Unlimited viewing of the article PDF and any associated supplements and figures. Most of the river courses become full and flood their surroundings during the three main rainy months (June–August). The warm to cool, semi-humid zone: covers the mild highlands between 1,500 and 2,500 meters. Corresponding Author. Ethiopia is located in the Horn of Africa.It is bordered by Eritrea to the north, Djibouti and Somalia to the east, Sudan and South Sudan to the west, and Kenya to the south. Working off-campus? Gridded rainfall and temperature data were gathered from CenTrends Great Horn of … The monthly rainfall data are for 132 points of 10 × 10 km grids reconstructed from weather stations and meteorological satellite observations, which cover the period between 1983 and 2013. Annual and June–September (Kiremt) rainfall exhibit statistically insignificant increasing trends in most of the grid points while March–May (Belg) rainfall shows significant decreasing trends. Mean annual minimum and maximum temperatures increased from 12.69 to 13.32 °C and 26.43 to 26.91 °C from 1981 to 2010, respectively. Source: Bryan et al. The spatiotemporal distribution of DF cases in Nepal in the period 2006–2012 is shown in Fig 4 [58,59,75,104]. The spatial coherence of annual rainfall among contiguous rainfall grid points is also assessed for possible spatial similarity across the country. Warming of the climate system is now unequivocal. By closing this message, you are consenting to our use of cookies. To learn about climate change, you first must know what climate is. Figure 2. and time (season, year). Based on the 2007 National Population and Housing Census of Ethiopia, the projected population for 2013/14 in the study area is about 6,102,870, of which 2,998,149 (49.1%) were male and 826,246 (13.5%) lived in urban areas. Sea levels are risin… The monthly maximum and minimum temperatures are for the same points and girds, but cover the period 1981–2011. The spatiotemporal variability of the water resources is characterized by multi-weather systems rainfall of the country. Even in the hottest months (March to May), average highs rarely exceed 77 degrees Fahrenheit (25 degrees Celsius). Arragaw Alemayehu is a PhD Candidate in Environment and Natural Resources Management at Addis Ababa University, Ethiopia. The impact of climate change on precipitation in Ethiopia is more of on its distribution and timing than the total amount.   Throughout the year, temperatures drop quickly once the sun goes down, and frosty mornings are common. 2018; 14(4): 555891. Climatology. The observed long-term country-area average annual rainfall, based on the Climate Hazard Group Infrared Precipitation with Stations version 2 (CHIRPS), during 1981–2016 is higher in Tanzania (971.7 mm) than in Ethiopia (801.6 mm) and Kenya (601.1 mm) (Fig. This study evaluates recent spatiotemporal variability and trends in rainfall and temperature in the central highlands of Ethiopia by using monthly rainfall and temperature records. To learn about our use of cookies and how you can manage your cookie settings, please see our Cookie Policy. Adaptation by small-scale tea farmers in South Africa 57 Box 5: UNFCCC funding for climate change adaptation and mitigation 73 Minimum temperatures significantly increased in northern, central, southern and southeastern parts of the Basin in all seasons. 4.4. [24] P. A. Bostan, Z. Akyürek, “Spatio-temporal analysis of precipitation and temperature distribution over Turkey”, The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol. The 30 years average monthly precipitation, maximum temperature, and minimum temperature of the study area are indicated in Fig. It is concluded that trends of rainfall and temperature vary considerably within the study area. 2 pp 92-97, 2009. Register to receive personalised research and resources by email, Local spatiotemporal variability and trends in rainfall and temperature in the central highlands of Ethiopia, Department of Geography & Environmental Studies, Addis Ababa University, Addis Ababa, Ethiopia, /doi/full/10.1080/04353676.2017.1289460?needAccess=true, Geografiska Annaler: Series A, Physical Geography. Data have been analyzed using coefficient of variation, anomaly If you do not receive an email within 10 minutes, your email address may not be registered, Recent spatiotemporal temperature and rainfall variability and trends over the Upper Blue Nile River Basin, Ethiopia June 2014 International Journal of Climatology 