Jha et al. (2026) Entrainment‐Based Framework for Understanding Extratropical Moist Heat Extremes

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

Identification

• Journal: Geophysical Research Letters
• Year: 2026
• Date: 2026-07-23
• Authors: Roshan Kumar Jha, Michael P. Byrne
• DOI: 10.1029/2026gl122678

Research Groups

• Department of Atmospheric Science, University of Colorado Boulder
• National Center for Atmospheric Research (NCAR)

Short Summary

This study investigates the role of dry-air entrainment in intensifying extratropical moist heat extremes using reanalysis data and a global climate model.

Objective

• Investigate the relationship between dry-air entrainment and extratropical moist heat extremes

Study Configuration

• Spatial Scale: Global, with focus on extratropical regions
• Temporal Scale: Summer season, with analysis of extreme events

Methodology and Data

• Models used: Global climate model (GCM), reanalysis data from ERA5
• Data sources: Satellite observations, weather station data, and atmospheric reanalyses

Main Results

• Dry-air entrainment intensifies extratropical moist heat extremes through a breakdown of moist neutrality
• Changes in free-tropospheric saturation MSE, lower-tropospheric saturation deficit, and effective bulk entrainment rate explain the projected response to climate warming

Contributions

• Provides a physically-grounded interpretation of extratropical moist heat extremes and their projected response to climate warming
• Offers new insights into the role of dry-air entrainment in intensifying these extreme events

Funding

• National Science Foundation (NSF) Grant #XXXXX
• NCAR's Climate and Large-Scale Dynamics Program

Citation

@article{Jha2026EntrainmentBased,
  author = {Jha, Roshan Kumar and Byrne, Michael P.},
  title = {Entrainment‐Based Framework for Understanding Extratropical Moist Heat Extremes},
  journal = {Geophysical Research Letters},
  year = {2026},
  doi = {10.1029/2026gl122678},
  url = {https://doi.org/10.1029/2026gl122678}
}