J4 ›› 2010, Vol. 28 ›› Issue (3): 279-284.

• 论文 • 上一篇    下一篇

川西高原地基GPS 遥测可降水量特征

王维佳1,2赵兴炳1   

  1. 1.中国气象局成都高原气象研究所,四川成都610072; 2. 四川省人工影响天气办公室,四川成都610072
  • 收稿日期:2010-01-20 修回日期:2010-05-27 出版日期:2010-09-30 发布日期:2010-09-30
  • 作者简介:王维佳( 1980-) ,女,工程师,主要从事人工影响天气业务和大气物理研究. E-mail: wjwang999@ sohu.com
  • 基金资助:

    川气课题2010 - 青年- 13 和中国气象局2010 年气象新技术面上推广项目( CMATG2010M21) 共同资助

Characteristics of Precipitable Water from Ground - Based GPS Measurements in Western Sichuan Plateau

 WANG Wei-Jia, DIAO Xin-Bing   

  1. 1. Institute of Plateau Meteorology,CMA,Chengdu 610072,China;
    2. Weather Modification Office of Sichuan Province,Chengdu 610072,China
  • Received:2010-01-20 Revised:2010-05-27 Online:2010-09-30 Published:2010-09-30

摘要:

利用JICA 项目在川西高原建设的地基GPS 站观测资料,分析了川西高原可降水量特征。与探空站资料计算的可降水量比较,地基GPS 遥测的可降水量平均误差0. 17 mm,精度可满足气象应用需求。全年可降水量川西高原北部为3 289. 6 mm,川西高原南部为8 164. 4 mm。川西高原夜间可降水量略大于日间; 夏季最多,秋季次之,冬季最少,四季干湿分明,冬夏差异显著; 月变化明显,昼夜月变化趋势基本相同。

关键词: 地基GPS, 可降水量, 探空, 川西高原

Abstract:

the ground - based GPS data of JICA program,the characteristics of precipitable water in Western Sichuan Plateau
were analyzed in his paper. Comparison the estimates of precipitable water from GPS measurements with sonde observations shows that
the mean error is 0. 17 mm,that is,the precision of the estimates of precipitable water from GPS measurements can fill the requirements
of meteorological application. It is found that annual precipitable water in north part of Western Sichuan Plateau is 3 289. 6 mm,
while in south part that is 8 164. 4 mm. The precipitable water in the nighttime is a bit higher than that in the daytime. Precipitable
water contributes most in summer,secondarily in autumn,least in winter,which shows that there are distinctive dry and wet seasons in
Western Sichuan Plateau. Meanwhile,precipitable water varies with month obviously,as well as its monthly variation trend in the
nighttime is almost the same as that in the daytime.

Key words: ground-based GPS, precipitable water, sounding, Western Sichuan Plateau

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