南京林业大学学报(自然科学版) ›› 2013, Vol. 37 ›› Issue (01): 168-172.doi: 10.3969/j.issn.1000-2006.2013.01.031

• 研究简报 • 上一篇    下一篇

区域大气可降水量变化的地基GPS探测研究

王 亮,郑加柱,魏浩翰   

  1. 南京林业大学土木工程学院,江苏 南京 210098
  • 出版日期:2013-02-18 发布日期:2013-02-18
  • 基金资助:
    收稿日期:2011-10-12 修回日期:2012-05-30
    基金项目:江苏省测绘科研项目(JSCHKY201214); 南京林业大学科技创新基金项目
    第一作者:王亮,硕士生。E-mail: wl88181205@sina.com。
    引文格式:王亮,郑加柱,魏浩翰. 区域大气可降水量变化的地基GPS探测研究[J]. 南京林业大学学报:自然科学版,2013,37(1):168-172.

Detection of PWV change in winter by ground-based GPS

WANG Liang, ZHENG Jiazhu, WEI Haohan   

  1. College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China
  • Online:2013-02-18 Published:2013-02-18

摘要: 利用南京市地基全球定位系统(GPS)网的观测资料,分析比较不同的卫星星历、不同数量的国际GPS服务(IGS)参考站、不同的截止高度角,以及不同的映射函数模型对GPS探测大气可降水量(PWV)的影响。结果表明:使用快速预报星历,选择3个IGS参考站,采用10°以下截止高度角和VMF1映射函数模型进行区域大气可降水量解算是最优的解算策略。最后根据此解算策略,对2009年南京地区某次降雪预报的误报进行分析解释,进一步证明了利用区域GPS网监测大气可降水量可较准确地分析区域大气的天气变化,提高中小尺度天气预报精度。

Abstract: The detection of atmospheric precipitable water vapor by ground-based GPS has become a powerful supplementation for routine atmosphere sounding system.This paper used observation datas based on Nanjing local GPS network to analyze the effects of precipitable water vapor monitoring by GPS under different satellite ephemeris, different numbers of IGS,different cut-off angles and different mapping functions.The results showed that by using the rapid ephemeris, three IGS, under 10° cut-off angle, and with calculating PWV, Vienna Mapping Function(VMF1)were the optimal solution strategies. Finally,according to this strategy,it analyzed and explained a wrong snowfall forecast in Nanjing in 2009,further proved that by using regional GPS network to monitor atmospheric precipitation, we could study the change of regional atmospheric precipitable water vapor and improve the accuracy of small scale weather forecast.

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