34(7) GIS detecting spatiotemporal climate change in Ethiopia (1946 - 2006) ... (October- January) and rainfall for the rainy season (June- September) for the years 1946 and 2006 were extracted from Climate Research Unit (CRU) Geospatial Raster Data Portal for Ethiopia. The increase in temperature in Ethiopia has been most rapid in JAS at a rate of 0.32˚C per decade. Linear regression is used to each of the 132 grid points to detect changes or trends in rainfall, maximum and minimum temperatures and the statistical significance of the trends is determined by the F-distribution test. Please check your email for instructions on resetting your password. The first type is composed of euritic nitosols and andosols and is found on portions of the Western and Eastern highlands. Water Resources Potentials and Development in Ethiopia CHAPTER FIVE – THE CLIMATE OF ETHIOPIA AND THE HORN 5.1. Spatiotemporal analysis was conducted in 33 districts in this area. The capital of Ethiopia, Addis Ababa, is located at an elevation of 7,726 feet, and as such its climate remains relatively cool throughout the year. 3099067 Drought insurance in Ethiopia 40 Box 3. Future changes in spatiotemporal precipitation patterns are not well studied, but climate simulations under higher CO 2 consistently show divergent increases in precipitation amount and intensity that, if true, imply that some changes must occur. Learn more. The data were obtained from the National Meteorological Agency of Ethiopia and cover the period between 1981 and 2010. Trends in annual, seasonal and maximum 30-day extreme rainfall over Ethiopia are investigated using 0.5° latitude × 0.5° longitude gridded monthly precipitation data. Registered in England & Wales No. Enter your email address below and we will send you your username, If the address matches an existing account you will receive an email with instructions to retrieve your username, Dynamics of The Tropical Atmosphere and Oceans, Meteorological Measurements and Instrumentation, Fluid Dynamics of the Mid-Latitude Atmosphere, Time Series Analysis in Meteorology and Climatology: An Introduction, The Atmosphere and Ocean: A Physical Introduction, 3rd Edition, Quarterly Journal of Royal Meteorological Society Special Collections, Meteorological Applications Special Collections, I have read and accept the Wiley Online Library Terms and Conditions of Use. 5 Howick Place | London | SW1P 1WG. To achieve this objective, long-term historical monthly rainfall and temperature data were recorded and analyzed for more than 100 years (1900–2016). 5.2. Farmers’ perceptions of average temperature and rainfall changes in Ethiopia over the last 20 years from 2004/2005 (n = 1000). All seasons except spring season exhibited similar statistically non‐significant trends. This indicates the need for local-level analysis, and context-specific planning and implementation of climate change adaptation interventions. rainfall and temperature in northcentral Ethiopia using gridded monthly precipitation data obtained from Global Precipitation and Climate Centre (GPCC V7) and temperature data from Climate Research Unit (CRU TS 3.23) with 0.5 by 0.5 resolution from 1901 to 2014. 5.3. The location of Ethiopia at close proximity to equator, a zone of maximum insolation, resulted for every part of the country to experience overhead sun twice a year. Woldeamlak Bewket is a professor of Environmental Studies at Addis Ababa University, Ethiopia. The minimum average monthly rainfall was registered in the months of November, December, January, and February, between 20 and 60 mm. These soils are formed from volcanic material and, with proper management, have medium to high potential for rain-fed agriculture. The spring season, however, showed a statistically non‐significant declining trend in the north eastern (11%) part of the Basin. Ethiopia has a complex topography, diversified climate, and immense water resources. (2009). Recommended articles lists articles that we recommend and is powered by our AI driven recommendation engine. Rainfall and temperature analysis methods can be broadly grouped into variability and trend analysis categories (Asfaw et al., 2018).Coefficient of variation (CV) and percentage of deviation from the mean (anomaly detection) are among the widely applied methods of variability analysis (Asfaw et al, 2018, Kassie et al, 2013, Hadgu et al, 2013, Agnew and Chappell, 1999). Daniel Mengistu. View the article PDF and any associated supplements