滦河流域TRMM卫星降水数据适用性研究
Applicability of TRMM Satellite Precipitation Data in the Luanhe River Basin
王冰 1鲁菲儿 1周莎莎1
作者信息
摘要
利用滦河流域8个雨量站点2003-2019年实测降水资料,对TRMM卫星降水数据在滦河流域的适用性进行了评估.结果表明,TRMM降水量与实测降水量具有一致的年内分布规律和时空分布特征.在年、季、月时间尺度上,TRMM降水量具有较高的精度,普遍高于实测值,7月存在低估现象;夏秋季降水精度较高,冬季略差;7-10月精度较高,12月—次年2月精度较差.空间上,TRMM降水量精度随着海拔的降低而增加,在流域中上游TRMM降水量高估,沿海地区略微低估,乐亭站、秦皇岛站存在低估现象.
Abstract
Based on the measured precipitation data of 8 rainfall stations in the Luanhe River Basin from 2003 to 2019,the applicability of TRMM satellite precipitation data in the Luanhe River Basin was evaluated.The results showed that the TRMM precipitation and the measured data had the same annual,temporal and spatial distribution characteristics.On the annual,seasonal and monthly time scales,TRMM precipitation had high accuracy and were generally higher than the measured value,and there was an underestimation in July.The precipitation accuracy was higher in summer and autumn,and slightly worse in winter.The accuracy was higher from July to October,and worse from December to February of the following year.As to the spatial distribution,the accuracy of TRMM precipitation increased with the decrease of altitude.It was overestimated in the upper and middle reaches of the basin,and slightly underestimated in the coastal areas.There were underestimation phenomena at Laoting Station and Qinhuangdao Station.
关键词
TRMM/降水量/精度评估/滦河流域Key words
TRMM/precipitation/accuracy evaluation/Luanhe River Basin引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据