干旱区生态环境知识资源中心(Arid): Evaluation of IMERG precipitation product over various temporal scales in a semi-arid region of southern Iran

Arid

DOI	10.1016/j.jaridenv.2023.105102
	Evaluation of IMERG precipitation product over various temporal scales in a semi-arid region of southern Iran
	Shabankareh, Rahim Najafi Tireh; Ziaee, Pardis; Abedini, Mohammad Javad
通讯作者	Abedini, MJ
来源期刊	JOURNAL OF ARID ENVIRONMENTS
ISSN	0140-1963
EISSN	1095-922X
出版年	2024
卷号	220
英文摘要	In the recent decades, poor spatial coverage of rain gauges and weather radars, mostly in less developed countries, has caused satellite-based precipitation products to gain more popularity. However, they are considered less precise compared to traditional rain gauges and weather radars. Therefore, their thorough evaluations are essential before implementing these products in practice. In this study, IMERG satellite-based precipitation product was evaluated in the Fars province, Iran, using daily rain gauges as reference data to find the relationships between the uncertainties in the product and various factors such as elevation, tempera-ture, and rainfall intensity by employing continuous and categorical statistical metrics. The findings revealed that: a) The IMERG product overestimates light rainfall and underestimates heavy rainfall, while showing the best performance in the range 40-80 mm/day. b) The accuracy of the product tends to vary in different months of the year and it is less biased in ones with milder temperatures. c) Higher correlation in mid-elevated areas (up to 0.96), positive bias in low-elevated areas (up to 2.5) and negative bias in high-elevated areas (down to-0.4) were observed. d) A considerable improvement in the IMERG estimates was observed for longer time scales for almost all validation indices. Overall, IMERG products show potential for hydrological and atmospheric decision -making, but further improvements in retrieval algorithms and developing local correction models, considering the trends found in this study, are needed for increased reliability.
英文关键词	Fars province IMERG evaluation Integrated Multi-SatellitE retrievals for global precipitation measurement (IMERG) Precipitation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001123540500001
WOS关键词	ANALYSIS TMPA ; TRMM ; SATELLITE ; RAINFALL ; PERFORMANCE ; PERSIANN ; PROVINCE ; ERROR ; RADAR ; BASIN
WOS类目	Ecology ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404338
推荐引用方式 GB/T 7714	Shabankareh, Rahim Najafi Tireh,Ziaee, Pardis,Abedini, Mohammad Javad. Evaluation of IMERG precipitation product over various temporal scales in a semi-arid region of southern Iran[J],2024,220.
APA	Shabankareh, Rahim Najafi Tireh,Ziaee, Pardis,&Abedini, Mohammad Javad.(2024).Evaluation of IMERG precipitation product over various temporal scales in a semi-arid region of southern Iran.JOURNAL OF ARID ENVIRONMENTS,220.
MLA	Shabankareh, Rahim Najafi Tireh,et al."Evaluation of IMERG precipitation product over various temporal scales in a semi-arid region of southern Iran".JOURNAL OF ARID ENVIRONMENTS 220(2024).