Application of GIS using NDVI and LST estimation to measure climate variability-induced drought risk assessment in Ethiopia

Author:

Gelata Fikiru Temesgen12ORCID,Jiqin Han1,Chaka Gemeda Samerawit34,Wubishet Asefa Birhan4

Affiliation:

1. a College of Economics and Management, Nanjing Agricultural University, 210095, Nanjing, Jiangsu, China

2. b Department of Agribusiness and Value Chain Management, Ambo University, 19, Ambo, Ethiopia

3. c Department of Agricultural Economics, Ambo University, 19, Ambo, Ethiopia

4. d Pan African University of Water and Energy Science, including climate change (PAUWES), Tlemcen, Algeria

Abstract

Abstract The contribution of this paper is to assess the drought patterns using the Land Surface Temperature (LST) estimation index and examine the correlation between the Normalized Difference Vegetation Index (NDVI). The main objective was to evaluate the spatiotemporal variation in agricultural drought patterns and severity in order to estimate and measure climate variability. According to the study's findings, the region experienced mild to severe meteorological drought periods 15–18 times over the study period. The majority of these periods (62.72%) were classified as mild drought (unusual dry circumstances), which usually only showed a slight departure from the distribution of rainfall that is close to normal. According to the findings, cropping seasons from 2013 to 2022 saw an increase in agricultural dryness and a decrease in grain yield, with varying degrees of severity in different geographic locations. Based on the result, the major difficulties and challenges identified were the shortage of drinking water, and impacts on air quality, and food and nutrition. Accordingly, agricultural drought risk mapping can be utilized to mitigate the risk associated with drought on agricultural productivity and guide decision-making processes in drought monitoring.

Publisher

IWA Publishing

Subject

Management, Monitoring, Policy and Law,Atmospheric Science,Water Science and Technology,Global and Planetary Change

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