Articles | Volume 15, issue 6
Hydrol. Earth Syst. Sci., 15, 1937–1944, 2011
https://doi.org/10.5194/hess-15-1937-2011

Special issue: Climate, weather and hydrology of East African Highlands

Hydrol. Earth Syst. Sci., 15, 1937–1944, 2011
https://doi.org/10.5194/hess-15-1937-2011

Research article 24 Jun 2011

Research article | 24 Jun 2011

Trend analysis of extreme precipitation in the Northwestern Highlands of Ethiopia with a case study of Debre Markos

H. Shang1, J. Yan1,2, M. Gebremichael3, and S. M. Ayalew4 H. Shang et al.
  • 1Department of Statistics, University of Connecticut, Storrs, Connecticut, USA
  • 2Center for Environmental Sciences and Engineering, University of Connecticut, Storrs, Connecticut, USA
  • 3Department of Civil and Environmental Engineering, University of Connecticut, Storrs, Connecticut, USA
  • 4Department of Civil Engineering, Faculty of Technology, Addis Ababa University, Ethiopia

Abstract. Understanding extreme precipitation is very important for Ethiopia, which is heavily dependent on low-productivity rainfed agriculture but lacks structural and non-structural water regulating and storage mechanisms. There has been an increasing concern about whether there is an increasing trend in extreme precipitation as the climate changes. Existing analysis of this region has been descriptive, without taking advantage of the advances in extreme value modeling. After reviewing the statistical methodology on extremes, this paper presents an analysis based on the generalized extreme value modeling with daily time series of precipitation records at Debre Markos in the Northwestern Highlands of Ethiopia. We found no strong evidence to reject the null hypothesis that there is no increasing trend in extreme precipitation at this location.