TChem-atm (v2.0.0): scalable performance-portable multiphase atmospheric chemistry

Díaz-Ibarra, Oscar H.; Frederick, Samuel G.; Curtis, Jeffrey H.; D'Aquino, Zachary; Bosler, Peter A.; Patel, Lekha; Safta, Cosmin; West, Matthew; Riemer, Nicole

doi:10.5194/gmd-19-1281-2026

Articles | Volume 19, issue 3

https://doi.org/10.5194/gmd-19-1281-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gmd-19-1281-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 3

Model description paper

|

11 Feb 2026

Model description paper |

| 11 Feb 2026

TChem-atm (v2.0.0): scalable performance-portable multiphase atmospheric chemistry

Oscar H. Díaz-Ibarra, Samuel G. Frederick, Jeffrey H. Curtis, Zachary D'Aquino, Peter A. Bosler, Lekha Patel, Cosmin Safta, Matthew West, and Nicole Riemer

Data sets

Data for TChem-atm (v2.0.0): Scalable Performance-Portable Multiphase Atmospheric Chemistry O. H. Díaz-Ibarra et al. https://doi.org/10.5281/zenodo.17362352

Model code and software

TChem-atm version 2.0.0, O. H. Díaz-Ibarra et al. https://doi.org/10.5281/zenodo.17058144

PartMC-TChem-atm O. H. Díaz-Ibarra et al. https://doi.org/10.5281/zenodo.17309370

Short summary

We developed TChem-atm, a new open-source tool for simulating atmospheric chemistry and aerosols. As models become more detailed, traditional methods are too slow. TChem-atm runs on both standard processors and graphics processors, making these simulations faster and more efficient. The tool provides a foundation for next-generation models that improve predictions of air quality and climate.