| 基于地基GPS水汽资料对成都地区一次暴雨过程的分析 |
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| 引用本文： | 王越,;魏鸣,;王皓,;刘琦,;龙柯吉.基于地基GPS水汽资料对成都地区一次暴雨过程的分析[J].四川气象,2014(2):8-12. |
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| 作者姓名： | 王越 ;魏鸣 ;王皓 ;刘琦 ;龙柯吉 |
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| 作者单位： | [1]南京信息工程大学,南京210044; [2]成都市气象局,成都610071; [3]成都信息工程学院,成都610041; [4]四川省气象局,成都610072 |
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| 基金项目： | 江苏省高校自然科学重大基础研究项目（10KJA170030）,灾害天气国家重点实验室开放课题（2013LASW-B16）,公益性行业（气象）科研专项（GYHY201306040） |
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| 摘 要： | 本文利用成都地区地基GPS得到的GPS-PWV对2008年一次暴雨过程进行了综合分析,得出了成都地区GPS-PWV的变化同实际降水间存在的相关性.结果表明：GPS-PWV对于空中水汽变化具有很高的敏感性,能及时反映大气中水汽的时空变化;降水强度的极大值滞后于可降水量的峰值,对降水有一定的提前性;强烈的上升运动有利于PWV的积累增长,并且上升运动的强度同GPS-PWV的大小有很强的相关性;GPS-PWV处于高值区时往往大气都处于不稳定的状态。
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| 关 键 词： | 地基GPS 可降水量 暴雨 |
Analysis on a Rainstorm Process in Chengdu Using Ground-based GPS Water Vapor Data |
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| Institution: | WANG Yue, WEI Ming, WANG Hao, LIU Qi, LONG Keji ( 1. Nanjing Information Engineering University, Nanjing 210044, China ; 2. Meteorological Bureau of Chengdu, Chengdu 610071, China ; 3. Cheng du University of Information Technology, Chengdu 610041, China; 4. Meteorological Bureau of Sichuan Province, Chengdu 610071, China) |
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| Abstract: | This paper comprehensively analyzed a rainstorm process in 2008 using GPS - PWV obtained from the ground - based GPS in Chengdu and drew the conclusion that there was the certain correlation between the change of GPS - PWV and actual precipitation. Results showed that GPS - PWV was highly sensitive to the change of water vapor in the air, which could reflect its time - space change timely. The maximum of precipitation intensity lagged behind the peak of precipitable water va- por and was a bit ahead of the precipitation. The strong ascending movement contributed to the cumulative increase of PWV and its intensity was significantly correlated to the magnitude of GPS - PWV. When GPS - PWV was in the high value area, the at- mosphere was always at the unstable status. |
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| Keywords: | ground - based GPS perceptible water rainstorm |
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