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Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
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Discussion papers | Copyright
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Model description paper 30 Aug 2018

Model description paper | 30 Aug 2018

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This discussion paper is a preprint. It is a manuscript under review for the journal Geoscientific Model Development (GMD).

Two new submodels for the Modular Earth Submodel System (MESSy): New Aerosol Nucleation (NAN) and small ions (IONS) version 1.0

Sebastian Ehrhart1, Eimear M. Dunne2,3, Hanna E. Manninen4, Tuomo Nieminen5, Jos Lelieveld1, and Andrea Pozzer1 Sebastian Ehrhart et al.
  • 1Max Planck Institute for Chemistry, Hahn-Meitner-Weg 1, 55128 Mainz, Germany
  • 2Department of Geography, University of Cambridge, Cambridge, UK
  • 3Finnish Meteorological Institute, Atmospheric Research Centre of Eastern Finland, P.O. Box 1627, 70211 Kuopio, Finland
  • 4Experimental Physics Department, CERN, 1211 Geneva, Switzerland
  • 5Department of Applied Physics, University of Eastern Finland, PO Box 1627, 70211 Kuopio, Finland

Abstract. Two new submodels for the Modular Earth Submodel System (MESSy) were developed. The New Aerosol Nucleation submodel (NAN) includes new parameterisations of aerosol particle formation rates published in recent years. These parameterisations include ion-induced nucleation and nucleation of pure organic species. NAN calculates the rate of new particle formation based on the aforementioned parameterisations for aerosol submodels in the ECHAM/MESSy Atmospheric chemistry - Climate (EMAC) model. The Ion pair production rate, needed to calculate the ion-induced or -mediated nucleation, is described using the new submodel IONS, which provides ion pair production rates for other submodels within the MESSy framework. Both new submodels were tested in EMAC simulations. These simulations showed good agreement with ground based observations.

Sebastian Ehrhart et al.
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Status: final response (author comments only)
Status: final response (author comments only)
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Sebastian Ehrhart et al.
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