A size-composition resolved aerosol model for simulating the dynamics of externally mixed particles: SCRAM (v 1.0)
The Size-Composition Resolved Aerosol Model (SCRAM) for simulating the dynamics of externally mixed atmospheric particles is presented. This new model classifies aerosols by both composition and size, based on a comprehensive combination of all chemical species and their mass-fraction sections. All...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2015-06-01
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| Series: | Geoscientific Model Development |
| Online Access: | http://www.geosci-model-dev.net/8/1595/2015/gmd-8-1595-2015.pdf |
| Summary: | The Size-Composition Resolved Aerosol Model (SCRAM) for simulating the
dynamics of externally mixed atmospheric particles is presented. This new
model classifies aerosols by both composition and size, based on a
comprehensive combination of all chemical species and their mass-fraction
sections. All three main processes involved in aerosol dynamics (coagulation,
condensation/evaporation and nucleation) are included. The model is first
validated by comparison with a reference solution and with results of
simulations using internally mixed particles. The degree of mixing of
particles is investigated in a box model simulation using data representative
of air pollution in Greater Paris. The relative influence on the mixing state
of the different aerosol processes (condensation/evaporation, coagulation)
and of the algorithm used to model condensation/evaporation (bulk
equilibrium, dynamic) is studied. |
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| ISSN: | 1991-959X 1991-9603 |