Geoscientific Model Development
Geoscientific Model Development
GMD
Articles | Volume 16, issue 24
Articles | Volume 16, issue 24
https://doi.org/10.5194/gmd-16-7433-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-16-7433-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 16, issue 24
Development and technical paper
 | 
21 Dec 2023
Development and technical paper |  | 21 Dec 2023

Implementation and evaluation of updated photolysis rates in the EMEP MSC-W chemistry-transport model using Cloud-J v7.3e

Willem E. van Caspel, David Simpson, Jan Eiof Jonson, Anna M. K. Benedictow, Yao Ge, Alcide di Sarra, Giandomenico Pace, Massimo Vieno, Hannah L. Walker, and Mathew R. Heal

Supplement

https://doi.org/10.5194/gmd-16-7433-2023-supplement

Data sets

Atom: Global Modeled and CAFS Measured Cloudy and Clear Sky Photolysis Rates, 2016 S. Hall, K. Ullmann, M. Prather, C. Flynn, L. Murray, A. Fiore, G. Correa, S. Strode, S. Steenrod, J.-F. Lamarque, J. Guth, B. Josse, J. Flemming, V. Huijnen, N. Abraham, and A. Archibald https://doi.org/10.3334/ORNLDAAC/1651

Dataset supporting the article: Implementation and evaluation of updated photolysis rates in the EMEP MSC-W chemical transport model using Cloud-J v7.3e Willem van caspel, David Simpson, Anna Benedictow, Yao Ge, Alcide di Sarra, Giandomenico Pace, Massimo Vieno, Hannah Walker, Mathew Heal, and Jan Eiof Jonson https://doi.org/10.5281/zenodo.8282997

Global emission fields of air pollutants and GHGs (https://iiasa.ac.at/web/home/research/researchPrograms/air/ECLIPSEv6b.html) IIASA https://iiasa.ac.at/models-tools-data/global-emission-fields-of-air-pollutants-and-ghgs

Model code and software

OpenSource v5.0 (202310) (5.0) EMEP MSC-W https://doi.org/10.5281/zenodo.8431553

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Short summary
Radiation coming from the sun is essential to atmospheric chemistry, driving the breakup, or photodissociation, of atmospheric molecules. This in turn affects the chemical composition and reactivity of the atmosphere. The representation of photodissociation effects is therefore essential in atmospheric chemistry modeling. One such model is the EMEP MSC-W model, for which a new way of calculating the photodissociation rates is tested and evaluated in this paper.
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