Multivariate analysis for medium- and long-range forecasting of Nile River flow to mitigate drought and flood risks

Hossam M. Ahmed, Ayman G. Awadallah, Alaa El-Din M. El-Zawahry and Khaled H. Hamed ()
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Hossam M. Ahmed: Cairo University
Ayman G. Awadallah: Fayoum University
Alaa El-Din M. El-Zawahry: Cairo University
Khaled H. Hamed: Cairo University

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2022, vol. 110, issue 1, No 33, 763 pages

Abstract: Abstract The Nile River provides Egypt with most of its water resources. Medium- and long-rage forecasts of Nile flows at Aswan have been recognized as of significant importance to allow better management and operation of the water resource facilities and mitigate the risks of both droughts and floods. In this study, a wide range of climate indices and atmospheric fields were used as potential predictors for long-range forecasting of Nile streamflow for one flood season ahead (July–October). The approach followed in this study focuses on searching for potential predictors, reducing the pool of potential predictors by using multivariate statistical analysis, applying sequentially, Canonical Correlation Analysis, Principal Component Analysis, and multiple linear regression to robustly forecast the Nile flow. The proposed approach proved to be very useful for improving long-range Nile River flow forecasting. It revealed the adequacy of the models and enhanced the accuracy of the predictions of the full spectrum of droughts and floods, both in the calibration and validation phases, over the simple stepwise regression method using all climate indices and atmospheric fields as potential predictors.

Keywords: Medium to long-range forecasting; Principal component analysis; Canonical correlation analysis; Multiple linear regression; Nile River flow (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1007/s11069-021-04968-3

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