Assessment of IMERG-V06 Precipitation Product over Different Hydro-Climatic Regimes in the Tianshan Mountains, North-Western China

被引：45

作者：

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

Ahmad, Ijaz ^{[3
]}

Ding, Yongjian ^{[1
,2
]}

Shangguan, Donghui ^{[1
]}

Zaman, Muhammad ^{[4
]}

Ijaz, Muhammad Wajid ^{[5
]}

Sarwar, Kaleem ^{[3
]}

Han, Haidong ^{[1
]}

Yang, Min ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Gansu, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Univ Engn & Technol, Ctr Excellence Water Resources Engn, Lahore 54890, Pakistan

[4] Univ Agr Faisalabad, Dept Irrigat & Drainage, Faisalabad 38000, Pakistan

[5] Environm Protect Agcy, Lahore 54000, Punjab, Pakistan

来源：

REMOTE SENSING | 2019年 / 11卷 / 19期

基金：

中国国家自然科学基金;

关键词：

satellite precipitation; GPM; IMERG-V06; TRMM; Tianshan Mountains; performance evaluation; HIGH-RESOLUTION SATELLITE; INTEGRATED MULTISATELLITE RETRIEVALS; TRMM; 3B42; GPM IMERG; HINDUKUSH MOUNTAINS; RAINFALL; PERFORMANCE; BASIN; SIMULATION; XINJIANG;

D O I：

10.3390/rs11192314

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This study presents an assessment of the version-6 (V06) of the Integrated Multi-satellitE Retrievals for Global Precipitation Measurement (IMERG) product from June 2014 to December 2017 over different hydro-climatic regimes in the Tianshan Mountains. The performance of IMERG-V06 was compared with IMERG-V05 and the Tropical Rainfall Measuring Mission (TRMM) 3B42V7 precipitation products. The precipitation products were assessed against gauge-based daily and monthly precipitation observations over the entire spatial domain and five hydro-climatologically distinct sub-regions. Results showed that: (1) The spatiotemporal variability of average daily precipitation over the study domain was well represented by all products. (2) All products showed better correlations with the monthly gauge-based observations than the daily data. Compared to 3B42V7, both IMERG products presented a better agreement with gauge-based observations. (3) The estimation skills of all precipitation products showed significant spatial variations. Overall performance of all precipitation products was better in the Eastern region compared to the Middle and Western regions. (4) Satellite products were able to detect tiny precipitation events, but they were uncertain in capturing light and moderate precipitation events. (5) No significant improvements in the precipitation estimation skill of IMERG-V06 were found as compared to IMERG-V05. We deduce that the IMERG-V06 precipitation detection capability could not outperform the efficiency of IMERG-V05. This comparative evaluation of the research products of Global Precipitation Measurement (GPM) and TRMM products in the Tianshan Mountains is useful for data users and algorithm developers.

引用

页数：23

共 65 条

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