Based On Regional Atmospheric Water Vapor Content Of The Cors System

Our understanding for the spatial and temporal distribution of water vapor has been restricted by the resolution of conventional observation for atmospheric water vapor. The lack information of water vapor affects the level of forecast of severe weather especially for the nowcasting of heavy rainfall,and limits the accuray of numerical prediction about amount of rainfall.Thus one of discussed problem for meteorology is atmospheric water content should be measured more accurately by a new technology.The technology of detecting atmospheric water vapor based on GPS provides a new means for remote sensing atmosphere,for its many advantages such as high precision,low cost,real-time,continuity and unaffected by weather, which has become a supplementation for routine atmospheric sounding system.The examine of this thesis is based on data from CORS system of Atmospheric Precipitable Water from the self-determination theory,method,then,Analysis has been focused on the error analysis,data processing and calculating the results,and gets useful conclusions.The main research includes:1,The study of CORS system dynamics at home and abroad, and ground-based GPS meteorology research technology and dynamics at home and abroad is described.2,Describing the importance of monitoring water vapor,the traditional means of detection of atmospheric water vapor as well as the lack of highlighting the ground-based GPS sounding of atmospheric water vapor characteristics and advantages,the process GPS atmospheric water vapor are discussed.3,Describing the basics of atmospheric refraction, the model of tropospheric refractive index,the model of tropospheric refraction and mapping function.4,Ground-based GPS data to detect atmospheric water vapor in the process of a variety of errors is analyzed.5,One emphasis in this thesis is correcting the weighted average temperature by the datas of kun ming for 2008 and the mean of stat.then sets up the unitary linearity recursive equation,and analyzes the precision for the result.Otherwise analyzes the applicability of Bevis experiential equation.6,Another emphasis in this thesis is the preliminary test of atmospheric water vapor content in the process to get the tropospheric delay, and draw some corresponding results based on the use of KMCORS system data and national IGS station data.