南京林业大学学报（自然科学版）2013，Vol.37Issue(1)：168-172,5.
区域大气可降水量变化的地基GPS探测研究
Detection of PWV change in winter by ground-based GPS
摘要
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.关键词
地基GPS/大气可降水量/截止高度角/映射函数Key words
ground-based GPS/ precipitable water vapor (PWV) / cut-off angle/ mapping functions分类
天文与地球科学引用本文复制引用
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):168-172,5.基金项目
江苏省测绘科研项目(JSCHKY201214) （JSCHKY201214）
南京林业大学科技创新基金项目 （）
