Implementation of the ISORROPIA-lite aerosol thermodynamics model into the EMAC chemistry climate model (based on MESSy v2.55): implications for aerosol composition and acidity

Milousis, Alexandros; Tsimpidi, Alexandra P.; Tost, Holger; Pandis, Spyros N.; Nenes, Athanasios; Kiendler-Scharr, Astrid; Karydis, Vlassis A.

doi:https://doi.org/10.5194/gmd-17-1111-2024

Articles | Volume 17, issue 3

https://doi.org/10.5194/gmd-17-1111-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

The Modular Earth Submodel System (MESSy) (ACP/GMD inter-journal...

https://doi.org/10.5194/gmd-17-1111-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 17, issue 3

Model evaluation paper

|

12 Feb 2024

Model evaluation paper |

| 12 Feb 2024

Implementation of the ISORROPIA-lite aerosol thermodynamics model into the EMAC chemistry climate model (based on MESSy v2.55): implications for aerosol composition and acidity

Alexandros Milousis, Alexandra P. Tsimpidi, Holger Tost, Spyros N. Pandis, Athanasios Nenes, Astrid Kiendler-Scharr, and Vlassis A. Karydis

Supplement

https://doi.org/10.5194/gmd-17-1111-2024-supplement

Model code and software

The Modular Earth Submodel System (2.55.2_842-isorropia-light), The MESSy Consortium https://doi.org/10.5281/zenodo.8379120

Short summary

This study aims to evaluate the newly developed ISORROPIA-lite aerosol thermodynamic module within the EMAC model and explore discrepancies in global atmospheric simulations of aerosol composition and acidity by utilizing different aerosol phase states. Even though local differences were found in regions where the RH ranged from 20 % to 60 %, on a global scale the results are similar. Therefore, ISORROPIA-lite can be a reliable and computationally effective alternative to ISORROPIA II in EMAC.