XU Dong,ZOU Jin,LU Ying,et al.Evaluation on Applicability of TRMM Satellite Precipitation Product in the NuJiang River Basin[J].Research of Soil and Water Conservation,2019,26(01):240-244,251.
TRMM卫星降水数据在怒江流域的适用性分析
- Title:
- Evaluation on Applicability of TRMM Satellite Precipitation Product in the NuJiang River Basin
- 关键词:
- 降水; TRMM 3B43 Version7; 适用性分析; 怒江流域
- 分类号:
- TP79
- 摘要:
- 利用怒江流域12个气象站点1998-2012年的实测降水数据，采用散点斜率法和相关系数法，在不同的时空尺度上分析了TRMM 3B43 V7卫星降水数据在怒江流域的适用性。研究表明：月尺度上，TRMM降水数据与站点实测降水数据的相关系数R值为0.81，两者之间相关性显著；季节尺度上，夏季降水的相关性（R=0.74）高于其余3个季节，冬季降水的相关性最差（R=0.63）；站点尺度上，上游和下游站点的相关系数均大于0.9，相对误差较大的站点主要分布在流域中游。总体上来看，TRMM 3B43 V7月降水数据与怒江流域站点实测数据间的一致性，呈现出上、下游地势相对开阔平坦处相关性较好，而中游地形变化剧烈，坡度较大的峡谷区相关性较差的特点。
- Abstract:
- The applicability of TRMM 3B43 V7 satellite precipitation data in Nujiang River Basin was analyzed by using scatter slope method and correlation coefficient method based on the measured precipitation data from 12 meteorological stations in Nujiang River Basin at different space-time scales. The results showed that the correlation coefficient R value of TRMM precipitation data and site measured precipitation data was 0.81,and the correlations between them were significant; on the seasonal scale,the correlation (R=0.74) of summer precipitation was higher than the other 3 seasons,the relativity of winter precipitation was the poorest (R=0.63); on the site scale,upstream and downstream sites of the correlation coefficient was greater than 0.9, relatively large sites mainly distributed in the middle of the river basin. On the whole, the consistency between the TRMM 3B43 V7 monthly precipitation data and the measured data of the Nujiang River basin site showed that the correlation between the upper and lower topography was relatively open and flat, while the terrain of the middle reaches was diverse, and the canyon area with greater slopewas less relevant.
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备注/Memo
收稿日期:2018-1-18;改回日期:2018-3-2。
基金项目:国家重点研发计划资助项目（2016YFA0601601）；云南省自然科学研究重点项目（2017FA021）；国家自然科学基金（51469009）
作者简介:徐东(1992-),男,云南玉溪人,硕士生,研究方向为:水资源系统分析与可持续利用。E-mail:2542446287@qq.com
通讯作者:潘锋(1980-),男,江苏泰州人,博士,主要研究领域:水文学及水资源。E-mail:panfeng@kmust.edu.cn