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Variations of precipitable water vapor using GNSS CORS in Thailand
Survey Review ( IF 1.6 ) Pub Date : 2020-01-20 , DOI: 10.1080/00396265.2020.1713611
Chokchai Trakolkul 1 , Chalermchon Satirapod 1
Affiliation  

This research aims to analyze variation in a time series of Precipitable Water Vapor (PWV time series) using data at 11 widely-distributed Continuously Operating Reference Stations (CORS) in Thailand. In this paper, the PWV time series is estimated based on data from 2007 to 2015, used to monitor trends and seasonal variations. Significant annual variations of PWV are found at all GNSS stations, with amplitude from 6 to 19 kg/m2. The variations between the annual amplitudes of PWV in the South and near the ocean coasts are generally smaller than in the inland regions. The phase shift of annual PWV variation is about −0.43 (around July, rainy season). The comparison of PWV and 24-hour cumulative rainfall data showed that the rainy season (running from around mid-May to the end of October) exhibits the slightest swing, and the highest average amount of PWV. These results are consistent with the 24-hour cumulative rainfall data.



中文翻译:

泰国使用GNSS CORS产生的可沉淀水蒸气变化

这项研究旨在使用泰国11个广泛分布的连续运行参考站(CORS)的数据来分析可沉淀水蒸气时间序列(PWV时间序列)的变化。在本文中,PWV时间序列是根据2007年至2015年的数据估算的,用于监测趋势和季节变化。在所有GNSS站发现PWV的年变化很大,幅度从6到19 kg / m 2。南部和沿海附近的PWV年振幅之间的变化通常小于内陆地区。年度PWV变化的相移约为-0.43(7月左右,雨季)。PWV和24小时累积降雨量数据的比较表明,雨季(从5月中旬到10月底左右)的摆动最小,平均PWV最高。这些结果与24小时累积降雨数据一致。

更新日期:2020-01-20
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