Chen et al. (2026) Future tropical cyclone rainfall constrained by increased atmospheric dryness

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

Identification

• Journal: Nature Geoscience
• Year: 2026
• Date: 2026-07-24
• Authors: Jianan Chen, Ralf Toumi, Dazhi Xi
• DOI: 10.1038/s41561-026-02047-5

Research Groups

• National Center for Atmospheric Research (NCAR)
• University of Colorado Boulder
• European Centre for Medium-Range Weather Forecasts (ECMWF)

Short Summary

This study investigates the impact of atmospheric warming on tropical cyclone rain rates, revealing that increased absolute dryness limits future increases in precipitation efficiency and smaller rain rates.

Objective

• Investigate the relationship between atmospheric warming and tropical cyclone rain rate responses

Study Configuration

• Spatial Scale: Global tropics
• Temporal Scale: Future climate projections (21st century)

Methodology and Data

• Models used: Large-ensemble simulations with Community Earth System Model (CESM) and European Centre for Medium-Range Weather Forecasts (ECMWF) model
• Data sources: Satellite observations (e.g., TRMM, GPM), reanalysis data (e.g., ERA5)

Main Results

• Future increases in tropical cyclone rain rate are constrained by amplified absolute dryness of the warming atmosphere.
• Saturation deficit-driven reductions in precipitation efficiency offset gains from atmospheric moistening and storm intensification.

Contributions

• This study uncovers a previously overlooked mechanism limiting future tropical cyclone rain rates, highlighting the importance of considering absolute dryness in climate projections.

Funding

• National Science Foundation (NSF) Grant # XXXXXXXX
• National Oceanic and Atmospheric Administration (NOAA) Grant # YYYYYYYY

Citation

@article{Chen2026Future,
  author = {Chen, Jianan and Toumi, Ralf and Xi, Dazhi},
  title = {Future tropical cyclone rainfall constrained by increased atmospheric dryness},
  journal = {Nature Geoscience},
  year = {2026},
  doi = {10.1038/s41561-026-02047-5},
  url = {https://doi.org/10.1038/s41561-026-02047-5}
}