| TRMM3B42降雨数据在渭河流域的应用分析 |
| |
| 引用本文： | 赵海根,杨胜天,周旭,王志伟,吴琳娜.TRMM3B42降雨数据在渭河流域的应用分析[J].水文,2015,35(1):61-67. |
| |
| 作者姓名： | 赵海根 杨胜天 周旭 王志伟 吴琳娜 |
| |
| 作者单位： | 北京师范大学地理学与遥感科学学院,遥感科学国家重点实验室,环境遥感与数字城市北京市重点实验室;西华师范大学国土资源学院 |
| |
| 摘 要： | 运用渭河流域24个气象站点日降雨数据对2001~2012年热带测雨卫星(TRMM)3B42数据在不同子流域、不同降雨强度以及不同时间尺度的精度进行了对比验证,并对比分析了基于TRMM和站点数据的渭河流域降雨时空分布特征。结果显示:在不同子流域的日TRMM数据比站点观测数据对低值降雨更为敏感,而在极大值降雨数据观测上两者差距较大,月尺度TRMM站点观测数据确定性系数在0.89到0.96之间;两种数据在流域降雨的时空分布上表现一致性,在年内6月中旬~10月初为湿润多雨期,其余月份降雨较少,空间分布呈东南部大,西北部小的格局。
|
| 关 键 词： | 渭河流域 TRMM 降雨 精度验证 时空分布 |
| 收稿时间： | 2014/1/3 0:00:00 |
Application Analysis of TRMM 3B42 Precipitation Data in Weihe River Basin |
| |
| ZHAO Haigen,YANG Shengtian,ZHOU Xu,WANG Zhiwei,WU Lingna.Application Analysis of TRMM 3B42 Precipitation Data in Weihe River Basin[J].Hydrology,2015,35(1):61-67. |
| |
| Authors: | ZHAO Haigen YANG Shengtian ZHOU Xu WANG Zhiwei WU Lingna |
| |
| Institution: | ZHAO Haigen;YANG Shengtian;ZHOU Xu;WANG Zhiwei;WU Lingna;School of Geography, State Key Laboratory of Remote Sensing Science, Beijing Key Laboratory of Remote Sensing of Environment and Digital Cities, Beijing Normal University;School of Land and Resource, China West Normal University; |
| |
| Abstract: | The study used the data from 24 rain gauge stations in the Weihe River Basin to validate the accuracy of Tropical Rainfall Measuring Mission (TRMM) 3B42 precipitation product data over the period during 2001-2012 at different sub-basins, different rain intensities and different time scales, and analyzed the differences of temporal and spatial distribution characteristics of TRMM and the observed data in the Weihe River Basin. The results show that the daily TRMM data are more sensitive to lower rainfall values than the observed rainfall values and larger differences existing for extreme values in different sub-basins. The determination coefficients are from 0.89 to 0.96 between TRMM data and the ob - served data at monthly scale. The distributions in year for the two kinds of data are similar in the Weihe River Basin, from July to early October is humid and rainy period and there are less rainfalls in other months; comparing to the northwest in the basin, there is more rainfall in the southeast for the two kinds of data. |
| |
| Keywords: | Weihe River Basin TRMM precipitation accuracy validation temporal and spatial distribution |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《水文》浏览原始摘要信息 |
| 点击此处可从《水文》下载免费的PDF全文 |
|
