Introducing MOZART chemical mechanism into CATT-BRAMS: preliminary results
Karla
Longo, CPTEC/INPE, longo@cptec.inpe.br
(Presenting)
Saulo
Ribeiro de
Freitas, CPTEC/INPE, sfreitas@cptec.inpe.br
Leila
Maria Merc�
Albuquerque, CPTEC/INPE, leilamma@cptec.inpe.br
Pedro
Leite
Silva Dias, IAG-USP, CPTEC/INPE, pldsdias@master.iag.usp.br
Martin
Schultz, MPI-Hamburg, martin.schultz@dkrz.de
Guy
Brasseur, MPI-Hamburg, brasseur@dkrz.de
The chemical mechanism of MOZART (Model of OZone And Related chemical Traces) has been introduced into CATT-BRAMS (Coupled Aerosol and Tracer Transport model to the Brasilian Regional Atmospheric Modeling System). CATT-BRAMS is an on-line transport model fully consistent with the simulated atmospheric dynamics. The influence of convective transport by shallow and deep cumulus, wet and dry deposition, plume rise, the direct radiative effect of aerosols on the tracers' mass concentrations is accounted for. MOZART is a global chemical transport model designed to simulate the distribution of tropospheric ozone and its precursors, with a detailed chemical scheme for tropospheric ozone-nitrogen oxides-hydrocarbon chemistry, with 63 chemical species. Results of a first step off-line coupling will be shown. Furthermore, the progress of the fully coupled model development will be explored. This case study is based on data collected during the RACCI/SMOCC campaigns during the dry to wet 2002 season.