鄂中区域大雾天气中地基GPS监测的水汽总量及其演变分析  

Analysis of Precipitable Water Vapor from Ground-Based GPS and Its Evolution in Heavy Fog in Central Hubei

作　　者：何盛浩 周志敏[2] 梁涛 He Shenghao;Zhou Zhimin;Liang Tao(Jingmen Meteorological Bureau,Jingmen 448000;Wuhan Institute of Heavy Rain of China Meteorological Administration,Wuhan 430074)

机构地区：[1]荆门市气象局,荆门448000 [2]中国气象局武汉暴雨研究所,武汉430074

出　　处：《气象科技进展》2018年第6期6-16,共11页Advances in Meteorological Science and Technology

基　　金：湖北省气象局科技发展基金(2010Q03)

摘　　要：随着全球定位系统(GPS)气象学的迅速发展,GPS技术已在气象领域得到广泛研究和应用。介绍了GPS探测大气水汽的原理及地基GPS反演大气可降水量(PWV)的流程。利用湖北省GPS观测网2008年7月—2010年12月的GPS资料反演出的大气可降水量(GPS-PWV),结合地面观测资料,对2008年7月—2010年12月的冬季大雾天气进行了分析。通过对有雾与无雾情况下GPS-PWV与能见度的合成分析,总结了鄂中区域冬季大雾天气中GPS-PWV的日变化特征和空间分布特征,并对比分析了无雾天气与有雾天气的GPS-PWV日变化等。还使用GPS-PWV数据与其他常规气象资料,通过线性回归建立预报方程,并对2011年大雾预报进行了检验分析,为利用GPS可降水量做大雾天气的短时临近预报提供了有价值的参考信息。Many studies are starting to use GPS technology in meteorology.This paper introduces the principle of GPS detection of atmospheric water vapor and the scheme of atmospheric precipitable water vapor(PWV)retrieval from ground-based GPS.Atmospheric PWV retrieval using GPS data from 2008 July to 2010 December from the Hubei GPS observation network was combined with ground observation data.This paper analyzes winter fog from this period.Synthesized GPS-PWV data and visibility for foggy and clear conditions were analyzed.The diurnal variation and spatial distribution characteristics of GPS-PWV in winter fog in Hubei are shown,and daily variation of GPS-PWV of foggy and clear conditions are contrasted.A prediction equation is established based on linear regression between GPS-PWV data and conventional meteorological data.This equation is then tested and used to analyze fog forecasts for year 2011.This paper offers valuable reference information for short-time forecasts of the heavy fog.

关 键 词：地基GPS GPS可降水量 大雾 

分 类 号：P228.4[天文地球—大地测量学与测量工程]