GPS技术在北京暴雨探测应用的研究

Initial research of GPS technology in Beijing torrent detection

利用GPS水汽探测技术,重点对北京地区2012年7月21日特大暴雨天气的水汽方面进行研究,比较了用GPS技术得到的水汽(GPS/PWV)和用探空方式得到水汽(Radio/PWV),并同实际降水进行了比对,证实了在暴雨天气中用GPS技术探测水汽的可靠性和敏感性。计算了北京地区的湿延迟转换因子,为今后用GPS技术辅助预报北京暴雨天气提供参考。

This paper focuses on the research of torrent on July 21, 2012 in Beijing by using GPS technology. Comparing the GPS/PWV with Radio/PWV, and the actual precipitation, the accuracy and sensibility of GPS remote sensing atmosphere are verified. The wet delay transfer factors in Beijing area are calculated. It.may give some useful references for auxiliary weather prediction by using GPS technology.