Yoshe (2025) Assessment of drought vulnerability in the Nile River basin using satellite remote sensing, Africa

⚠️ Warning: This summary was generated from the abstract only, as the full text was not available.

Identification

• Journal: Hydrology research
• Year: 2025
• Date: 2025-10-29
• Authors: Agegnehu Kitanbo Yoshe
• DOI: 10.2166/nh.2025.007

Research Groups

[Not explicitly mentioned in the abstract.]

Short Summary

This study utilized GRACE terrestrial water storage variations to identify and characterize 12 drought events in the Nile River basin between 2002 and 2023, demonstrating that the GRACE-based drought index significantly correlates with meteorological drought.

Objective

• To utilize GRACE terrestrial water storage variation (TWS) to identify and characterize drought events.
• To compare GRACE-based drought events with commonly used drought indices.
• To identify possible multiscale relationships between TWS and climate variables.
• To verify the importance of GRACE data for drought quantification and characterization.

Study Configuration

• Spatial Scale: Nile River basin
• Temporal Scale: 2002 to 2023. Specific drought periods: October 2003 to July 2007 (45 months) and September 2008 to September 2012 (49 months).

Methodology and Data

• Models used: Cross-wavelet coherence analysis, cross-wavelet spectrum.
• Data sources: Gravity Recovery and Climate Experiment (GRACE) terrestrial water storage variation (TWS) data.

Main Results

• 12 drought events were observed in the Nile River basin between 2002 and 2023, based on estimated water storage deficit.
• The most extensive drought periods were identified as October 2003 to July 2007 (45 months) and September 2008 to September 2012 (49 months).
• A multiscale relationship between the GRACE-based drought index (GDI) and corresponding drought indices was detected.
• The evaluated GDI significantly correlated with meteorological drought.

Contributions

• Verified the importance of utilizing GRACE data for drought quantification and characterization.
• Demonstrated the application of GRACE TWS for identifying and characterizing drought events over a significant period (2002-2023) in the Nile River basin.
• Identified multiscale relationships between GRACE-based drought indices and other climate/drought variables.

Funding

[Not mentioned in the abstract.]

Citation

@article{Yoshe2025Assessment,
  author = {Yoshe, Agegnehu Kitanbo},
  title = {Assessment of drought vulnerability in the Nile River basin using satellite remote sensing, Africa},
  journal = {Hydrology research},
  year = {2025},
  doi = {10.2166/nh.2025.007},
  url = {https://doi.org/10.2166/nh.2025.007}
}