Developing an Impact-Based Combined Drought Index for Monitoring Crop Yield Anomalies in the Upper Blue...

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Yared Bayissa

Developing an Impact-Based Combined Drought Index for Monitoring Crop Yield Anomalies in the Upper Blue Nile Basin, Ethiopia

Yared Bayissa

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English

CRC Press
24 October 2018

Water industries; Hydrology & the hydrosphere; Drought & water supply; Agronomy & crop production

Series: IHE Delft PhD Thesis Series

Having a robust drought monitoring system for Ethiopia is crucial to mitigate the adverse impacts of droughts. Yet, such monitoring system still lacks in Ethiopia, and in the Upper Blue Nile (UBN) basin in particular. Several drought indices exist to monitor drought, however, these indices are unable, individually, to provide concise information on the occurrence of meteorological, agricultural and hydrological droughts. A combined drought index (CDI) using several meteorological, agricultural and hydrological drought indices can indicate the occurrence of all drought types, and can provide information that facilitates the drought management decision-making process. This thesis proposes an impact-based combined drought index (CDI) and a regression prediction model of crop yield anomalies for the UBN basin. The impact-based CDI is defined as a drought index that optimally combines the information embedded in other drought indices for monitoring a certain impact of drought, i.e. crop yield for the UBN. The developed CDI and the regression model have shown to be effective in indicating historic drought events in UBN basin. The impact-based CDI could potentially be used in the future development of drought monitoring in the UBN basin and support decision making in order to mitigate adverse drought impacts.

By: Yared Bayissa
Imprint: CRC Press
Country of Publication: United Kingdom
Dimensions: Height: 240mm, Width: 170mm,
Weight: 453g
ISBN: 9780367024512
ISBN 10: 0367024519
Series: IHE Delft PhD Thesis Series
Pages: 146
Publication Date: 24 October 2018
Audience: College/higher education , Primary
Format: Paperback
Publisher's Status: Active

"Yared was born in Ambo town in Ethiopia in 1979. He studied his Bachelor of Science (BSc) degree in Irrigation Engineering at the former Arbaminch Water Technology Institute (AWTI) the later Arbaminch University where he graduated in 2002. He joined Addis Ababa Institute of Technology (AAiT), Ethiopia for Maters studies in 2007, and graduated with a MSc degree in Civil Engineering, with specialization in Hydraulic Engineering in 2009. Yared pursued a PhD in the ""sandwich programme"" between IHE Delft Institute for Water Education/TU-Delft, The Netherlands, and Ambo University, Ethiopia and graduated in 2018. Since 2016, he has been working in the National Drought Mitigation Centre (NDMC) under the school of Natural Resources of the University of Lincoln-Nebraska, USA, as a visiting scientist."