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Atmos. Chem. Phys. Discuss., 5, 11413-11487, 2005
www.atmos-chem-phys-discuss.net/5/11413/2005/ doi:10.5194/acpd-5-11413-2005 © Author(s) 2005. This work is licensed under a Creative Commons License. |
Conceptual study on nucleation burst evolution in the convective boundary layer – Part I: Modelling approach
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.