DOI: 10.1016/j.atmosres.2018.12.029
Scopus记录号: 2-s2.0-85059701112
论文题名: Spatiotemporal evaluation of the GPM satellite precipitation products over the United Arab Emirates
作者: Mahmoud M.T. ; Hamouda M.A. ; Mohamed M.M.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2019
卷: 219 起始页码: 200
结束页码: 212
语种: 英语
英文关键词: GPM
; IMERG
; Satellite precipitation products
; UAE
Scopus关键词: Arid regions
; Error detection
; Rain
; Rain gages
; Soil moisture
; Water management
; Arid and semi-arid regions
; Continuous monitoring
; Efficient managements
; Global precipitation measurements
; IMERG
; Precipitation measurement
; Satellite precipitation products
; Spatial and temporal variation
; Satellites
; algorithm
; measurement method
; precipitation intensity
; rainfall
; satellite data
; spatial variation
; spatiotemporal analysis
; temporal variation
; United Arab Emirates
英文摘要: The accurate measurement of rainfall intensity is always challenging due to high spatial and temporal variation of the precipitation, particularly on arid and semiarid regions. The United Arab Emirates (UAE) lies in an arid region with a high shortage of rainfall events. Thus, accurate and continuous monitoring for efficient management of water resources is of particular importance. There are many techniques and instruments that were developed for collecting and/or estimating precipitation. Recently, multi-satellite sensors were globally utilized over the past three decades to measure the precipitation. The Global Precipitation Measurement (GPM) satellite has a capability to detect and measure all types of precipitation using advanced instruments. This article validates the accuracy of the GPM IMERG (Integrated Multi-satellitE Retrievals from Global Precipitation Measurement) early, late and final rainfall products over the UAE using multiple spatial and temporal assessments over the period from Jan 2015 to Dec 2017. The IMERG early-run-product showed a good detection accuracy and low estimation error over the UAE except for the eastern part, while the late-run-product showed a slight improvement. The final-run-product showed the highest detection and low estimation error compared to other products. The correlation between rain-gauge and satellite data demonstrated a contradiction, which reveals that the early-run-product had the highest correlation. Nevertheless, the correlation with the final-run-product was quite lower than the early-run-product. Based on these results, the GPM IMERG final-run-product provides not only a better understanding of the rainfall variability and pattern over the UAE, but also could serve as a reliable product to complementing and/or substituting ground precipitation measurements for ungauged or poorly gauged regions. This paper presents results of one of the earliest assessments of the GPM IMERG products in the Middle East. The outcomes could pave the road for further improvement of the IMERG algorithms in the future. © 2019 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122312
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Civil and Environmental Engineering, United Arab Emirates University, Al Ain, Abu Dhabi, United Arab Emirates; Department of Civil Engineering, University of Khartoum, Khartoum, Sudan; National Water Center, United Arab Emirates University, Al Ain, Abu Dhabi, United Arab Emirates
Recommended Citation:
Mahmoud M.T.,Hamouda M.A.,Mohamed M.M.. Spatiotemporal evaluation of the GPM satellite precipitation products over the United Arab Emirates[J]. Atmospheric Research,2019-01-01,219