2007年湖北省梅雨期可降水量的GPS观测和分析

长江流域资源与环境 >> 2009, Vol. 18 >> Issue (6): 535-.

2007年湖北省梅雨期可降水量的GPS观测和分析

陈 |波¹| 史瑞琴²| 陈正洪²

（1. 中国气象局武汉暴雨研究所|湖北武汉 430074； 2. 武汉区域气候中心|湖北武汉 430074）

出版日期:2009-06-20

INVESTIGATION AND ANALYSIS BY GLOBAL POSITIONING SYSTEM ON PRECIPITABLE WATER VAPOR DURING MEIYU PERIOD OF 2007 YEAR IN HUBEI PROVINCE

CHEN Bo¹| SHI Ruiqin²| CHEN Zhenghong^2

(1. Wuhan Institute of Heavy Rain, Chinese Meteorological Administration, Wuhan 430074|China;
2. Wuhan Region Climate Center, Wuhan 430074|China)

Online:2009-06-20

摘要/Abstract

摘要：

介绍了湖北省2006年建成的GPS(全球定位系统)气象探测网对2007年梅雨期可降水量的探测，指出GPS探测的可降水量(〖WTBX〗PWV)〖WTBZ〗与探空资料所计算的可降水量具有高度的一致性。通过对多站GPS资料时间序列的分析，揭示了在梅雨期过程中〖WTBX〗PWV的3个阶段的变化特征：在梅雨期来临前PWV都有一个急升的过程，PWV的急升时间长短、升幅、量值大小反映了水汽累积情况，它与梅雨期降水过程有较好的对应关系；梅雨过程中PWV急升达到峰值的过程伴随着明显的降水，进入高值波动阶段后，降水继续维持，PWV下降的过程中，降水逐步减小，直至停止，在这一阶段中PWV时间序列的波动和空间分布特征与梅雨期降水的短时变化有较好的对应关系；PWV〖WTBZ〗的变化幅度和平均量值的平稳减小则反映梅雨期即将结束.

关键词: 全球定位系统/ 梅雨期/ 可降水量

Abstract:

By meteorological detection net of Global Positioning System(GPS)set up in 2006 year in Hubei Province,the paper makes detection to precipitable water vapor(〖WTBX〗PWV〖WTBZ〗)during meiyu period of 2007 year,and indicates that 〖WTBX〗PWV〖WTBZ〗 detected by GPS and that calculated by radiosonde data has high consistency.By means of analysis of time series of GPS data in multistation,the paper posts change characteristic of three phases of 〖WTBX〗PWV〖WTBZ〗 during meiyu period.Before the meiyu period comes,〖WTBX〗PWV〖WTBZ〗 has a rapid rise.The length,extent and magnitude of rapid rise reflect accumulation of water vapor,it has better corresponding relationship with precipitation process during meiyu period;during meiyu period,the process that rapid rise of 〖WTBX〗PWV〖WTBZ〗 reaches the peak has concomitant obvious precipitation,after entering high fluctuation phase,the precipitation holds on,in the course of 〖WTBX〗PWV〖WTBZ〗 descends,the precipitation steps down,up to stop.In the phase,the fluctuation of time series of 〖WTBX〗PWV〖WTBZ〗 and spatial distribution have better corresponding relationship with shortterm change of precipitation during meiyu preiod;reposefully diminishing of change amplitude and average magnitude of 〖WTBX〗PWV〖WTBZ〗 reflects that the meiyu period is about to end.

Key words: Global Positioning System(GPS)/meiyu period/precipitable water vapor

陈波| 史瑞琴| 陈正洪. 2007年湖北省梅雨期可降水量的GPS观测和分析[J]. 长江流域资源与环境, 2009, 18(6): 535-.

CHEN| BEI | Shi-Rui-Qin-| Chen-Zheng-Hong-. INVESTIGATION AND ANALYSIS BY GLOBAL POSITIONING SYSTEM ON PRECIPITABLE WATER VAPOR DURING MEIYU PERIOD OF 2007 YEAR IN HUBEI PROVINCE[J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, 2009, 18(6): 535-.

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