Tsouli et al. (2026) Impact of climate change on variations in groundwater storage in the Saïss aquifer (Northern Morocco)

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Identification

• Journal: Springer Link (Chiba Institute of Technology)
• Year: 2026
• Date: 2026-01-23
• Authors: Chaymae Tsouli, Anass Aynaou, Nordine Nouayti, Driss Khattach, Abderahim Nouayti
• DOI: 10.1051/bioconf/202621201028/pdf

Research Groups

The provided text does not explicitly mention specific research groups, labs, or departments involved in the study.

Short Summary

This study investigates the influence of rainfall intensity and drought regimes on groundwater levels in the Sais aquifer, Morocco, using satellite data and the Innovative Trend Analysis (ITA) method, revealing a significant decline in groundwater storage primarily due to overexploitation.

Objective

• To examine the influence of rainfall intensity and drought regimes on groundwater levels in the Sais aquifer, a semi-arid region of Morocco.
• To analyze groundwater storage (GWS) trends using satellite-derived datasets and the Innovative Trend Analysis (ITA) method to detect long-term changes.

Study Configuration

• Spatial Scale: Regional (Sais aquifer, Morocco).
• Temporal Scale: Long-term (analysis of time series trends).

Methodology and Data

• Models used: Innovative Trend Analysis (ITA) method. The Mann-Kendall test was used for comparison.
• Data sources: Satellite-derived datasets, Gravity Recovery and Climate Experiment (GRACE) gridded data (for equivalent water thickness (EWT) and soil moisture).

Main Results

• A significant decline in groundwater levels was observed across the Sais aquifer.
• 40% of monitoring sites showed a substantial downward trend in groundwater levels.
• 60% of monitoring sites experienced pronounced declines in groundwater levels.
• The estimated maximum groundwater storage loss is -7.73 x 10^-11 meters per second (-0.244 cm/yr).
• These findings highlight the adverse effects of overexploitation and inefficient irrigation practices.

Contributions

• The study introduces the Innovative Trend Analysis (ITA) technique to enhance the accuracy of trend detection for groundwater levels, offering a robust approach compared to traditional methods like the Mann-Kendall test.
• It provides valuable insights into long-term groundwater storage changes in a vulnerable semi-arid region.
• The research informs water management strategies aimed at mitigating groundwater depletion and supporting sustainable management in such regions.

Funding

The provided text does not contain information regarding funding projects, programs, or reference codes.

Citation

@article{Tsouli2026Impact,
  author = {Tsouli, Chaymae and Aynaou, Anass and Nouayti, Nordine and Khattach, Driss and Nouayti, Abderahim},
  title = {Impact of climate change on variations in groundwater storage in the Saïss aquifer (Northern Morocco)},
  journal = {Springer Link (Chiba Institute of Technology)},
  year = {2026},
  doi = {10.1051/bioconf/202621201028/pdf},
  url = {https://doi.org/10.1051/bioconf/202621201028/pdf}
}