Evaluating the performances of gridded satellite/reanalysis products in representing the rainfall climatology of Ethiopia

IF 3.3 4区地球科学 Q2 ENVIRONMENTAL SCIENCES Geocarto International Pub Date : 2023-11-08 DOI:10.1080/10106049.2023.2278329

Endeg Aniley, Temesgen Gashaw, Tesfalem Abraham, Sintayehu Fetene Demessie, Haimanote Kebede Bayabil, Abeyou W. Worqlul, Pieter R. van Oel, Yihun T. Dile, Abebe Demissie Chukalla, Amare Haileslassie, Gizachew Belay Wubaye

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Abstract

This study evaluated performances of the Climate Hazard Group Infrared Precipitation with stations version 2.0 (CHIRPS v2.0) and Multi-Source Weighted-Ensemble Precipitation version 2.8 (MSWEP v2.8) products against observed data. Rainfall climatology was simulated for different agro-ecological zones (AEZs) of Ethiopia during 1991-2020 at different temporal scales. Performance evaluations were made using continuous and statistical performance measures as well as Probability Density Function (PDF). CHIRPS v2.0 for estimating monthly, seasonal, and annual rainfall totals, and MSWEP v2.8 for daily rainfall have shown better performance over all AEZs. The two products display comparable performance for detecting daily rainfall occurrences over alpine AEZ, but MSWEP v2.8 is superior in the rest four AEZs. CHIRPS v2.0 outperforms MSWEP v2.8 for detecting most of the daily rainfall intensity classes over all AEZs. The findings will play a noteworthy role to improve the quality of hydro-climate studies in Ethiopia.

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评价格网卫星/再分析产品在代表埃塞俄比亚降雨气候学方面的性能

本研究利用实测数据，对气候危害组红外降水(CHIRPS 2.0版)和多源加权集合降水(MSWEP 2.8版)产品的性能进行了评价。对1991—2020年埃塞俄比亚不同农业生态区在不同时间尺度上的降雨气候学进行了模拟。使用连续和统计性能度量以及概率密度函数(PDF)进行性能评估。用于估算月、季和年总降雨量的CHIRPS v2.0和用于估算日降雨量的MSWEP v2.8在所有aez中都显示出更好的性能。这两种产品在检测高山AEZ上的日降雨量方面表现相当，但MSWEP v2.8在其余四个AEZ上表现更好。CHIRPS v2.0在检测所有aez的大多数日降雨强度等级方面优于MSWEP v2.8。这些发现将对提高埃塞俄比亚水文气候研究的质量发挥重要作用。

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来源期刊

Geocarto International ENVIRONMENTAL SCIENCES-GEOSCIENCES, MULTIDISCIPLINARY

CiteScore

6.30

自引率

13.20%

发文量

407

审稿时长

>12 weeks

期刊介绍： Geocarto International is a professional academic journal serving the world-wide scientific and user community in the fields of remote sensing, GIS, geoscience and environmental sciences. The journal is designed: to promote multidisciplinary research in and application of remote sensing and GIS in geosciences and environmental sciences; to enhance international exchange of information on new developments and applications in the field of remote sensing and GIS and related disciplines; to foster interest in and understanding of science and applications on remote sensing and GIS technologies; and to encourage the publication of timely papers and research results on remote sensing and GIS applications in geosciences and environmental sciences from the world-wide science community. The journal welcomes contributions on the following: precise, illustrated papers on new developments, technologies and applications of remote sensing; research results in remote sensing, GISciences and related disciplines; Reports on new and innovative applications and projects in these areas; and assessment and evaluation of new remote sensing and GIS equipment, software and hardware.