• 全国中文核心期刊
  • 中国科技核心期刊
  • 美国工程索引(EI)收录期刊
LI Guo-ping, HUANG Ding-fa, LIU Bi-quan. Composite study of diurnal cycle of precipitable water vapor derived from ground-based GPS in Chengdu Plain during the warm season[J]. Advances in Water Science, 2006, 17(2): 160-163.
Citation: LI Guo-ping, HUANG Ding-fa, LIU Bi-quan. Composite study of diurnal cycle of precipitable water vapor derived from ground-based GPS in Chengdu Plain during the warm season[J]. Advances in Water Science, 2006, 17(2): 160-163.

Composite study of diurnal cycle of precipitable water vapor derived from ground-based GPS in Chengdu Plain during the warm season

Funds: The study is financially supported by the National Key Basic Research and Development Project of China(No.2004CB418300) and the National Natural Science Foundation of China(No.40375023).
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  • Received Date: June 27, 2005
  • Revised Date: August 24, 2005
  • In this study,the hydrological cycle especially diurnal cycle of the precipitable water vapor derived from GPS( PWV GPS) is investigated based on the ground-based the GPS observation experiment and automatic weather stations in the Chengdu Plain of southwest China during the period of J uly to September 2004.The comparison of the PWV GPS and those from radiosonde observations is given at Chengdu station,with the RMS(Root Mean Square) differences of 3.09 mm.This is surprisingly small considering the distance of up to several tens of kilometers between radiosonde station and closest GPS site.The diurnal variations of water vapor in Chengdu Plain were preliminarily investigated with the PWV GPS and the surface meteorological data.The diurnal variations of the PWV and some surface meteorological elements were composite during the warm days at Chengdu and Pixian.The PWV GPS showed a clear diurnal cycle with the amplitude of about 3 mm and changed obviously in day and little at night.A typical feature of the diurnal variation at Chengdu and Pixian is that the maximum,43.5 mm and 38.0 mm,respectively,appeared in late afternoon,and the minimum,40.5mm and 35.0mm,respectively appeared in early morning.The variation period of PWVGPS is similar to that of surface temperature,they are all controlled by the diurnal variation of solar radiation.The comparison of the PWVGPS and the rainfall shows that there is a good correlation between them in the calm warm season.The precipitating is observed frequently in the evening.The main rainfall process will occur after the PWVGPS reaches its maximum in the late afternoon,which leads to a remarkable decrease of the PWV GPS and a rapid rise of surface water vapor.When the drop of the PWV GPS is stable,the main rainfall process will stop.The accumulating and releasing processes of the PWVGPS is also well related to the rainfall,its increase or decrease continuously suggests the beginning or the end of the rainfall,respectively.
  • [1]
    张家诚,林之光.中国气候[M].上海:上海科学技术出版社,1985,196-222.
    [2]
    Bevis M,Businger S,Herring T A,et al.GPS Meteorology:Remote sensing of atmospheric water vapor using the Global Positioning System[J].J Geophys Res,1992,97:15787-15801.
    [3]
    李成才,毛节泰,李建国,等.全球定位系统遥感水汽总量[J].科学通报,1999,44(3):333-336.
    [4]
    Wu P,Hamada J I,Mori S,et al.Diurnal variation of precipitable water over a mountainous area of Sumatra Island[J].J Appl Meteor,2003,42:1 107-1 115.
    [5]
    Ohtani R.Detection of water vapor variations driven by thermally-induced local circulations using the Japanese continuous GPS array[J].Geophys Res Let,2001,28:151-154.
    [6]
    Takagi T,Kimura F,Kono S.Diurnal variation of GPS precipitable water at Lhasa in premonsoon and monsoon periods[J].J Meteor Soc Japan,2000,78:175-179.
    [7]
    陈世范.GPS气象观测应用的研究进展与展望[J].气象学报,1999,57(2):242-252.
    [8]
    李国平,黄丁发.GPS遥感区域大气水汽总量研究的回顾与展望[J].气象科技,2004,32(4):201-205.
    [9]
    Duan Jingping,Bevis M,Fang Peng,et al.GPS meteorology:Direct estimation of the absolute value of precipitable water[J].J Appl Meteor,1996,35:830-838.
    [10]
    Ohtani R,Naito I.Comparisons of GPS-derived precipitable water vapors with radiosonde observations in Japan[J].J Geophy Res,2000,105:26 917-26 929.
    [11]
    梁丰,李成才,王迎春,等.应用区域地基全球定位系统观测分析北京地区大气总水汽量[J].大气科学,2003,27(2):236-244.
    [12]
    李延兴,徐宝祥,胡新康,等.用地基GPS观测站遥测大气含水量和可降雨量的理论基础与试验结果[J].中国科学(A辑),2000,30(增刊):107-110.

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