主办单位：中国气象局沈阳大气环境研究所
国际刊号：ISSN 1673-503X
国内刊号：CN 21-1531/P
气象与环境学报

气象与环境学报 ›› 2014, Vol. 30 ›› Issue (2): 45-50.doi:

• 论　文 • 上一篇    下一篇

基于地基GPS遥感的大连地区大气水汽总量变化特征

黄艇1 黄振1 朱晶2 梁宏3 张建国2   

  1. 1.大连市气象台，辽宁 大连 116001 ；2.大连市气象局，辽宁 大连 116001；3.中国气象科学研究院，北京 100081
  • 出版日期:2014-04-28 发布日期:2014-04-28

Characteristics of precipitable water vapor based on ground-based GPS in Dalian

HUANG Ting1 HUANG Zhen1 ZHU Jing2 LIANG Hong3 ZHANG Jian-guo2   

  1. 1. Dalian Meteorological Observatory, Dalian 116001, China; 2. Dalian Meteorological Service, Dalian 116001, China; 3. Chinese Academy of Meteorological Science, Beijing 100081, China
  • Online:2014-04-28 Published:2014-04-28

PDF (PC)

385

被引次数

8

摘要：

基于大连地区地基GPS综合观测网遥感反演了大气水汽总量（PWV），分析了大连地区PWV空间变化、逐月变化和日变化特征以及PWV变化与降水的关系，并利用大连本站2005—2011年的探空资料拟合了大连地区地面温度和大气加权平均温度的关系。结果表明：大连本站的PWV与探空积分的水汽含量相关系数达到0.988，均方根误差为2.5 mm。大连地区PWV南北分布比较均匀；PWV最大的月份为7—8月，最大月平均值约40 mm，PWV最小的月份为1月，最小月平均值小于4 mm；大连地区PWV春季和冬季日变化幅度约0.5 mm，夏季和秋季日变化幅度约1.3 mm。夏季和秋季的PWV日变化呈单峰型，春季和冬季的PWV日变化呈多峰型； 在降水发生前8 h 大气水汽总量有明显增加过程，对降水的发生有指示作用。

关键词: 地基GPS, 大气水汽总量, 大连地区

Abstract:

 Based on the precipitable water vapor (PWV) retrieved from the ground-based GPS observation network in Dalian area, the characteristics of spatial distribution, diurnal variation, monthly variation and the relationship between the PWV and precipitation were analyzed. At the same time, the relationship was fitted between surface temperature and weighted average temperature according to radiosonde data from 2005 to 2011 in Dalian. The results show that the correlation coefficient between the GPS PWV and radiosonde PWV is 0.988 and the root-mean-square error is 2.5 mm. The spatial distribution of the PWV in Dalian is homogeneous. The maximum values of the PWV occur from July to August and minimum values appear in January, and their corresponding monthly averages are 40 mm and 4 mm respectively. The daily variation of the PWV is in a multiple peaks shape with 0.5 mm amplitude range in spring and winter in Dalian, while that in summer and autumn is in a single peak shape with 1.3 mm amplitude range. The PWV increases significantly 8 hours ahead of precipitation, which is of indicative role to the precipitation prediction.

Key words: Ground-based GPS, Precipitable water vapor (PWV), Precipitation