1. The chemistry-transport model CHIMERE (IPSL/LMD)‏
A communitary model in free access
Developed in France, used in the whole Europe.
CHIMERE is a chemistry-transport model for the calculation of concentrations fields as: ozone, NOx, COVs, aerosols, dust... at the regional scale, for long periods (several years) wuth an hourly resolution
A short history of the tool:
1997: First version: the Paris area in a box-model
1998: The first experimental web site for the ESQUIF field campaign
1999: cartesian grids
2001: European experimental forecast with PIONEER project
2004: implementation of aerosol module
2006: development of the parallel version of the code

2. The chemistry-transport model CHIMERE (IPSL/LMD)‏
As a communautary tool, CHIMERE represents:
More than 100 users
More than 20 institutes are using CHIMERE for daily forecast
More than 35 institutes for research
More than 50 papers in peer-reviewed journals
Involved in numerous European projects such as GEMS, PROMOTE, City-Delta, Euro-Delta, CIRCE, AMMA, GEOMON, NATAIR.
Used for analysis, forecast, pollution peaks and trends, direct or adjoijnt modelling, data assimilation.
Vertical cross-section of a dust event over Ukraine (March 2007) [Bessagnet et al., 2008]
Example of daily forecast
experimental (at LMD):
- France (GEMS)‏
- Africa, Atlantic and Europe: CHIMERE-DUST for minreal dust
operational: PREVAIR french nationla plat-form (INERIS)‏
CHIMERE users in Europe
One of the forecast web sites

3. The chemistry-transport model CHIMERE (IPSL/LMD)‏
2008 Current developments:
Open the model to other domains than Europe: A “meso-scale window in any place of the world”
- Several meteorological forcings: ARPEGE, NCEP, MM5, WRF, ECMWF/IFS for analysis and forecast
- Implementation of LMDz/IPCC for regional climate changes studies
- Several boundary conditions: gas, aerosols, dust and fires in development
- Biogenic and anthropogenic emissions: for Europe only to 'regional windows' everywhere in the world with EDGAR and MEGAN databases.
- Implementation of systematic comparisons to satellite products (AOT, Scattering Ratio with CALIOP)‏
Increase the small scale knowledge: Sub-grid scale variability, urban processes modelling for health impact studies