Comparison of two successive versions 6 and 7 of TMPA satellite precipitation products with rain gauge data over Swat Watershed, Hindukush Mountains, Pakistan

被引：28

作者：

Anjum, Muhammad Naveed ^{[1
,2
,3
]}

Ding, Yongjian ^{[1
,2
]}

Shangguan, Donghui ^{[1
]}

Tahir, Adnan Ahmad ^{[4
,5
]}

Iqbal, Mudassar ^{[6
]}

Adnan, Muhammad ^{[1
]}

机构：

[1] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Cryospher Sci, 320 Donggang West Rd, Lanzhou 730000, Gansu, Peoples R China

[2] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Inland River Ecohydrol, Lanzhou, Peoples R China

[3] Univ Chinese Acad Sci, Beijing, Peoples R China

[4] Univ Lausanne, Fac Geosci & Environm, Inst Earth Surface Dynam, Lausanne, Switzerland

[5] COMSATS Inst Informat Technol, Dept Environm Sci, Abbottabad, Pakistan

[6] Chinese Acad Sci, Cold & Arid Reg Environm & Engn, Key Lab Land Surface Proc & Climate Change Cold A, Lanzhou, Peoples R China

来源：

ATMOSPHERIC SCIENCE LETTERS | 2016年 / 17卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Swat Watershed; Hindukush Mountains; satellite precipitation; bias correction; TRMM; BASINS;

D O I：

10.1002/asl.654

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Swat watershed in Hindukush Mountains was selected for the evaluation of Tropical Rainfall Measuring Mission (TRMM) Multi-satellite Precipitation Analysis (TMPA) Versions 6 and 7 using rain-gauge data. Agreement between the satellite and gauge estimates was good at monthly scale but poor at daily and seasonal (monsoon and westerlies, particularly for monsoon) scales. Over and underestimations were observed at foothills and high-altitude areas, respectively. Although, bias was still present, but overall performance of TMPA-V7 was improved compared with TMPA-V6. Bias corrected-TMPA-V7 estimates were better than corrected-TMPA-V6. Basin average bias-corrected precipitation estimates of TMPA-V7 were estimated at daily, monthly, westerlies, monsoon, and annual scales [means (mm) 1.60, 48, 190, 173 and 582, respectively] for the period 1998-2014. Results suggest that regional bias correction of satellite-precipitation products is critical and can yield to the substantial improvement in capturing the precipitation.

引用

页码：270 / 279

页数：10

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