Submitted as: development and technical paper
10 Mar 2022
Submitted as: development and technical paper | 10 Mar 2022
Status: this preprint is currently under review for the journal GMD.

MUNICH v2.0: A street-network model coupled with SSH-aerosol (v1.2) for multi-pollutant modelling

Youngseob Kim1, Lya Lugon1,a, Alice Maison1,2, Thibaud Sarica1, Yelva Roustan1, Myrto Valari3, Yang Zhang4, Michel André5, and Karine Sartelet1 Youngseob Kim et al.
  • 1CEREA, École des Ponts, EDF R&D, Marne-la-Vallée, France
  • 2Université Paris-Saclay, INRAE, AgroParisTech, UMR EcoSys, Thiverval-Grignon, France
  • 3Laboratoire de Météorologie Dynamique, Sorbonne Université, École Polytechnique, IPSL, École Normale Supérieure, CNRS, Paris, France
  • 4Department of Civil and Environmental Engineering, Northeastern University, Boston, MA, USA
  • 5Department COSYS, Université Gustave Eiffel, Bron, France
  • anow at: Max-Planck-Institut for Meteorology, Hamburg, Germany

Abstract. A new version of the street-network model, Model of Urban Network of Intersecting Canyons and Highways version 2.0 (MUNICH v2.0) is presented. The comprehensive aerosol model SSH-aerosol is implemented in MUNICH v2.0 to simulate the street concentrations of multi pollutants including secondary aerosols. The implementation uses the Application Programming Interface (API) technology so that the SSH-aerosol version may be easily updated. New parameterisations are also introduced in MUNICH v2.0, including a non-stationary approach to model reactive pollutants, particle deposition and resuspension, and a parameterisation of the wind at roof level. A test case over a Paris suburb is presented for model evaluation and illustration of the impact of the new functionalities. The implementation of SSH-aerosol leads to an increase of 11 % of PM10 concentration, because of secondary aerosol formation. Using the non-stationary approach rather than the stationary one leads to a decrease in NO2 concentration by 16 %. The impact of particle deposition and resuspension on pollutant concentrations in the street canyons is low.

Youngseob Kim et al.

Status: open (until 30 May 2022)

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Youngseob Kim et al.

Youngseob Kim et al.


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Short summary
This paper presents the last version of the street-network model, MUNICH v2.0. The description of MUNICH v1.0, which modelled gas-phase pollutants in street network, was published in GMD in 2018. Since then, major modifications were implemented in MUNICH. The comprehensive aerosol model SSH-aerosol is coupled to MUNICH to simulate the concentrations of primary and secondary aerosols. New parameterisations are also introduced. Test cases are defined to illustrate the new model functionalities.