Impact of Climate Change on Seasonal Rainfall Patterns over Bale Highlands, Southeastern Ethiopia
International Journal of Environmental Chemistry
Volume 3, Issue 2, December 2019, Pages: 84-91
Received: Sep. 6, 2019;
Accepted: Oct. 24, 2019;
Published: Dec. 31, 2019
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Wogayehu Legese Jima, Department of Space and Its Application, Addis Ababa University, Ethiopian Space Science and Technology Institute, Addis Ababa, Ethiopia; Department of Environmental Science, Madda Walabu University, Natural and Computational Collage, Bale Robe, Ethiopia
Deriba Korecha, Department of Science, Institution: Famine Early Warning Systems Network (FEWSNET), Addis Ababa, Ethiopia
Kasahun Tur, Department of Environmental Science, Addis Ababa University, Center for Environmental Science, Addis Ababa, Ethiopia
The objective of this study was evaluates the impact of climate change on seasonal rainfall patterns over Bale Highlands by using climate data from National Meteorology Agency and downscaling Coordinated Regional Climate Downscaling Experiment (Cordex) output data from cordex Africa. In order to estimate the climate change signal scenarios of rainfall and temperature were developed for periods of 30 years (2011 to 2100). The outputs GCM model for the RCP4.5 and RCP8.5 emission scenarios were used to produce the future scenarios. Instat V3.7 software was governed for this study. The sample size for this study was 768 respondents randomly selected. Results of R 2=0.58 for temperature over study area which shows that there is a good correlation between downscaled and observed data. The study shows that there is an overall increasing trend in seasonal maximum and minimum temperatures and decreasing of seasonal rainfall from the base period. The onset, cessation and Length of Growing Periods in both Belg and Kiremt season shifts from the base years. Observational data, GCM date and farmer’s perception showed similar result and there is a shift of seasons over Bale highlands form 2 days to dekade. During Kiremt season there was decreasing of LGP from 109 to 101. Similarly, the LGP of Belg was reduced from 84 days to 48 days at the end of 21st century. The onset of Belg season at the end of 21st century will shifts to May. The anticipated shift of Kiremt season will merging to Bega (dry season) with this the author recommended the local farmers or any concerned body uses this information which is significant amount of rainfall require appropriate acclimatization strategies to minimize risks, increase crop productivity, and avert food insecurity of the area.
Wogayehu Legese Jima,
Impact of Climate Change on Seasonal Rainfall Patterns over Bale Highlands, Southeastern Ethiopia, International Journal of Environmental Chemistry.
Vol. 3, No. 2,
2019, pp. 84-91.
Environmental Protection Authority (EPA, 2014): Change Indicators in the United States, report from the www.epa.gov/climatechange/indicators Climate website.
Chang H (2003); Basin hydrologic response to changes in climate and land use: the Conestoga River Basin, Pennsylvania. PhysGeogr 24: 222–247.
Novotny EV, Stefan HG (2007) Stream flow in Minnesota: indicator of climate change. J Hydrol 334: 319–333.
Kim U, Kaluarachchi JJ (2009) Climate change impacts on water resources in the Upper Blue Nile River Basin, Ethiopia. J Am Water ResourAssoc (JAWRA) 45 (6): 1361–1378.
Abdo KS, Fiseha BM, Rientjes THM, Gieske ASM, Haile AT (2009) Assessment of climate change impacts on the hydrology of GilgelAbay catchment in Lake Tana basin. Ethiopia 23: 3661–3669.
IPCC (Intergovernmental Panel on Climate Change, 2007). Summary for policy makers. Climate change 2007: the physical science basis, Working Group I contribution to IPCC fourth assessment report: climate change 2007. Geneva.
Funk, C. et al. 2005. Recent drought tendencies in Ethiopia and Equatorial Subtropical Eastern Africa. FEWS-NET.
Sayed, M. A. A., (2004): Impacts of climate change on the Nile Flow, Ain Shams University, Cairo, Egypt.
Korecha, D. and Barnston, A. G. (2007). Predictability of June-September Rainfall in Ethiopia. Monthly weather review. V. 135, p. 628-650.
NMSA (National Meteorological Service Agency, 1996): Climatic & Agro-climatic Resources of Ethiopia. Meteorological Research Report Series, 1: 1, January. Addis Ababa, Ethiopia.
Bekele, F., 1997: Ethiopian use of ENSO information in its seasonal forecasts. Internet J. Afr. Studies, No. 2. Available online at http://www.ccb.ucar.edu/ijas/ijasno2/bekele.html.
Korecha, D. and A. Sorteberg (2013), Construction of Homogeneous Rainfall Regimes for Ethiopia, Submitted to International Journal of Climatology.
Miehe, S. and Miehe, G. (1994) Ericaceous Forests and Heath lands in the Bale Mountains of South Ethiopia: Ecology and Man’s Impact. Siftung Walderhaltung in Afrika, Hamburg, 206 pp.
Morton, B. (1976) A field guide to Ethiopian minerals, rock and fossils. Addis Ababa University Press, Addis Ababa.
Messay Abebe, 2006. The Onset, Cessation and Dry Spells of the Small Rainy Season (Belg) of Ethiopia. National Meteorological Agency, Addis Ababa, Ethiopia.
Segele, Z. T., and P. J. Lamb 2005: Characterization and variability of Kiremt rainy season over Ethioia. Meteor. Atmos. Phys., 89, 153-180.
FARM Africa and SOS Sahel. (2007). Bale Eco-Region Sustainable Management Programme (BERSMP): Annual report.
WBISPP (Woody Biomass Inventory and Strategic Planning Project, 1995): Socio-cultural and Economic aspects of crop, livestock and tree production. The Woody Biomass Inventory and Strategic Planning Project. Ministry of Mines and Energy. Ethiopian Energy studies and Research Center.
Muleta D, Desalegn O. and Bikila Z. a (2015): Using NDVI for Prediction of Yield for Specific Crop Type: Case Study of Sinana District in Bale Zone.
BZFEDO (Bale Zone Finance and Economic Development Office, 2010): Physical and socio Economic profile of Bale zone.
WMO, 2009: Progress Report on the Implementation of the Global Observing System for Climate in Support of the UNFCCC 2004-2008. August 2009, GCOS-129 World Meteorological Station-TD/No. 1489, GOOS-173, GTOS-70.
Australian Bureau of Meteorology, 2010. Rainfall variability in Australia. http://www.bom.gov.au/climate/data/index.shtml.Accessed.
Stern, R., Rijks, D, Dale, I. and Knock, J. 2006. INSTAT Climatic Guide. 330 pp. http://www.reading.ac.uk/ssc/software/instat/climatic.pdf/oct. 27/2010.
Hoefsloot, p., 2009. LEAP (Livelihood Early Assessment Protection) version 2.1 for Ethiopia. By collaborative action of FAO, World Bank and World food programme. The Netherlands.
Hare, F. K., 1983. Climate and Desertification. Revised analysis (WMO-UNDP) WCP-44 pp 5-20. Geneva, Switzerland.
Thrusfield M (2007) Veterinary epidemiology (3rd edn). Blackwell Science, Ox-ford, UK. 2: 51-281.
Legese W, Koricha D, Ture K (2018) Characteristics of Seasonal Rainfall and its Distribution Over Bale Highland, Southeastern Ethiopia. J Earth Sci Clim Change 9: 443.
Legese W (2017) Climate Change Indication and Projection Over Bale Highlands, Southeastern Ethiopia. J Climatol Weather Forecasting 5: 212.