References

GMD

Geoscientific Model Development

GMD

Geosci. Model Dev.

1991-9603

Copernicus Publications

Göttingen, Germany

10.5194/gmd-7-2653-2014

The photolysis module JVAL-14, compatible with the MESSy standard, and the JVal PreProcessor (JVPP)

Sander

https://orcid.org/0000-0001-6479-2092

¹ Jöckel

https://orcid.org/0000-0002-8964-1394

² Kirner

https://orcid.org/0000-0001-5668-6177

³ Kunert

A. T.

https://orcid.org/0000-0002-2163-8973

¹ ⁵ Landgraf

⁴ Pozzer

https://orcid.org/0000-0003-2440-6104

Air Chemistry Department, Max-Planck Institute of Chemistry, P.O. Box 3060, 55020 Mainz, Germany

Deutsches Zentrum für Luft- und Raumfahrt (DLR), Institut für Physik der Atmosphäre, Oberpfaffenhofen, 82230 Wessling, Germany

Steinbuch Centre for Computing, Karlsruhe Institute of Technology, P.O. Box 3640, 76021 Karlsruhe, Germany

Netherlands Institute for Space Research (SRON), Utrecht, the Netherlands

now at: Multiphase Chemistry Department, Max-Planck Institute of Chemistry, P.O. Box 3060, 55020 Mainz, Germany

13 11 2014

7 6 2653 2662

2014

This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/3.0/

This article is available from https://gmd.copernicus.org/articles/7/2653/2014/gmd-7-2653-2014.html

The full text article is available as a PDF file from https://gmd.copernicus.org/articles/7/2653/2014/gmd-7-2653-2014.pdf

We present version 14 of the photolysis module JVAL. Taking atmospheric conditions as input, JVAL calculates photolysis rate coefficients, i.e. the speed of dissociation of atmospheric molecules in the sunlight. Computational efficiency is obtained through the use of parameters for polynomial curve fitting and lookup tables. Physical changes compared to the previous version include a parameterization of the Lyman-alpha absorption, and an update of the UV/VIS cross sections to the most recent recommended values. JVAL also includes the auxiliary program JVPP (JVal PreProcessor) which pre-calculates these parameters based on the absorption cross sections and quantum yields of the atmospheric molecules. It is possible to use JVAL either as a stand-alone program or as a module inside the Modular Earth Submodel System (MESSy). JVAL is a community model published under the GNU General Public License.

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