Ren (2026) ECARM: Energy-Consistent Advanced Regional Model (Version 1.0.0)

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Identification

• Journal: Open MIND
• Year: 2026
• Date: 2026-03-29
• Authors: X-Y. Ren
• DOI: 10.5281/zenodo.19311595

Research Groups

Not specified in the provided text.

Short Summary

This paper introduces ECARM, an energy-consistent dynamical core integrated into the WRF v4.2 modeling framework, designed to reduce spurious energy sources and sinks, thereby minimizing numerical dissipation and dispersion.

Objective

• To introduce and describe ECARM, a modified dynamical core for WRF v4.2 that employs an energy-consistent discretization scheme to improve energy conservation and reduce numerical artifacts.

Study Configuration

• Spatial Scale: Not specified in the provided text.
• Temporal Scale: Not specified in the provided text.

Methodology and Data

• Models used: ECARM (modified dynamical core), WRF v4.2 (modeling framework).
• Data sources: Not specified in the provided text.

Main Results

• ECARM successfully replaces the default ARW dynamical core within the WRF v4.2 framework.
• It implements an energy-consistent discretization scheme that effectively reduces spurious energy sources and sinks.
• The core minimizes numerical dissipation and dispersion within the model.
• ECARM maintains full compatibility with standard WRF v4.2 for compilation, execution, and output.
• It uses the Lamb form of the Navier-Stokes equations with hydrostatic balance decomposition and employs u, v, w, density, density-weighted temperature, and moisture as prognostic variables.

Contributions

• Introduction of ECARM, a novel energy-consistent dynamical core for the WRF v4.2 modeling framework.
• Enhancement of WRF's numerical accuracy and stability by significantly reducing energy conservation errors and numerical artifacts.
• Provision of a fully compatible, drop-in replacement for the ARW dynamical core, facilitating its adoption within the WRF community.

Funding

Not specified in the provided text.

Citation

@article{Ren2026ECARM,
  author = {Ren, X-Y.},
  title = {ECARM: Energy-Consistent Advanced Regional Model (Version 1.0.0)},
  journal = {Open MIND},
  year = {2026},
  doi = {10.5281/zenodo.19311595},
  url = {https://doi.org/10.5281/zenodo.19311595}
}