AN APPLICATION ANALYSIS OF THE GROUND-BASED MICROWAVE RADIOMETERS OBSERVATION IN LIGHTNING POTENTIAL PREDICTABILITY
GOU A-ning
HAN Fang-rong
ZHANG Wen-gang
LIU Xi-wen
NIU Ben
Abstract：Based on the establishment of Hubei lightning potential forecast using convection parameters,we mainly studied the ground-based microwave radiometers data in improving the application value of lightning potential forecast.The convection parameter and threshold were then modified,and then a lightning potential forecast method was formed by a correction parameter.With the data collected by the ground-based microwave radiometers in Wuhan and Jingzhou stations operated by the Institute of Heavy Rain,CMA,the characteristics of vapor density,atmospheric liquid content,relative humidity and instability index measured by the microwave radiometers during a thunderstorm on April 29 2013 were analyzed.In this paper,the data reliability of the ground-based microwave radiometers was first analyzed,and then by comparing the correlation of convection parameters based on numerical model and microwave radiometers data,the instability index based on numerical model displays that K≥33 ℃,T85-500≥23 ℃,A ≥ 10 ℃ and △Td850≤ 3 ℃ have a good correlation with the lightning,but the K index,A index and T580-500 are different from the microwave radiometers,respectively above 35 ℃,25 ℃ and 20 ℃,compared with the lightning potential predictability calculated by the instability index of two groups with different thresholds.The results show that the ground-based microwave radiometers data have a certain value of reference in the improvement of lightning potential predictability.
Keywords：atmospheric detectionlightning potential forecastforecast factorground-based microwave radiometers
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：11( 268-278 )