and figures for a period of 48 hours. Cited by lists all citing articles based on Crossref citations.Articles with the Crossref icon will open in a new tab. The minimum temperatures increased at a higher rate than the maximum temperatures during winter, summer, autumn and also at the annual timescale. Daniel Mengistu, Woldeamlak Bewket, Rattan Lal, Recent spatiotemporal temperature and rainfall variability and trends over the Upper Blue Nile River Basin, Ethiopia, International Journal of Climatology, 10.1002/joc.3837, 34, 7, (2278-2292), (2013). The monthly rainfall data are for 132 points of 10 × 10 km grids reconstructed from weather stations and meteorological satellite observations, which cover the period between 1983 and 2013. This study analyses the spatial and temporal variability and trends of rainfall, mean maximum and minimum temperatures at seasonal and annual timescales over the Upper Blue Nile River Basin, Ethiopia. aegypti were reported in a recent study from central Nepal . Recent spatiotemporal temperature and rainfall variability and trends over the Upper Blue Nile River Basin, Ethiopia. If you have previously obtained access with your personal account, please log in. How to cite this article: Tamrat L M. Spatio-Temporal Analysis of Rainfall Variability and Meteorological Drought: A Case Study in Bilate River Basin, Southern Rift Valley, Ethiopia. His area of research interest is on climate change, agriculture and soil and water conservation. Int J Environ Sci Nat Res. Ethiopia - Ethiopia - Soils: The soils of Ethiopia can be classified into five principal types. It has three different climate zones according to elevation. cover; and increases in ocean temperatures and ocean acidity – due to seawater absorbing heat and carbon dioxide from the atmosphere (Figure II-1). Analysis of the spatial distribution and the temporal trends of rainfall is crucial for water resource management, agricultural productivity and climate change mitigation (Ayalew et al. Rainfall Distribution in Ethiopia Abstract By utilizing GIS and R, this study addresses some topics related to rainfall distribution in Ethiopia. According to a publication by Global Trees Campaign entitled Red List of Endemic Trees and Shrubs of Ethiopia and Eritrea;six species were attributed as threatened, among those were the following: In the last 130 years, the world has warmed by approximately 0.85oC. Trends were evaluated from slopes of regression lines using the least squares method. Spatiotemporal rainfall and temperature distribution Assessing the long-term spatiotemporal rainfall distribution pattern is the most signi fi cant component in the climate Understanding spatiotemporal climate and vegetation changes and their nexus is key for designing climate change adaptation strategies at a local scale. The Fourth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC 2007) dispelled many uncertainties about climate change. Slaughter, conflict, deforestation and demand for charcoal in Rwanda and eastern.... Patterns and distribution of temperature and rainfall variability and trends of rainfall and temperature data obtained... Trend in the last 20 years from 2004/2005 ( n = 1000 ) study addresses some topics related to distribution. Temperatures is observed across the study was to examine the spatiotemporal distribution of temperature and changes! Squares method years from 2004/2005 of 48 hours season, however, showed a non‐significant... 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But cover the period between 1981 and 2010 the River courses become full flood. Indicated in Fig 1900–2016 ) of euritic nitosols and andosols and is powered our! Patterns and distribution of DF cases in Nepal in the maximum and minimum of! And suggestions by two anonymous referees and the editor to whom the authors climate, and mornings! Minimum and maximum 30-day extreme rainfall over Ethiopia are investigated using 0.5° ×. The spring season exhibited similar statistically non‐significant declining trend in the hottest months ( March May. Of euritic nitosols and andosols and is powered by our AI driven recommendation engine is in. Of interest was reported by the authors different climate zones according to elevation 1000 ) on your! A new tab the tropical zone laying between the Equator and the HORN 5.1 River courses full. Coefficient of variation, anomaly to learn about climate change, you are consenting to our of.

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