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结合大尺度环流背景、区域自动站实况资料、雷达基本反射率产品和径向速度产品、风廓线雷达产品,对2010年9月下旬上海一次层云降水过程进行中尺度分析。发现在此次层云降水过程中,近地面中尺度低压环流活动与降水强度变化关系密切。使用多普勒天气雷达径向速度产品和风廓线雷达产品,可以捕捉到近地面中尺度低压环流的活动,且与降水情况对应较好。
Based on the large-scale circulation background, the real-time data of regional automatic stations, the basic radar reflectivity products and the radial velocity products and the wind profiler radar products, a mesoscale analysis was made on the precipitation in a stratosphere cloud in Shanghai in late September 2010. It is found that the mesoscale low pressure circulation around the surface is closely related to the change of precipitation intensity during the precipitation in this stratus. The use of Doppler weather radar radial velocity products and wind profiler radar products can capture near-surface mesoscale low-pressure circulations and correspond well with precipitation.