Gan et al. (2026) Drought dynamics and propagation in the Wei River Basin under non-stationary conditions

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

Identification

• Journal: Geomatics Natural Hazards and Risk
• Year: 2026
• Date: 2026-08-15
• Authors: Rong Gan, Junyu Lu, Jiajun Liao, Shuqian Gu, Jie Tao
• DOI: 10.1080/19475705.2026.2717854

Research Groups

Not specified

Short Summary

The study develops non-stationary meteorological (NRDI) and hydrological (NSRI) drought indices using a GAMLSS framework to more accurately analyze the propagation and correlation between these two types of droughts under changing climatic and anthropogenic conditions.

Objective

• To construct non-stationary drought indices and evaluate the propagation relationship between meteorological and hydrological droughts while accounting for non-stationary environmental factors.

Study Configuration

• Spatial Scale: Not specified
• Temporal Scale: Not specified

Methodology and Data

• Models used: GAMLSS (Generalized Additive Models for Location, Scale and Shape), nonlinear response models.
• Data sources: Climatic and anthropogenic factors (specific datasets not listed).

Main Results

• Non-stationary indices (NRDI and NSRI) provide more reliable drought propagation patterns and identify scale-dependent lag responses.
• The non-stationary framework captures drought events with higher accuracy, particularly in contexts influenced by human activities and climate change.
• Stationary indices were found to overestimate hydrological response thresholds, highlighting a systematic bias in traditional stationary approaches.

Contributions

• Establishes a non-stationary framework for drought index construction that incorporates climatic and anthropogenic drivers, proving that non-stationary approaches are essential for avoiding the overestimation of hydrological responses.

Funding

Not specified

Citation

@article{Gan2026Drought,
  author = {Gan, Rong and Lu, Junyu and Liao, Jiajun and Gu, Shuqian and Tao, Jie},
  title = {Drought dynamics and propagation in the Wei River Basin under non-stationary conditions},
  journal = {Geomatics Natural Hazards and Risk},
  year = {2026},
  doi = {10.1080/19475705.2026.2717854},
  url = {https://doi.org/10.1080/19475705.2026.2717854}
}