Feng et al. (2026) Global‐Regional AI Weather Forecasting on a Stretched Cubed Sphere

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

Identification

• Journal: Geophysical Research Letters
• Year: 2026
• Date: 2026-08-11
• Authors: Jin Feng, Weiwen Ji
• DOI: 10.1029/2026gl124199

Research Groups

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

Short Summary

This study develops and evaluates two novel numerical weather prediction models, StretchCast, on a stretched cubed sphere mesh to improve regional weather forecasting. The results show improved forecast quality and continuity across face boundaries.

Objective

• Investigate the application of a stretched cubed sphere mesh in numerical weather prediction for regional weather forecasting

Study Configuration

• Spatial Scale: Global with a focus on eastern China
• Temporal Scale: Medium-range (up to 10 days)

Methodology and Data

• Models used: One-step and multistep StretchCast models
• Data sources: Not specified in the abstract, but likely includes observational data and reanalysis products

Main Results

• Improved forecast quality through local facewise mixing and global coupling
• Preservation of continuity across face boundaries for Typhoon Muifa
• Consistent spectral structure in medium-range forecasting performance

Contributions

• Development of a novel numerical weather prediction approach using a stretched cubed sphere mesh, which improves regional weather forecasting capabilities
• Demonstration of the potential of this approach to enhance forecast quality and continuity across face boundaries

Funding

• Not specified in the abstract

Citation

@article{Feng2026GlobalRegional,
  author = {Feng, Jin and Ji, Weiwen},
  title = {Global‐Regional AI Weather Forecasting on a Stretched Cubed Sphere},
  journal = {Geophysical Research Letters},
  year = {2026},
  doi = {10.1029/2026gl124199},
  url = {https://doi.org/10.1029/2026gl124199}
}