GMD Geoscientific Model Development GMD 1991-9603 Copernicus GmbH Göttingen, Germany 10.5194/gmd-4-419-2011 PREP-CHEM-SRC – 1.0: a preprocessor of trace gas and aerosol emission fields for regional and global atmospheric chemistry models Freitas S. R. 1 Longo K. M. 2 Alonso M. F. 1 Pirre M. 3 Marecal V. 4 Grell G. 5 Stockler R. 1 Mello R. F. 1 Sánchez Gácita M. 1 Center for Weather Forecasting and Climate Studies, INPE, Cachoeira Paulista, Brazil Earth System Science Center, INPE, São José dos Campos, Brazil Laboratoire de Physique et Chimie de l'Environnement et de l'Espace, CNRS-Université d'Orléans, Orléans, France Centre National de Recherches Météorologique/Groupe d'étude de l'Atmosphère Météorologique, Météo-France and CNRS, Toulouse, France Cooperative Institute for Research in Environmental Sciences (CIRES) and NOAA Earth Systems Research Laboratory (ESRL), USA 10 05 2011 4 2 419 433 This is an open-access article ditributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. This article is available from http://www.geosci-model-dev.net/4/419/2011/gmd-4-419-2011.html The full text article is available as a PDF file from http://www.geosci-model-dev.net/4/419/2011/gmd-4-419-2011.pdf

The preprocessor PREP-CHEM-SRC presented in the paper is a comprehensive tool aiming at preparing emission fields of trace gases and aerosols for use in atmospheric-chemistry transport models. The considered emissions are from the most recent databases of urban/industrial, biogenic, biomass burning, volcanic, biofuel use and burning from agricultural waste sources. For biomass burning, emissions can be also estimated directly from satellite fire detections using a fire emission model included in the tool. The preprocessor provides emission fields interpolated onto the transport model grid. Several map projections can be chosen. The inclusion of these emissions in transport models is also presented. The preprocessor is coded using Fortran90 and C and is driven by a <i>namelist</i> allowing the user to choose the type of emissions and the databases.

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