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Centre for Atmospheric Science

Box model testing of organic partitioning model

Within CAS we are developing a partitioning scheme to describe the formation and behaviour of the organic fraction of atmospheric aerosol (link to sub-pages i) a) and i) d)) within the NERC-funded QUAAC and EU FP6-funded EUCAARI projects. Within QUAAC, we are assisting colleagues at the University of Leeds to implement the Common Reactive Intermediates (CRI) reduced atmospheric oxidation scheme within the Kinetic Pre-Processor (KPP) programme.
The identification of organic components which may partition to the ambient aerosol (link to sub-page i) d)) and the National Centre for Atmospheric Sciences (NCAS)-funded activity incorporating them into the reduced partitioning framework (link to sub-page i) a)) will enable coupling of a realistic description of organic aerosol to the gas phase oxidation of SOA precursors.
It is the intention within CAS to extend the approach taken within the development of the coupled reactive halogen model (link to sub-page ii) a)), incorporating major inorganic semi-volatile components by parameterisations derived from ADDEM, to incorporate the organic partitioning scheme into the coupled microphysical and chemical model. This will enable detailed testing of the impacts of organic partitioning on aerosol particle property evolution. Such evaluation will improve our confidence in the use of the organic partitioning scheme in large-scale models. Personnel participating in this activity to be confirmed!