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Volume 11, issue 1 | Copyright

Special issue: European Integrated Project on Aerosol-Cloud-Climate and Air...

Atmos. Chem. Phys., 11, 43-51, 2011
https://doi.org/10.5194/acp-11-43-2011
© Author(s) 2011. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 03 Jan 2011

Research article | 03 Jan 2011

SOSA – a new model to simulate the concentrations of organic vapours and sulphuric acid inside the ABL – Part 1: Model description and initial evaluation

M. Boy1, A. Sogachev2, J. Lauros1, L. Zhou1, A. Guenther3, and S. Smolander1 M. Boy et al.
  • 1University of Helsinki, Department of Physical Sciences, P.O. Box 48, 00014 Helsinki, Finland
  • 2Wind Energy Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark. Building 118, P.O. Box 49, 4000, Roskilde, Denmark
  • 3ACD, NCAR, P.O. Box 3000, 80305 Boulder, Colorado, USA

Abstract. Chemistry in the atmospheric boundary layer (ABL) is controlled by complex processes of surface fluxes, flow, turbulent transport, and chemical reactions. We present a new model SOSA (model to simulate the concentration of organic vapours and sulphuric acid) and attempt to reconstruct the emissions, transport and chemistry in the ABL in and above a vegetation canopy using tower measurements from the SMEAR II at Hyytiälä, Finland and available soundings data from neighbouring meteorological stations. Using the sounding data for upper boundary condition and nudging the model to tower measurements in the surface layer we were able to get a reasonable description of turbulence and other quantities through the ABL. As a first application of the model, we present vertical profiles of organic compounds and discuss their relation to newly formed particles.

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