基于GSCORS浅析甘肃一次局地暴雨过程中GPS可降水量时空变化特征  

Spatio-temporal variation of GPS PWV for a local rainstorm based on GSCORS in Gansu Province

作　　者：张朋吉 李振宇 Zhang Penni;Zhenyu(Surveying and Mapping Engineering Institute of Gansu,Lanzhou 730000,China;Emergency surveying and Mapping Research Center of Gansu,Lanzhou 730000,China)

机构地区：[1]甘肃省测绘工程院,甘肃兰州730000 [2]甘肃省应急测绘研究中心,甘肃兰州730000

出　　处：《矿山测量》2018年第6期92-96,共5页Mine Surveying

摘　　要：基于甘肃省卫星连续运行参考站(GSCORS)反演得到的GPS可降水量(PWV)浅析2018-04-19甘肃局地一次突发性暴雨时空变化过程。结果表明,GPS方法在突发性暴雨发生2～3 h前可提供高时空分辨率的PWV时空变化图像;通过与实际降雨范围,降雨量的对比,证实了此次暴雨天气中反演得到的PWV与实际降雨之间的高度吻合性。为今后GSCORS网辅助预报甘肃省局地暴雨降雨范围、降雨时间提供参考。The spatio-temporal variation process of a locial rainstorm in the area of 2018-04-19was analyzed by the GPS precipitable rainfall (PWV)retrieved from the satellite continuous operation reference station (GSCORS)in Gansu Province.Results showed that the GPS method could provide a high temporal and spatial resolution image of PWV spatio-temporal variation before the occurrence of the sudden heavy rain ;through contrasting with the actual rainfall range and the rainfall,the high coincidence between the PWV and the actual rainfall in this rainstorm was confirmed providing a reference for the forecast of the rainfall range and the rainfall time of the GSCORS network in future.

关 键 词：暴雨 GPS可降水量 时空分辨率 预报 

分 类 号：TD172[矿业工程—矿山地质测量]