Application Analysis of HTG-4 Microwave Radiometer Data in Two Summer Thunderstorms at Guiyang Airport
This paper aims to study the role of microwave radiometer data in the analysis and prediction of thunderstorm weather.Using the sounding data from Guiyang observation station,and the microwave radiometer data,conventional observation data as well as ERA5 0.25 ° × 0.25 ° reanalysis data,we investigate the detection effect of HTG-4 microwave radiometer at Guiyang Airport and analyze the two thunderstorm processes at Guiyang Airport in summer 2022 by means of statistics,comparison and diagnostic analysis.The results show that the overall correlation of the microwave radiometer detection data and the sounding station data is high,and the detection of the temperature and low dew point above the airport is more reliable.During the two thunderstorms at the airport,the microwave radiometer detected that the atmosphere aloft turned into a distribution of"dry and cold above,warm and wet below",the values of IWV,LWP and LPR surged,and the energy index fluctuated significantly.After the thunderstorm ended,the values of IWV,LWP and LPR dropped rapidly,and the energy index returned to a stable state.The microwave radiometer data can show the changes of temperature and humidity conditions during a thunderstorm more sensitively and intuitively.It is concluded that the triggering mechanism and water vapor content of systemic thunderstorms and local geothermal convection are different.The microwave radiometer can provide about 20 min advance warning for the start,end and evolution of systemic thunderstorms,but it is difficult to give advance warning for the start and end of local thermal convection.
NETL
NSTL
万方数据
