EPAC - Modèles (EN)

FVM - Finite Volume Model

FVM is a three dimensional eulerian meteorological model using a terrain following grid with finite volume discretisation. The borders can be individually forced by large scale model results. It has also the ability to perform one-way nesting to refine some parts of the grid.

FVM provides an urban turbulence module which specifically simulates the effects of urban areas on the meteorology. It also includes a building module.

Software required is a Fortran 90 compiler.

Contacts : alain.clappier[at]live-cnrs.unistra.fr, nadege.blond[at]live-cnrs.unistra.fr

Gas chemistry no - Meteorology yes

EMISENS - Emissions Sensitivity Model

EMISENS is a model able to simulate road traffic emissions. The model has been designed to compute a total amount of emissions and distribute it in time and space using a methodology fully compatible at the same time with a top-down and a bottom-up approach.

The calculation of the emission are fast enough to allow the calculation of uncertainties (or sensitivities). The model formulation is based on a well known and well referenced methodology to facilitate the access of standard database for input parameters.

Software required is a Fortran 90 compiler.

Contacts : alain.clappier[at]live-cnrs.unistra.fr, nadege.blond[at]live-cnrs.unistra.fr

Top-down yes - Bottom-up yes - COPERT methodology yes/no – Uncertainty yes

CHIMERE

CHIMERE is a three dimensional eulerian model designed to produce daily forecasts of ozone, aerosols and other pollutants and make long-term simulations (entire seasons or years) for emission control scenarios. CHIMERE runs over a range of spatial scale from the regional scale (several thousand kilometers) to the urban scale (100-200 Km) with resolutions from 1-2 Km to 100 Km.

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). A minimal set of 1 Gb RAM is necessary.

Software required is a Fortran 90 compiler (ex : g95, ifort, pgf90 or xlf), some GNU utilities (gmake and gawk) and an MPI library. Graphical interfaces are available using the GrADS or GMT freewares.

Contact : nadege.blond[at]live-cnrs.unistra.fr
Other contact outside LIVE : chimere[at]lmd.polytechnique.fr

Transport yes - Turbulence yes - Gas chemistry yes - Aerosol chemistry yes - Meteorology no – Optimisation no – Uncertainty no

TAPOM

TAPOM (Transport and Air POllution Model) is a three dimensional eulerian model with terrain following mesh using the finite volume discretisation. It includes modules for transport, gaseous and aerosols chemistry, dry deposition and solar radiation. It takes into account the extinction of solar radiation by gases and aerosols in the gaseous chemistry calculation.

TAPOM also provides a very simple meteorology calculation for teaching purposes. Its chemical mecanism can be simplified and one can choose not to calculate the aerosols and/or the solar radiation.

Contact : alain.clappier[at]live-cnrs.unistra.fr

Transport yes - Turbulence yes - Gas chemistry yes - Aerosol chemistry yes - Meteorology no – Optimisation no – Uncertainty no

CIM

CIM is a one dimensional Canopy Interface Model (CIM). It is developed to evaluate the influence of obstacles on the atmosphere in the boundary layer. It includes urban parametrizations allowing the computation of wind speed, turbulent kinetic energy (TKE), temperature and humidity vertical profiles.

The obstacle porosities are used to weight several terms in the Navier-Stokes equations and have been introduced to prepare the coupling of mesoscale models like WRF or FVM with microscale models. A 1.5-order turbulence closure, using the TKE, is used in the model with adapations to make the equations coherent with the Prandtl and MOST theory over plane surfaces.The mixing length is evaluated to take into account the density of obstacles and height in the canopy layer.

Contact : nadege.blond[at]live-cnrs.unitra.fr

Transport no - Turbulence yes - Gas chemistry no - Aerosol chemistry no - Meteorology yes – Optimisation no – Uncertainty no

RIAT+

RIAT+ is a regional integrated assessment modelling tool, that helps policy makers and technicians to select optimal emission reduction measures to improve air quality at minimum cost. RIAT+ is built as an integrated modelling environment, using tabular/geographic data and simulation/optimization models. The methodology implemented in RIAT+ incorporates explicitly, in the input dataset, the specific features of the area under study; for this reason RIAT+ is a general approach, that (after input data preparation for a particular geographical area) can be applied to different regions in Europe.

Contact : nadege.blond[at]live-cnrs.unitra.fr

Transport no - Turbulence no - Gas chemistry no - Aerosol chemistry no - Meteorology no – Optimisation yes – Uncertainty no

INCA-Indoor

INCA-Indoor is a box model. It is developed to help to understand the indoor air quality. It accounts for physical and chemical processes: emission, adsorption, desorption, ventilation, filtration, deposition, and photochemistry. The chemical mechanism is based on SAPRC-07 mechanism that describes the oxidation processes of 640 VOC. H2O model is included to simulate SOA formation.

Contact : nadege.blond[at]live-cnrs.unitra.fr

Transport no - Turbulence no - Gas chemistry yes - Aerosol chemistry yes - Meteorology no – Optimisation no – Uncertainty yes