期刊
ADVANCES IN SPACE RESEARCH
卷 70, 期 5, 页码 1375-1387出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.asr.2022.05.065
关键词
Global Positioning System; GPS meteorology; Precipitable water vapor; Mei-yu season; Rainfall
类别
资金
- Ministry of Science and Technology of the Republic of China, Taiwan [110-2111-M-305-001]
- MOST
This study analyzes the long-term spatial-temporal changes in rainfall and perceptible water vapor (PWV) during the Mei-yu season from 2006 to 2019. The results show that the Mei-yu season has extended in recent years, with higher PWV in southern Taiwan and increased rainfall in the central and southern mountain regions.
The Mei-yu season contributes 26.3% of the annual precipitation and provides important water resources to Taiwan. GPS meteorol-ogy derives continuous, real-time and high spatial coverage of perceptible water vapor (PWV), which supports weather forecasting for rainfall indicators. This study analyzes the long-term spatial-temporal changes in GPS PWV and rainfall data during the Mei-yu season from 2006 to 2019. The daily average data show that the Mei-yu season extended in recent years. Both daily rainfall and PWV increase in mid-May and rainfall reaches a maximum in early June, while PWV maintains stable in June. The yearly results show that the trend of the accumulated rainfall in the Mei-yu season is flat, and that PWV increases by 13% over 14 years, which may be due to global warming as the trend of temperature increases by 8%. Spatially, PWV is significantly higher in southern Taiwan during the Mei-yu season, and rainfall increased the most in both the central and southern mountain regions.(c) 2022 COSPAR. Published by Elsevier B.V. All rights reserved.
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