Version 1
: Received: 19 October 2023 / Approved: 20 October 2023 / Online: 20 October 2023 (10:30:19 CEST)
How to cite:
Berhane, A.; Tesfay, T. Seasonal and Inter-Annual Variability in Extreme Temperature and Rainfall Indices in the Semi-Arid Areas of Northern Ethiopia. Preprints2023, 2023101330. https://doi.org/10.20944/preprints202310.1330.v1
Berhane, A.; Tesfay, T. Seasonal and Inter-Annual Variability in Extreme Temperature and Rainfall Indices in the Semi-Arid Areas of Northern Ethiopia. Preprints 2023, 2023101330. https://doi.org/10.20944/preprints202310.1330.v1
Berhane, A.; Tesfay, T. Seasonal and Inter-Annual Variability in Extreme Temperature and Rainfall Indices in the Semi-Arid Areas of Northern Ethiopia. Preprints2023, 2023101330. https://doi.org/10.20944/preprints202310.1330.v1
APA Style
Berhane, A., & Tesfay, T. (2023). Seasonal and Inter-Annual Variability in Extreme Temperature and Rainfall Indices in the Semi-Arid Areas of Northern Ethiopia. Preprints. https://doi.org/10.20944/preprints202310.1330.v1
Chicago/Turabian Style
Berhane, A. and Teklay Tesfay. 2023 "Seasonal and Inter-Annual Variability in Extreme Temperature and Rainfall Indices in the Semi-Arid Areas of Northern Ethiopia" Preprints. https://doi.org/10.20944/preprints202310.1330.v1
Abstract
Ethiopia has been known for its recurrent droughts and poverty due to extreme climate change and variability affecting agricultural production. This study was, therefore, conducted to analyze the seasonal and inter-annual variability in rainfall and temperature v over the past three decades in western Tigray. The study consisted of 34 years of temperature and rainfall data from nine stations in two administrative zones in the western part of Tigray. The climate data was obtained from the National Aeronautic Space Administration (NASA) from 1983 to 2016. Total rainfall, simple daily intensity index, Rx1day and Rx5day, and maximum and minimum temperature, tropical nights, diurnal temperature range, cold spell and warm spell duration indicator values, cold days and cold nights, warm days, and warm nights were analyzed. RClimDex software was employed to analyze the trends and quality control of the extreme rainfall and temperature indices; in addition, the Mann-Kendall test was also used to detect the changes and variability of the variables. The trend analysis showed that there was significant (p<0.05) variability in extreme temperatures, with maximum and minimum temperatures varying from 0.04 to 0.051 0C, and 0.022 to 0.031 0C, respectively. The results also revealed that there was a negative trend in extreme rainfall, with no uniform pattern. The highest and smallest reduction in the annual rainfall was 14.6 mm and 8.4 mm, which were observed at Maygaba and Adigoshu, respectively. More than 60% of the total rainfall was received in July and August throughout the study areas, with the maximum monthly rainfall of 294.2 mm observed at Adiremets. Finally, this study demonstrated that areas in the northwestern and western zones of Tigray were significantly affected by extreme rainfall and temperature variability, which subsequently affected crop yield, natural resources, food security, and the livelihood of the community during the last three decades.
Environmental and Earth Sciences, Atmospheric Science and Meteorology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
