Atmospheric Chemistry and Physics
www.atmos-chem-phys.net
1680-7316
1680-7324
6
12
2006
10.5194/acp-6-4175-2006
http://www.atmos-chem-phys.net/6/4175/2006/
http://www.atmos-chem-phys.net/6/4175/2006/acp-6-4175-2006.html
http://www.atmos-chem-phys.net/6/4175/2006/acp-6-4175-2006.pdf
4175
4214
2006-09-21
Columnar modelling of nucleation burst evolution in the convective boundary layer – first results from a feasibility study <BR> Part I: Modelling approach
O. Hellmuth
Leibniz Institute for Tropospheric Research, Modelling Department, Permoserstrasse 15, 04318 Leipzig, Germany
A high-order modelling approach to interpret "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, sulphur and ammonia
chemistry as well as aerosol dynamics. In Paper I of four papers,
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 parameterisation are discussed. In the subsequent
Papers II, III and IV 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.
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