What's new?

• [2023/06]: CHIMERE Workshop in Paris on June 22 and 23, 2023
• [2022/11]: Release of emiSURF_v2020r4
• [2022/09]: Wikipedia CHIMERE web pages [FR], [ENG]
• [2022/09]: Documentation "How is the code distributed?" [FR] [ENG]
• [2021/11]: Release of the v2020r3 version
• [2021/07]: Release of the v2020r2 version
• [2020/11]: Release of the v2020r1 version

2023 Workshop

• The CHIMERE workshop will take place on June 22 and 23, 2023 at the Sorbonne Universite Campus (UPMC) in the center of Paris.
  • 4, place Jussieu, 75005 Paris, Metro line 7 , stop Jussieu.
  • Rotonde 44-45, first floor, room 102 (Centre Internationale des Conferences)
• The Workshop Agenda is available here:

New functionalities in v2020 version

1. WRF-CHIMERE online coupled model: The model can be used offline (with interfaces for ECMWF, WRF) or online coupled with WRF, for direct and indirect aerosol effects. Please read the WRF public notice
2. Natural emissions: with the addition of dimethyl sulfide, new schemes for sea-salt, improvements for mineral dust and biomass burning and addition of NOx from lightning.
3. Aerosols chemistry: with the addition of the SOAP thermodynamical model, as well as Volatility Basis Set scheme and the new H2O aerosol scheme for organic aerosols
4. Subgrid scale variability: for cells with anthropogenic emissions with several activity sectors, it is possible to have pollutant concentrations for each.
5. Vertical transport: Updated strategy for vertical advection of pollutants and implementation of the Despres and Lagoutiere (1999) antidiffusive advection scheme

Open positions

1. Post-doc position: Numerical modeling for hemispheric transport, Escalair project, coord. Romain Pennel,
2. Post-doc position: WRF-chimere modelling in mountainous areas (Chile, Alps), Netdesa project, coord. Laurent Menut,

Hemispheric domain

General presentation

• CHIMERE is an open source multi-scale chemistry-transport model designed to produce (i) accurate analysis of pollution episodes, (ii) daily forecasts of ozone, aerosols and other pollutants, (iii) long-term simulations (entire seasons or years) for emission control scenarios.
• CHIMERE runs over a range of spatial scale, from the hemispheric to the urban scale with resolutions from 1km to several degrees.
• CHIMERE has many different options for simulations which make it also a powerful research tool for testing parameterizations. CHIMERE is a parallel model that has been tested on machines ranging from desktop PCs running the GNU/Linux operating system, to massively parallel supercomputers (HPCD at ECMWF).
• On this server, documentation and source codes are free to access. The model is proposed with a complete environment: global model climatologies for boundary conditions, programs for emissions (anthropogenic with emisurf, biomass burning).
• To learn how to use and modify the model, training sessions are organized once a year

Reference papers

• Online coupling
  
  • Tuccella P., et al., Implementation of aerosol-cloud interaction within WRF-CHIMERE online coupled model: evaluation and investigation of the indirect radiative effect from anthropogenic emission reduction on the Benelux, Atmosphere 2019, 10, 20; doi:10.3390/atmos10010020,
  • Briant, R. et al., Aerosol-radiation interaction modelling using online coupling between the WRF 3.7.1 meteorological model and the CHIMERE 2016 chemistry-transport model, through the OASIS3-MCT coupler, Geosci. Model Dev., 10, 927-944, doi:10.5194/gmd-10-927-2017, 2017,
• Model overviews
  
  • Menut L., B. Bessagnet, R.Briant, A.Cholakian, F.Couvidat, S.Mailler, R.Pennel, G.Siour, P.Tuccella, S.Turquety, and M.Valari, The CHIMERE v2020r1 online chemistry-transport model, Geoscientific Model Development, 14, 6781-6811, 2021, .
  • Mailler S. et al., CHIMERE-2017: from urban to hemispheric chemistry-transport modeling , Geosci. Model Dev., 10, 2397-2423, https://doi.org/10.5194/gmd-10-2397-2017, , 2017

The model is used in research institutes and in operational centers for forecast:

• France and Europe with .
• Europe with Copernicus Atmospheric Monitoring Service (CAMS)
• Italy: University of L'Aquila - CETEMPS
• Belgium: IRCELINE
• The Netherlands: KNMI
• South America and Argentina: CONAE
• In France and for specific regions: Airparif, AtmoSud, AtmoGrandEst, Air Normand
• In Europe and for specific regions: Il modello previsionale kAIROS (Italy)

In order to know about or contact the developers.