Atmos. Chem. Phys. Discuss., 5, 11413-11487, 2005
www.atmos-chem-phys-discuss.net/5/11413/2005/
doi:10.5194/acpd-5-11413-2005
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This discussion paper has been under review for the journal Atmospheric Chemistry and Physics (ACP). Please refer to the corresponding final paper in ACP.
Conceptual study on nucleation burst evolution in the convective boundary layer – Part I: Modelling approach
O. Hellmuth
Modelling Department, Institute for Tropospheric Research, Permoser Str. 15, 04318 Leipzig, Germany

Abstract. A high-order modelling approach to interprete 'continental-type' particle formation bursts in the anthropogenically influenced convective boundary layer (CBL) is proposed. The model considers third-order closure for planetary boundary layer turbulence, sulfur and ammonia chemistry and aerosol dynamics. In part I of the present paper, previous observations of ultrafine particle evolution are reviewed, model equations are derived, the model setup for a conceptual study on binary and ternary homogeneous nucleation is defined, and shortcomings of process parameterization are discussed. In subsequent parts of the paper simulation results obtained within the framework of a conceptual study on the CBL evolution and new particle formation (NPF) will be presented and compared with observational findings.

Citation: Hellmuth, O.: Conceptual study on nucleation burst evolution in the convective boundary layer – Part I: Modelling approach, Atmos. Chem. Phys. Discuss., 5, 11413-11487, doi:10.5194/acpd-5-11413-2005, 2005.
 
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