FY-4A卫星闪电资料与ADTD闪电资料在四川省冕宁暴雨中的对比分析及数值模拟  

Comparative Analysis and Numerical Simulation of Lightning Detection Data from FY-4A Satellite and ADTD for Rainstorm in Mianning,Sichuan Province

作　　者：赵婥 徐国强[2] 黄守友 程佳佳 Chuo ZHAO;Guoqiang XU;Shouyou HUANG;Jiajia CHENG(Chinese Academy of Meteorological Sciences,Beijing 100081;Center for Earth System Modeling and Prediction of China Meteorological Administration,Beijing 100081;Institute of Software,Chinese Academy of Sciences,Beijing 100190)

机构地区：[1]中国气象科学研究院,北京100081 [2]中国气象局地球系统数值预报中心,北京100081 [3]中国科学院软件研究所,北京100190

出　　处：《大气科学》2023年第3期769-785,共17页Chinese Journal of Atmospheric Sciences

基　　金：国家重点研发计划项目2018YFC1506603;风云卫星应用先行计划FY-APP-ZX-2022.01;国家自然科学基金项目42175167。

摘　　要：FY-4A卫星闪电资料与地基ADTD(Advanced Direction and Time of arrival Detecting system)闪电资料对于研究暴雨等强对流天气具有一定的指示意义,通过对四川省冕宁暴雨个例的研究,对比分析了这两种闪电资料的差别,设计了将两种闪电资料引入数值预报模式的多组数值试验。结果表明:(1)两种闪电资料在不同地区有不同的探测效果,ADTD闪电资料范围更广且分散,FY-4A卫星监测到的闪电数量更密集、分布更集中;两种闪电资料在进入模式之后所转化成的代理雷达回波具有很好的一致性;对于低频次的闪电来说,ADTD闪电定位仪可能比FY-4A闪电成像仪探测效率更高。(2)引入任何一种闪电资料都对降水预报具有正效果,其中ADTD闪电资料的应用对于短时降水预报准确率的提高更为有效。(3)两种闪电资料对于云微物理量的调整作用,在不同的区域有不同效果,说明这两种闪电资料的分布不完全一致,揭示出这两种闪电资料具有一定的互补性。Lightning data obtained from the FY-4A satellite and ADTD(Advanced Direction and Time of arrival Detecting system)are significant for studying rainstorms and severe convection weather.This paper compares and analyzes the differences between the two lightning data through a case study of a rainstorm in Mianning,Sichuan Province.A series of numerical experiments are designed to introduce the two kinds of lightning data into a numerical prediction model.The main conclusions are:(1)Two kinds of lightning data have different detection effects in different areas.The ADTD lightning data are more extensive and scattered,whereas the number and distribution of lightning detected by the FY-4A satellite are more intensive.However,there is a good consistency between the two kinds of surrogate radar echo transformed by the two lightning data kinds.For low-frequency lightning,the ADTD lightning localizer may be more efficient than FY-4A LMI(Lightning Mapping Imager).(2)The introduction of these two types of lightning data has positive effects on precipitation forecast,and the application of ADTD lightning data is more effective for improving the accuracy of short-time precipitation forecast.(3)The two types of lightning data have different effects on the cloud microphysical quantities adjustment in different regions.This shows that the distribution of the two types of lightning data is not entirely consistent,but they are complementary to each other.

关 键 词：闪电资料 对比分析 云分析 数值试验 

分 类 号：P456[天文地球—大气科学及气象学]