We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Geospatial variabilities and trends in extreme agroclimatic indicators in the Jimma Zone, Southwest Ethiopia.
- Authors
Chalchissa, Fedhasa Benti; Diga, Girma Mamo; Feyisa, Gudina Legese; Tolossa, Alemayehu Regassa
- Abstract
Floods, droughts, and heat waves are becoming more common in Ethiopia, causing damage to the country's rain-fed agricultural productivity. The objective of the study was to investigate the patterns and variability of extreme agroclimatic indicators in the Jimma zone. Raw data of daily rainfall temperatures from ten weather stations recorded between 1991 and 2020 were processed using the Climate Impact version 2 (ClimPact2) tool to extract extreme agroclimatic indicators. A regression model and descriptive statistics were used to examine the spatial and time-series patterns of the 12 significant extreme agroclimatic indicators that were selected from a total of 27. The geographical distribution of the variables was interpolated using inverse distance weighted (IDW) in ArcMap. The results show that the coefficient of variation for the number of consecutive dry days and the number of days with heavy rain, very heavy rain, and extremely heavy rain is greater than 30%. The annual mean number of consecutive dry days was 35 days per year, with a 44% coefficient of variation. The minimum and maximum values of the indicators were recorded at Gera (11 days per year) and Omo-Nada (77 days per year), respectively. The total annual average rainfall was extremely heavy (248.28 mm) and very heavy (59.80 mm), with very high coefficients of variation of 45 and 62%, respectively. The eastern portion of the research area was impacted mostly by the coldest day temperatures, the warmest day temperatures, and consecutive dry days. The number of cool nights and cool days both dropped significantly at all stations, while the number of warm nights, cold (TXn), and warm (TXx) daytime temperatures over the study area. There is no dispute regarding the socioeconomic effects of climate variability and change, which are increasingly being detected to harm residents because of a significant increase in agroclimatic extreme events. It is suggested that studies on the impacts of agroclimatic indicators on agriculture be conducted.
- Subjects
ETHIOPIA; RAINFALL; METEOROLOGICAL stations; HEAT waves (Meteorology); COLD (Temperature); AGRICULTURAL productivity; CLIMATE extremes; FLOOD damage
- Publication
Theoretical & Applied Climatology, 2024, Vol 155, Issue 1, p229
- ISSN
0177-798X
- Publication type
Article
- DOI
10.1007/s00704-023-04630-x