Detection of precipitable water vapor during summer rainfall by Nanjing GPS network

Haohan Wei; Jiazhu Zheng; Xiaoyun Shi

doi:10.1117/12.867041

20 August 2010 Detection of precipitable water vapor during summer rainfall by Nanjing GPS network

Haohan Wei, Jiazhu Zheng, Xiaoyun Shi

Proceedings Volume 7820, International Conference on Image Processing and Pattern Recognition in Industrial Engineering; 782035 (2010) https://doi.org/10.1117/12.867041
Event: International Conference on Image Processing and Pattern Recognition in Industrial Engineering, 2010, Xi'an, China

Abstract

According to the ground-based principles of GPS meteorology, utilizing on the observation data of Nanjing regional GPS network, introducing the observation data of three IGS base stations to construct very long baselines, and combining with the atmospheric parameters by surface observation, the GPS absolute precipitable water vapor (PWV) and relative PWV were estimated. Compared with SONDE PWV and the actual surface rainfall, results show that there has a good relativity between GPS PWV and SONDE PWV; according to SONDE PWV, whether the average difference or correlation coefficient, GPS absolute PWV is better than relative PWV; The variation of GPS PWV value can be an intuitive response to changes in the actual surface rainfall, and Rainfall usually occurs in 4-6 hours after the value of GPS-PWV had a rapid increase; and with the value of GPS PWV significantly rise or drop, it shows the beginning or end of the rainfall. In addition, it's useful for studying on regional changes in atmospheric water vapor with Estimating PWV by regional GPS network, and can improve the accuracy of meso-, micro-scale weather forecast.

Citation Download Citation

Haohan Wei, Jiazhu Zheng, and Xiaoyun Shi "Detection of precipitable water vapor during summer rainfall by Nanjing GPS network", Proc. SPIE 7820, International Conference on Image Processing and Pattern Recognition in Industrial Engineering, 782035 (20 August 2010); https://doi.org/10.1117/12.867041

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KEYWORDS

Global Positioning System

Environmental sensing

Atmospheric sensing

Satellites

Water

Meteorology

Earth's atmosphere

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