Local spatiotemporal variability and trends in rainfall and temperature in the central highlands of Ethiopia

Alemayehu, Arragaw; Bewket, Woldeamlak

doi:10.1080/04353676.2017.1289460

Cited by 82 publications

(81 citation statements)

References 21 publications

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“…Moreover, Fenta et al [61] also did not observe a monotonic trend in rainfall time series data in Ethiopia, and Teshome [62] found an increasing temperature trend in the Dembia District in the Upper Blue Nile basin. Furthermore, our findings are in line with other similar studies, which revealed observed trend changes in the Ethiopian highlands and elsewhere, with a mean annual temperature increase range between 0.028 • C and 1.65 • C from 1955 to 2016 [63,64]. In contrast, Samy et al [65] reported a significant decreasing trend in rainfall in the southwestern part of the Upper Blue Nile basin.…”

Section: Exposuresupporting

confidence: 92%

Communities’ Livelihood Vulnerability to Climate Variability in Ethiopia

et al. 2019

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Ethiopia has experienced more than 10 major drought episodes since the 1970s. Evidence has shown that climate change exacerbates the situation and presents a daunting challenge to predominantly rain-fed agricultural livelihoods. The aim of this study was to analyze the extent and sources of smallholder famers’ livelihood vulnerability to climate change/variability in the Upper Blue Nile basin. We conducted a household survey (n = 391) across three distinct agroecological communities and a formative composite index of livelihood vulnerability (LVI) was constructed. The Mann–Kendall test and the standard precipitation index (SPI) were employed to analyze trends of rainfall, temperature, and drought prevalence for the period from 1982 to 2016. The communities across watersheds showed a relative difference in the overall livelihood vulnerability index. Aba Gerima (midland) was found to be more vulnerable, with a score of 0.37, while Guder (highland) had a relatively lower LVI with a 0.34 index score. Given similar exposure to climate variability and drought episodes, communities’ livelihood vulnerability was mainly attributed to their low adaptive capacity and higher sensitivity indicators. Adaptive capacity was largely constrained by a lack of participation in community-based organizations and a lack of income diversification. This study will have practical implications for policy development in heterogeneous agroecological regions for sustainable livelihood development and climate change adaptation programs.

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Section: Exposuresupporting

confidence: 92%

Communities’ Livelihood Vulnerability to Climate Variability in Ethiopia

et al. 2019

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“…The irrigation infrastructure periods. Similarly, no significant trend in annual rainfall has been reported in a number of studies for some stations in the Awash River Basin [14,[17][18][19]. On the other hand, Rosell [20] found an increasing trend in annual rainfall in six out of the seven stations in the Awash River Basin; whereas, Bekele et al [18] and Asfaw et al [21] reported a significant decreasing trend in annual rainfall over some stations in the basin.…”

Section: Introductionmentioning

confidence: 90%

“…Linear regression is severely affected by outliers, missing data, and the starting and ending values of the time series [22][23][24]. However, linear regression based on ordinary least square (OLS)-based has been used for trend analysis in a number of studies [1,14,15,17,19,[25][26][27][28]. For the non-parametric tests, no assumption is made about the distribution of the population.…”

Section: Introductionmentioning

confidence: 99%

“…There are few studies for the entire or parts of the basin. Some station-based climatic trend studies have included few locations from the Awash River Basin [14,17,[19][20][21]. While only a few of these studies have included significant parts of the basin or the entire basin [1,15,18,31].…”

Section: Introductionmentioning

confidence: 99%

“…Obviously, this is very low data intensity to represent a 116,374 square-km basin with diverse climatological zones. Secondly, most of the studies are based on data analysis at point-scale or arbitrarily defined areas [14,[17][18][19][20]31]. Cheung et al [1] also identified these problems over a number of publications.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of Long-Term Trends of Annual and Seasonal Rainfall in the Awash River Basin, Ethiopia

Mulugeta

Fedler

Ayana

2019

Water

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With climate change prevailing around the world, understanding the changes in long-term annual and seasonal rainfall at local scales is very important in planning for required adaptation measures. This is especially true for areas such as the Awash River basin where there is very high dependence on rain- fed agriculture characterized by frequent droughts and subsequent famines. The aim of the study is to analyze long-term trends of annual and seasonal rainfall in the Awash River Basin, Ethiopia. Monthly rainfall data extracted from Climatic Research Unit (CRU 4.01) dataset for 54 grid points representing the entire basin were aggregated to find the respective areal annual and seasonal rainfall time series for the entire basin and its seven sub-basins. The Mann-Kendall (MK) test and Sen Slope estimator were applied to the time series for detecting the trends and for estimating the rate of change, respectively. The Statistical software package R version 3.5.2 was used for data extraction, data analyses, and plotting. Geographic information system (GIS) package was also used for grid making, site selection, and mapping. The results showed that no significant trend (at α = 0.05) was identified in annual rainfall in all sub-basins and over the entire basin in the period (1902 to 2016). However, the results for seasonal rainfall are mixed across the study areas. The summer rainfall (June through September) showed significant decreasing trend (at α ≤ 0.1) over five of the seven sub-basins at a rate varying from 4 to 7.4 mm per decade but it showed no trend over the two sub-basins. The autumn rainfall (October through January) showed no significant trends over four of the seven sub-basins but showed increasing trends over three sub-basins at a rate varying from 2 to 5 mm per decade. The winter rainfall (February through May) showed no significant trends over four sub-basins but showed significant increasing trends (at α ≤ 0.1) over three sub-basins at a rate varying from 0.6 to 2.7 mm per decade. At the basin level, the summer rainfall showed a significant decreasing trend (at α = 0.05) while the autumn and winter rainfall showed no significant trends. In addition, shift in some amount of summer rainfall to winter and autumn season was noticed. It is evident that climate change has shown pronounced effects on the trends and patterns of seasonal rainfall. Thus, the study contribute to better understanding of climate change in the basin and the information from the study can be used in planning for adaptation measures against a changing climate.

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Assessment of sustainable development status of micro and small enterprises in Debre Berhan town, central Ethiopia

Alemayehu

Bekele

2023

J of Intl Development

Self Cite

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This study investigates the sustainable development status of micro and small enterprises (MSEs) in Debre Berhan town in five major manufacturing sub‐sectors (textile and garment, agro‐processing, woodwork, food processing and beverage and metal works and engineering). The sustainable development status of the selected MSEs was evaluated using 16 indicators for the three pillars of sustainable development (economic, social and environmental). The results showed that economic sustainability was at a ‘low’ level, while social and environmental sustainability and the aggregate index were at ‘moderate’ levels. Therefore, integrated support is required to overcome the identified challenges MSEs face to achieve sustainable development.

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Local spatiotemporal variability and trends in rainfall and temperature in the central highlands of Ethiopia

Cited by 82 publications

References 21 publications

Communities’ Livelihood Vulnerability to Climate Variability in Ethiopia

Communities’ Livelihood Vulnerability to Climate Variability in Ethiopia

Analysis of Long-Term Trends of Annual and Seasonal Rainfall in the Awash River Basin, Ethiopia

Assessment of sustainable development status of micro and small enterprises in Debre Berhan town, central Ethiopia

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