Comparative analysis of wind profile radar observation results of two heavy pollution weather processes in Shenyang
To study the mechanisms of heavy pollution weather,the evolutive characteristics of direct detection products and inversion products of wind profile radar were summarized from November 6 to 10,2015 and March 2 to 6,2019(Process Ⅰand Process Ⅱ,respectively)in Shenyang by using wind profile radar data,conventional meteorological observation data and atmospheric pollutant monitoring data.The results show that"Process Ⅰ"had stronger intensity,faster-increasing pollutant concentration,longer low visibility,greater subsidence rate,more stable dynamic conditions and stronger echo signal than that of"Process Ⅱ".The stronger intensity and longer duration of warm advection in the lower layers provided warmer and wetter conditions for pollutant concentration to reach abnormal peaks in the"ProcessⅠ".The two heavy pollution events showed that the external transport effect was obvious and the transport path was different.
heavy pollution weatherwind profile radartemperature advectionSNRatmospheric boundary layer
万方数据
维普
