical cyclone. Typhoon Wipha (2007) is selected to verify the above
interpretation method. The results show that the orographic slope, the frictional coefficient, the intensity
and position of the cyclone are the important factors which have great influence on the interpretation of
wind information about tropical cyclones. The dynamic interpretation method gives very good results,
especially for the coastal area. It is applicable to improving the forecasts of the wind field in tropical
cyclones. 相似文献
24.
25.
从1999年梅汛期的三次强降水过程和降水特点出发,分析了造成特大洪涝的降水成因,并指出了1999年梅汛期预报服务的成功和不足之处,对今后做好梅汛期天气预报服务工作有一定的参考作用。 相似文献