大地测量与地球动力学2024，Vol.44Issue(8)：815-819,5.DOI:10.14075/j.jgg.2023.11.138
GNSS/MET观测的台风"烟花"对上海地区PWV的影响
The Impact of Typhoon"In-Fa"on PWV in Shanghai Based on GNSS/MET Observations
摘要
Abstract
We use observation data from 5 GNSS/MET stations in Shanghai from July 21 to August 8,2021 to invert atmospheric precipitable water vapor(PWV)by GAMIT software,and study the rela-tionship between PWV and rainfall in Shanghai and the spatial distribution characteristics of PWV during typhoon"In-Fa".The results show that the correlation between GNSS PWV and sounding PWV is above 0.9.Before the formation of precipitation,PWV undergoes three obvious rise processes and the precipitation generation time is about 60 h ahead of typhoon landfall.PWV sharp change will cause a sharp rise or fall in precipitation.After the precipitation,PWV gradually drops below 40 mm.Before typhoon landfall,PWV is basically above 75 mm;PWV above 80 mm is mainly distributed in southern and central areas of Shanghai.After typhoon landfall,PWV is above 80 mm,and higher val-ue areas can reach 90 mm.After the typhoon moved away,the PWV value dropped below 85 mm.The expansion and progression of the high-value area to the northwest is basically consistent with the typhoon path.关键词
GNSS/MET/大气可降水量/台风/降雨量Key words
GNSS/MET/precipitable water vapor/typhoon/rainfall分类
天文与地球科学引用本文复制引用
夏武松,鲁小琴,赵兵科,刘敏,张帅,林立旻,严嘉明,陆恒星..GNSS/MET观测的台风"烟花"对上海地区PWV的影响[J].大地测量与地球动力学,2024,44(8):815-819,5.基金项目
国家自然科学基金(42005099) （42005099）
上海市气象局科技开发项目(QM202204) （QM202204）
福建省灾害天气重点实验室开放基金(2022TFS02). National Natural Science Foundation of China,No.42005099 （2022TFS02）
Science and Technology Development Project of Shanghai Meteorological Service,No.QM202204 （）
Open Fund of Fujian Key Laboratory of Severe Weather,No.2022TFS02. （）
