日全食对地基GPS和微波辐射计气象观测影响分析  

Observation of the meteorological parameters changes by GPS/MET and Microwave Radiometers during the 22 July 2009 Total Solar Eclipse

作　　者：万蓉[1,2] 李武阶[2] 陈波[2] 徐桂荣[2] 邹倩[2] 

机构地区：[1]南京信息工程大学大气物理学院,南京210041 [2]中国气象局武汉暴雨研究所,武汉430074

出　　处：《华中师范大学学报（自然科学版）》2010年第1期145-151,共7页Journal of Central China Normal University：Natural Sciences

基　　金：国家自然科学基金项目40575011;中央级公益类科研院所基本科研业务费专项暴雨0902项目;湖北省气象科技发展基金项目(2007Z03)

摘　　要：利用2009年7月22日日全食前后地基GPS/MET水汽监测和微波辐射计观测的资料,分析日全食对温度、相对湿度、液态水含量、水汽密度廓线、地面温度、气压、水汽总量、液态水总量、云底高度、以及GPS探测的大气可降水汽总量等气象观测量的影响.同一站点日全食发生前后资料对比、以及位于日全食带和非全食带不同站点的同时资料对比分析显示:在两种设备的气象观测中,日食最为直接影响的是200 m以下近地层的温度和相对湿度,并对1 000 m以下区间温度和相对湿度形成明显的扰动;对于气压、水汽和液态水总量的影响较弱,对云底高度的影响不明显.Based on the GPS/MET and Microwave Radiometers observing during the total solar eclipse on 22 July 2009 ,the impacts of the solar eclipse on the shelter air parameters including temperature, relative humidity, water vapor density, Liquid content, surface air pressure, integrated vapor, and the precipitation water vapor from gps are presented. Compared the data before to those during the solar eclipse, and compared the data got in the total solar eclipse zone to those got out the zone, as the results, the obser- vations indicated near-surface temperature drops of as much as 1 K. the temperature and the relative humidity under the altitudes of 200 m are impacted obviously respectively with the maximum changes 4K and 6% ; Both parameters＇ perturbations are appeared under the altitudes of 1000 m. Because of local weather condition, surface pressure, water vapor and liquid parameters are impacted indirectly and weakly, and the height of the Cloud base measurement produced a null result.

关 键 词：日全食 GPS/MET 微波辐射计 观测 影响 

分 类 号：P414.5[天文地球—大气科学及气象学] P182.2