Geoscientific Model Development
Geoscientific Model Development
GMD
Articles | Volume 17, issue 13
Articles | Volume 17, issue 13
https://doi.org/10.5194/gmd-17-5331-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-17-5331-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 17, issue 13
Development and technical paper
 | 
11 Jul 2024
Development and technical paper |  | 11 Jul 2024

New routine NLTE15µmCool-E v1.0 for calculating the non-local thermodynamic equilibrium (non-LTE) CO2 15 µm cooling in general circulation models (GCMs) of Earth's atmosphere

Alexander Kutepov and Artem Feofilov

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Latest update: 05 Jun 2025
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Short summary
Infrared CO2 cooling of the middle and upper atmosphere is increasing. We developed a new routine for very fast and accurate calculations of this cooling in general circulation models. The new algorithm accounts for non-local thermodynamic equilibrium and is about 1000 times faster than the standard matrix algorithms. It is based on advanced techniques for non-equilibrium emission calculations in stellar atmospheres, which so far have not been used in Earth’s and planetary atmospheres.
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