Evaluation of Global Gridded Precipitation and Temperature Datasets against Gauged Observations over the Upper Tekeze River Basin, Ethiopia

doi:10.1007/s13351-021-0199-7

	Evaluation of Global Gridded Precipitation and Temperature Datasets against Gauged Observations over the Upper Tekeze River Basin, Ethiopia
	Reda, Kidane Welde 1,2,3; Liu, Xingcai 2; Tang, Qiuhong 1,2; Gebremicael, Tesfay Gebretsadkan 3
刊名	JOURNAL OF METEOROLOGICAL RESEARCH
	2021-08-01
卷号	35 期号:4 页码:673-689
关键词	climatic datasets evaluation rainfall temperature Tekeze River basin
ISSN号	2095-6037
DOI	10.1007/s13351-021-0199-7
通讯作者	Liu, Xingcai(xingcailiu@igsnrr.ac.cn)
英文摘要	The availability of satellite and reanalysis climate datasets and their applicability have been greatly promoted in hydro-climatic studies. However, such climatic products are still subject to considerable uncertainties and an evaluation of the products is necessary for applications in specific regions. This study aims to evaluate the reliability of nine gridded precipitation and temperature datasets against ground-based observations in the upper Tekeze River basin (UTB) of Ethiopia from 1982 to 2016. Precipitation, maximum temperature (T-max), minimum temperature (T-min), and mean temperature (T-mean) were evaluated at daily and monthly timescales. The results show that the best estimates of precipitation are from the EartH2Observe, WFDEI, and ERA-Interim reanalysis data Merged and Bias-corrected for the Inter-Sectoral Impact Model Intercomparison Project (EWEMBI), and the Climate Hazards Group InfraRed Precipitation with Station data (CHIRPS) datasets. The percentage biases and correlation coefficients (CCs) are within +/- 15% and > 0.5, respectively, for both EWEMBI and CHIRPS at the two timescales. All products underestimate the drought conditions indicated by the standardized precipitation index (SPI), while the EWEMBI and CHIRPS datasets show higher agreement with the observations than other datasets. The T-mean estimates produced by the ECMWF Re-Analysis version 5 (ERA5) and the Climate Hazards Group InfraRed Temperature with Station data (CHIRTS) are the closest to the observations, with CCs of 0.65 and 0.55, respectively, at the daily timescale. The CHIRTS and EWEMBI datasets show better representations of T-max (T-min), with CCs of 0.69 (0.72) and 0.62 (0.68), respectively, at the monthly timescale. The temperature extremes are better captured by the ERA5 (T-mean), CHIRTS (T-max), and EWEMBI (T-min) datasets. The findings of this study provide useful information to select the most appropriate dataset for hydrometeorological studies in the UTB and could help to improve the regional representation of global datasets.
资助项目	National Natural Science Foundation of China[41790424] ; National Natural Science Foundation of China[41730645] ; National Natural Science Foundation of China[41877164] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA20060402] ; International Partnership Program of the Chinese Academy of Sciences[131A11KYSB20170113]
WOS关键词	SATELLITE RAINFALL PRODUCTS ; TRMM 3B42 ; REANALYSIS ; DROUGHT ; SIMULATION ; CATCHMENT ; LAND ; ERROR ; MODEL ; IMERG
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000695144600010
资助机构	National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; International Partnership Program of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/165543]
专题	中国科学院地理科学与资源研究所
通讯作者	Liu, Xingcai
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Key Lab Water Cycle & Related Land Surface Proc, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 3.Tigray Agr Res Inst, Mekelle 492, Ethiopia
推荐引用方式 GB/T 7714	Reda, Kidane Welde,Liu, Xingcai,Tang, Qiuhong,et al. Evaluation of Global Gridded Precipitation and Temperature Datasets against Gauged Observations over the Upper Tekeze River Basin, Ethiopia[J]. JOURNAL OF METEOROLOGICAL RESEARCH,2021,35(4):673-689.
APA	Reda, Kidane Welde,Liu, Xingcai,Tang, Qiuhong,&Gebremicael, Tesfay Gebretsadkan.(2021).Evaluation of Global Gridded Precipitation and Temperature Datasets against Gauged Observations over the Upper Tekeze River Basin, Ethiopia.JOURNAL OF METEOROLOGICAL RESEARCH,35(4),673-689.
MLA	Reda, Kidane Welde,et al."Evaluation of Global Gridded Precipitation and Temperature Datasets against Gauged Observations over the Upper Tekeze River Basin, Ethiopia".JOURNAL OF METEOROLOGICAL RESEARCH 35.4(2021):673-689.