Journal cover Journal topic
Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

IF value: 5.240
IF5.240
IF 5-year value: 5.768
IF 5-year
5.768
CiteScore value: 8.9
CiteScore
8.9
SNIP value: 1.713
SNIP1.713
IPP value: 5.53
IPP5.53
SJR value: 3.18
SJR3.18
Scimago H <br class='widget-line-break'>index value: 71
Scimago H
index
71
h5-index value: 51
h5-index51
Volume 13, issue 11
Geosci. Model Dev., 13, 5507–5548, 2020
https://doi.org/10.5194/gmd-13-5507-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Geosci. Model Dev., 13, 5507–5548, 2020
https://doi.org/10.5194/gmd-13-5507-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Model description paper 12 Nov 2020

Model description paper | 12 Nov 2020

Description and evaluation of a detailed gas-phase chemistry scheme in the TM5-MP global chemistry transport model (r112)

Stelios Myriokefalitakis1, Nikos Daskalakis2, Angelos Gkouvousis3,1, Andreas Hilboll2,, Twan van Noije4, Jason E. Williams4, Philippe Le Sager4, Vincent Huijnen4, Sander Houweling5,6, Tommi Bergman7, Johann Rasmus Nüß2, Mihalis Vrekoussis2,8,9, Maria Kanakidou2,3, and Maarten C. Krol10,11 Stelios Myriokefalitakis et al.
  • 1Institute for Environmental Research and Sustainable Development (IERSD), National Observatory of Athens, Penteli, Greece
  • 2Institute of Environmental Physics, University of Bremen, Bremen, Germany
  • 3Environmental Chemical Processes Laboratory (ECPL), Department of Chemistry, University of Crete, Heraklion, Greece
  • 4Royal Netherlands Meteorological Institute (KNMI), De Bilt, the Netherlands
  • 5Department of Earth Sciences, Vrije Universiteit Amsterdam, the Netherlands
  • 6SRON Netherlands Institute for Space Research, Utrecht, the Netherlands
  • 7Finnish Meteorological Institute, Climate System Research, Helsinki, Finland
  • 8Center for Marine Environmental Sciences, University of Bremen, Bremen, Germany
  • 9Energy, Environment and Water Research Center (EEWRC), The Cyprus Institute, Cyprus
  • 10Department of Environmental Sciences, Wageningen University, Wageningen, the Netherlands
  • 11Institute for Marine and Atmospheric Research (IMAU), Utrecht University, Utrecht, the Netherlands
  • deceased, 25 March 2020

Abstract. This work documents and evaluates the tropospheric gas-phase chemical mechanism MOGUNTIA in the three-dimensional chemistry transport model TM5-MP. Compared to the modified CB05 (mCB05) chemical mechanism previously used in the model, MOGUNTIA includes a detailed representation of the light hydrocarbons (C1–C4) and isoprene, along with a simplified chemistry representation of terpenes and aromatics. Another feature implemented in TM5-MP for this work is the use of the Rosenbrock solver in the chemistry code, which can replace the classical Euler backward integration method of the model. Global budgets of ozone (O3), carbon monoxide (CO), hydroxyl radicals (OH), nitrogen oxides (NOx), and volatile organic compounds (VOCs) are analyzed, and their mixing ratios are compared with a series of surface, aircraft, and satellite observations for the year 2006. Both mechanisms appear to be able to satisfactorily represent observed mixing ratios of important trace gases, with the MOGUNTIA chemistry configuration yielding lower biases than mCB05 compared to measurements in most of the cases. However, the two chemical mechanisms fail to reproduce the observed mixing ratios of light VOCs, indicating insufficient primary emission source strengths, oxidation that is too fast, and/or a low bias in the secondary contribution to C2–C3 organics via VOC atmospheric oxidation. Relative computational memory and time requirements of the different model configurations are also compared and discussed. Overall, the MOGUNTIA scheme simulates a large suite of oxygenated VOCs that are observed in the atmosphere at significant levels. This significantly expands the possible applications of TM5-MP.

Publications Copernicus
Download
Short summary
This work documents and evaluates the detailed tropospheric gas-phase chemical mechanism MOGUNTIA in the three-dimensional chemistry transport model TM5-MP. The Rosenbrock solver, as generated by the KPP software, is implemented in the chemistry code, which can successfully replace the classical Euler backward integration method. The MOGUNTIA scheme satisfactorily simulates a large suite of oxygenated volatile organic compounds (VOCs) that are observed in the atmosphere at significant levels.
This work documents and evaluates the detailed tropospheric gas-phase chemical mechanism...
Citation