Analysis of Atmospheric Water Vapor Content Reversion in Beijing 7·21 Rainstorm Based on GNSS

doi:10.13474/j.cnki.11-2246.2018.0180

Abstract

Abstract: This paper introduces the principle of using GNSS observation data to retrieve atmospheric precipitable water,and analyzes the variation characteristics of atmospheric precipitation before and after 2012 Beijing rainstorm.It is found that on 21st July 2012 the precipitation in the atmosphere of Beijing was increasing rapidly in the short time.With the rainstorm weakening,the precipitation in the atmosphere was gradually reduced,and the precipitation would drop sharply after the rainstorm,and return to the normal level in the northern area.In addition,the comparison between GNSS analysis results and NECP data as well as radiosonde data demonstrates the correctness and reliability of using GNSS observation data to inverse atmospheric precipitation.

Key words: GNSS, reversion, perceptible water vapor, radiosonde, heavy rainfall

CLC Number:

P228.4

LI Sen, JIA Guangjun. Analysis of Atmospheric Water Vapor Content Reversion in Beijing 7·21 Rainstorm Based on GNSS[J]. 测绘通报, 2018, 0(6): 78-81,97.

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