Gires et al. (2026) A Universal Multifractals perspective into the link between rainfall variability and temperature

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

Identification

• Journal: Hydrology and earth system sciences
• Year: 2026
• Date: 2026-07-28
• Authors: Auguste Gires, Yann Torres
• DOI: 10.5194/hess-30-4741-2026

Research Groups

• Laboratoire des Sciences du Climat et de l'Environnement (LSCE)
• Université de Lille, CNRS UMR 9189 - CEREGE

Short Summary

This study investigates the relationship between rainfall variability and temperature across different scales using high-resolution measurement data from Northern France. The results show a positive association between the scale-invariant maximum observable singularity of rainfall extremes and sample-mean surface temperature.

Objective

• Investigate how rainfall variability changes with temperature across different scales, relying on the Universal Multifractals framework.

Study Configuration

• Spatial Scale: Three high-resolution measurement campaigns in Northern France (2016-2025)
• Temporal Scale: Two distinct ranges of scales: event scale (30 s – 1 h) and synoptic scale (roughly 11 d)

Methodology and Data

• Models used: None, observational data only
• Data sources: High-resolution measurement campaigns in Northern France

Main Results

• The scale-invariant maximum observable singularity of rainfall extremes is positively associated with sample-mean surface temperature across both event and synoptic scales.
• Weak individual-sample correlations between temperature and rainfall extremes.
• Seasonality cannot be fully disentangled from temperature.

Contributions

• Provides a scale-invariant observational complement to the existing multifractal-extremes literature on climate-forced rainfall changes.
• Offers a framework to interpret previously commonly reported trends of a scale dependence of the rate of increase of extremes with temperature.

Funding

• This research was funded by the ANR (Agence Nationale de la Recherche) project "Multifractals and Climate Extremes" (ANR-15-CE01-0009).

Citation

@article{Gires2026Universal,
  author = {Gires, Auguste and Torres, Yann},
  title = {A Universal Multifractals perspective into the link between rainfall variability and temperature},
  journal = {Hydrology and earth system sciences},
  year = {2026},
  doi = {10.5194/hess-30-4741-2026},
  url = {https://doi.org/10.5194/hess-30-4741-2026}
}