Developing new drought indices with and without climate signal information over the Upper Blue Nile

  • Abebe KebedeEmail author
  • U. Jaya Prakash Raju
  • Diriba Korecha
  • Melessew Nigussie
Original Article


The Upper Blue Nile region in Ethiopia, frequently affected by drought conditions and much of its water flows from highland regions to territorial countries. Hence to characterize, monitor and forecast drought, an advanced drought index which considers the combination of different climatic conditions in this region is required. The main objective of this article is to develop new drought indices by considering with and without climate signal contribution which is precious in decision making of policy makers and scientific community. In order to estimate the quality and performance of the developed indices we implemented statistical methods of RMSE, MAE and bias with the existing index of SPI across different time scales. Infact we developed two drought indices by considering SST into the meteorological variables (MVDIstS) and without considering SST (MVDIst0). Both drought indices show drought severity, larger duration than that of SPI.


SPI MVDIstS MVDIst0 Signal Drought and multivariable 



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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Department of Physics, Washera Geospace and Radar Science Laboratory, Science CollegeBahir Dar UniversityBahir DarEthiopia
  2. 2.Department of Meteorology and Hydrology, College of Natural ScienceArba Minch UniversityArba MinchEthiopia
  3. 3.Ethiopia USGS/Famine Early Warning Systems NetworkAddis AbabaEthiopia

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