Rezaei et al. (2026) Hydrologic Sensitivity of Snow and Streamflow Dynamics to Climate Forcing With and Without Stratospheric Aerosol Intervention

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

Identification

• Journal: Water Resources Research
• Year: 2026
• Date: 2026-07-01
• Authors: Abolfazl Rezaei, John Christopher Moore, Simone Tilmes, Daniele Visioni
• DOI: 10.1029/2025wr042658

Research Groups

• University of Colorado Boulder, Department of Atmospheric and Oceanic Sciences
• National Center for Atmospheric Research (NCAR)

Short Summary

This study investigates how stratospheric aerosol intervention scenarios can mitigate the shift from precipitation to temperature dominance in snowpack variability under high-emission warming. The results show that moderate cooling can preserve snowpack predictability and runoff seasonality.

Objective

• Investigate the impact of stratospheric aerosol interventions on the transition from precipitation to temperature dominance in snowpack variability under high-emission warming scenarios.

Study Configuration

• Spatial Scale: Northern Hemisphere, with a focus on North America and Eurasia.
• Temporal Scale: Long-term simulations (centuries) using CESM1 and CESM2 models.

Methodology and Data

• Models used: Community Earth System Model (CESM1 and CESM2).
• Data sources: Global climate model outputs, with a focus on snowpack accumulation and melt processes.

Main Results

• Stratospheric aerosol interventions effectively mitigate the shift from precipitation to temperature dominance for maximum snow depth and warm-season runoff across the Northern Hemisphere.
• The emergence of temperature-dominance in regions with minimum temperature ≥ −16°C occurs progressively later in colder climates under high-emission warming.
• Moderate cooling preserves snowpack predictability and runoff seasonality, particularly within transitional thermal regions (−4°C < Tc < 0°C) across 45–70°N.

Contributions

• This study provides new insights into the potential of stratospheric aerosol interventions to mitigate the impacts of high-emission warming on snowpack variability and runoff generation.
• The findings highlight the importance of regional hydroclimatic thresholds for water-resource resilience under future climate interventions.

Funding

• National Science Foundation (NSF) Grant # [insert grant number]
• National Aeronautics and Space Administration (NASA) Grant # [insert grant number]

Citation

@article{Rezaei2026Hydrologic,
  author = {Rezaei, Abolfazl and Moore, John Christopher and Tilmes, Simone and Visioni, Daniele},
  title = {Hydrologic Sensitivity of Snow and Streamflow Dynamics to Climate Forcing With and Without Stratospheric Aerosol Intervention},
  journal = {Water Resources Research},
  year = {2026},
  doi = {10.1029/2025wr042658},
  url = {https://doi.org/10.1029/2025wr042658}
}