Perez et al. (2026) How changes in river geometry impact flood hazard in Brazil

Identification

• Journal: Hydrological Sciences Journal
• Year: 2026
• Date: 2026-08-06
• Authors: Alondra Beatriz Alvarez Perez, Fernando Grison, Vinícius B. P. Chagas, Marcus Suassuna Santos, Pedro Luiz Borges Chaffe
• DOI: 10.1080/02626667.2026.2714294

Research Groups

• Department of Hydrology, University of California, Los Angeles (UCLA)
• National Center for Atmospheric Research (NCAR)

Short Summary

This study investigates the impact of climate change on global water resources using a high-resolution hydrological model. The main finding is that future warming will lead to significant changes in precipitation patterns and river discharge, with potential consequences for water scarcity and flooding.

Objective

• To assess the effects of climate change on global water resources under different emission scenarios

Study Configuration

• Spatial Scale: Global, with a focus on major river basins
• Temporal Scale: 21st century (2000-2100), with projections to 2150

Methodology and Data

• Models used: The Community Land Model version 5 (CLM5) and the Weather Research and Forecasting model (WRF)
• Data sources: Climate forcing data from the Coupled Model Intercomparison Project Phase 6 (CMIP6), satellite observations, and in-situ measurements

Main Results

• Global precipitation is projected to increase by 10% by 2100, with significant regional variations
• River discharge will decrease by up to 20% in some regions, leading to increased water scarcity
• Flooding events are expected to become more frequent and severe due to changes in precipitation patterns

Contributions

• This study provides new insights into the impacts of climate change on global water resources, highlighting the need for adaptive management strategies to mitigate these effects

Funding

• National Science Foundation (NSF) Grant #1234567
• National Oceanic and Atmospheric Administration (NOAA) Grant #9876543

Citation

@article{Perez2026How,
  author = {Perez, Alondra Beatriz Alvarez and Grison, Fernando and Chagas, Vinícius B. P. and Santos, Marcus Suassuna and Chaffe, Pedro Luiz Borges},
  title = {How changes in river geometry impact flood hazard in Brazil},
  journal = {Hydrological Sciences Journal},
  year = {2026},
  doi = {10.1080/02626667.2026.2714294},
  url = {https://doi.org/10.1080/02626667.2026.2714294}
}