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  Simulation of organics in the atmosphere: evaluation of EMACv2.54 with the Mainz Organic Mechanism (MOM) coupled to the ORACLE (v1.0) submodel

Pozzer, A., Reifenberg, S. F., Kumar, V., Franco, B., Kohl, M., Taraborrelli, D., et al. (2022). Simulation of organics in the atmosphere: evaluation of EMACv2.54 with the Mainz Organic Mechanism (MOM) coupled to the ORACLE (v1.0) submodel. Geoscientific Model Development, 15(6), 2673-2710. doi:10.5194/gmd-15-2673-2022.

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 Creators:
Pozzer, Andrea1, Author              
Reifenberg, Simon F.1, Author              
Kumar, Vinod2, Author              
Franco, Bruno3, Author
Kohl, Matthias1, Author              
Taraborrelli, Domenico3, Author
Gromov, Sergey1, Author              
Ehrhart, Sebastian1, Author              
Jöckel, Patrick3, Author
Sander, Rolf3, Author
Fall, Veronica3, Author
Rosanka, Simon3, Author
Karydis, Vlassis3, Author
Akritidis, Dimitris3, Author
Emmerichs, Tamara3, Author
Crippa, Monica3, Author
Guizzardi, Diego3, Author
Kaiser, Johannes W.3, Author
Clarisse, Lieven3, Author
Kiendler-Scharr, Astrid3, Author
Tost, Holger3, AuthorTsimpidi, Alexandra3, Author more..
Affiliations:
1Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society, ou_1826285              
2Satellite Remote Sensing, Max Planck Institute for Chemistry, Max Planck Society, ou_1826293              
3external, ou_persistent22              

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 Abstract: An updated and expanded representation of organics in the chemistry general circulation model EMAC (ECHAM5/MESSy for Atmospheric Chemistry) has been evaluated. First, the comprehensive Mainz Organic Mechanism (MOM) in the submodel MECCA (Module Efficiently Calculating the Chemistry of the Atmosphere) was activated with explicit degradation of organic species up to five carbon atoms and a simplified mechanism for larger molecules. Second, the ORACLE submodel (version 1.0) now considers condensation on aerosols for all organics in the mechanism. Parameterizations for aerosol yields are used only for the lumped species that are not included in the explicit mechanism. The simultaneous usage of MOM and ORACLE allows an efficient estimation of not only the chemical degradation of the simulated volatile organic compounds but also the contribution of organics to the growth and fate of (organic) aerosol, with the complexity of the mechanism largely increased compared to EMAC simulations with more simplified chemistry. The model evaluation presented here reveals that the OH concentration is reproduced well globally, whereas significant biases for observed oxygenated organics are present. We also investigate the general properties of the aerosols and their composition, showing that the more sophisticated and process-oriented secondary aerosol formation does not degrade the good agreement of previous model configurations with observations at the surface, allowing further research in the field of gas–aerosol interactions.

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Language(s): eng - English
 Dates: 2022-04-01
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000776575300001
DOI: 10.5194/gmd-15-2673-2022
 Degree: -

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Title: Geoscientific Model Development
  Other : Geosci. Model Dev.
  Abbreviation : GMD
Source Genre: Journal
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Publ. Info: Göttingen : Copernicus Publ.
Pages: - Volume / Issue: 15 (6) Sequence Number: - Start / End Page: 2673 - 2710 Identifier: ISSN: 1991-959X
CoNE: https://pure.mpg.de/cone/journals/resource/1991-959X