干旱区生态环境知识资源中心(Arid): Impact of Topography and Rainfall Intensity on the Accuracy of IMERG Precipitation Estimates in an Arid Region

Arid

DOI	10.3390/rs13010013
	Impact of Topography and Rainfall Intensity on the Accuracy of IMERG Precipitation Estimates in an Arid Region
	Mahmoud, Mohammed T.; Mohammed, Safa A.; Hamouda, Mohamed A.; Mohamed, Mohamed M.
通讯作者	Hamouda, MA (corresponding author), United Arab Emirates Univ, Dept Civil & Environm Engn, Al Ain 15551, U Arab Emirates. ; Hamouda, MA (corresponding author), UAE Univ, Natl Water Ctr, Al Ain 15551, U Arab Emirates.
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2021
卷号	13 期号:1
英文摘要	The influence of topographical characteristics and rainfall intensity on the accuracy of satellite precipitation estimates is of importance to the adoption of satellite data for hydrological applications. This study evaluates the three GPM IMERG V05B products over the arid country of Saudi Arabia. Statistical indices quantifying the performance of IMERG products were calculated under three evaluation techniques: seasonal-based, topographical, and rainfall intensity-based. Results indicated that IMERG products have the capability to detect seasons with the highest precipitation values (spring) and seasons with the lowest precipitation (summer). Moreover, results showed that IMERG products performed well under various rainfall intensities, particularly under light rain, which is the most common rainfall in arid regions. Furthermore, IMERG products exhibited high detection accuracy over moderate elevations, whereas it had poor performance over coastal and mountainous regions. Overall, the results confirmed that the performance of the final-run product surpassed the near-real-time products in terms of consistency and errors. IMERG products can improve temporal resolution and play a significant role in filling data gaps in poorly gauged regions. However, due to the errors in IMERG products, it is recommended to use sub-daily rain gauge data in satellite calibration for better rainfall estimation over arid and semiarid regions.
英文关键词	satellite-based precipitation products GPM IMERG Saudi Arabia
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000606289500001
WOS关键词	GPM IMERG ; SAUDI-ARABIA ; PRODUCTS ; TMPA ; 3B42
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/348129
作者单位	[Mahmoud, Mohammed T.; Mohammed, Safa A.; Hamouda, Mohamed A.; Mohamed, Mohamed M.] United Arab Emirates Univ, Dept Civil & Environm Engn, Al Ain 15551, U Arab Emirates; [Mahmoud, Mohammed T.] Univ Khartoum, Civil Engn Dept, Khartoum 11111, Sudan; [Hamouda, Mohamed A.; Mohamed, Mohamed M.] UAE Univ, Natl Water Ctr, Al Ain 15551, U Arab Emirates
推荐引用方式 GB/T 7714	Mahmoud, Mohammed T.,Mohammed, Safa A.,Hamouda, Mohamed A.,et al. Impact of Topography and Rainfall Intensity on the Accuracy of IMERG Precipitation Estimates in an Arid Region[J],2021,13(1).
APA	Mahmoud, Mohammed T.,Mohammed, Safa A.,Hamouda, Mohamed A.,&Mohamed, Mohamed M..(2021).Impact of Topography and Rainfall Intensity on the Accuracy of IMERG Precipitation Estimates in an Arid Region.REMOTE SENSING,13(1).
MLA	Mahmoud, Mohammed T.,et al."Impact of Topography and Rainfall Intensity on the Accuracy of IMERG Precipitation Estimates in an Arid Region".REMOTE SENSING 13.1(2021).