TRMM 3B43降水数据在黄河源区的适用性评价

被引：31

作者：

李琼 ^{[1
,2
]}

杨梅学 ^{[1
]}

万国宁 ^{[1
]}

王学佳 ^{[1
]}

机构：

[1] 中国科学院寒区旱区环境与工程研究所冰冻圈科学国家重点实验室

[2] 中国科学院大学

来源：

冰川冻土 | 2016年 / 38卷 / 03期

关键词：

TRMM 3B43; 黄河源; 降水; 精度评价;

D O I：

暂无

中图分类号：

P426.6 [降水];

学科分类号：

摘要：

应用1998-2013年气象台站实测的降水数据以及2013年6-9月使用雨量桶收集的数据对TRMM 3B43 V7降水数据在黄河源区的精度从不同时间尺度、不同台站、以及不同海拔、坡度和坡向进行评价.检验发现,TRMM 3B43数据对年和四季降水出现了不同程度的高估或低估,对于年降水、秋冬季降水表现为高估,而对春夏季降水表现为低估.同时,TRMM 3B43数据在位于半湿润区的气象站点的降水数据质量优于半干旱区的气象站点的数据质量.除此以外,对TRMM降水在不同海拔、坡度和坡向的精度评估发现,随着海拔的升高,TRMM降水的相对偏差呈现出增加-减少-增加的变化趋势;随着坡度的升高,TRMM降水的相对偏差呈增加趋势;TRMM降水在东北坡、东坡和东南坡的偏差相对较小,而在西坡、南坡、北坡、西南坡的偏差相对较大.

引用

页码：620 / 633

页数：14

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