INERIS ongoing works for CITIZEN (2009)

1Bessagnet, B ; 1Meleux, F. ; 1,2Péré, J.-C. ; 1Colette,A; 1,3 Siour,G, 4Menut,L;1Rouïl, L.1) INERIS, France2) Laboratoire d'Aérologie, Université Paul Sabatier, France3) LISA, université Créteil, France4) LMD/IPSL, Palaiseau France

WP1: INERIS

1. Emissions (EMEP-INERIS emission inventory)

2. CHIMERE set-up for long term runs

3. Post-processing for budget computations

4. New zooming approach in CHIMERE

WP1: SET-UP of CHIMERE for the 1998-2007 simulations

• Upgrading of the meteorological pre-processing MM5 -> WRF Tests on parametrisations • PBL scheme, land surface model• Microphysics, convection• Spectral nudging intensityECMWF / IFS meteorological forcing

• European domain == GEMS-MACC domain covering EU-27 with a resolution of 0.5° or 0.25°.

• Zoom over large Benelux and Po valley domains: ~ 0.1°• Zoom over small Benelux and Po valley domains: ~ 0.05°

• Last chimere version chimere2008 • CHIMERE-DUST ??• with biogenic emissions from MEGAN• Fire emissions ?• updated SOA scheme• emissions from INERIS- EMEP 1998-2007 using 1999 PM emissions for 1998

WP1: SET-UP of CHIMERE for the 1998-2007 simulations

• We still have issues about boundary conditions :

• Which model ? Mozart or UiO

• Which set of pollutants ?

• Which horizontal resolution ? time step ?

• Which file format ?

Interface development.

Plan to run the 10-years period beginning 2010

WP1: Pollutant budgetsfor the 1998-2007 simulations

Outgoing vertical flux

Western flux

Eastern flux

Southern flux

Northern flux MEGACITY domain

Calcul of fluxes in each cells of the domain for budget calculations over Cityzen areas

import/export calculations over each domain selected and main cities.

Transport, chemistry and emission/deposition

WP1: CHIMERE horizontal stretched grid-The methodology is to refine the grid over a specific region (from 0.5° to 0.1° resolution)

- Constraint : Over the X (or Y) direction, number of Y (or X) points is constant

WP1: Testing « zooming » mesh over BENELUX

NO2 emissions (molec/cm2/s)

Ozone on 8 August 2003 [16:00]

Surface Ozone in ppb(August 2003)

• Meteorological fields at 0.5°

•Mass conservative

WP1: Testing « zooming » mesh over BENELUX

Regular coarse 0.5° to nest 0.1°resolution domains (1 way nesting)

« zooming approach » stretched mesh from 0.5° to 0.1°

More details in the « zooming »approaches

PM10 concentrations on8 August 2003 [16:00]

0.5°x0.5°

0.1°x0.1°

WP1: Next steps ...

• Long-term runs over 1998-2007 (beginning of 2010) Evaluation of the transport pathways (D1.2.2 – March 2010) Budget import/export fluxes Boundary conditions ? Focus on the NH3 emissions impact over Benelux

• Zooming approach (by the end of 2009)Meteorological forcing using low and high reolution Assessment of the added-value using the new zooming approach

compared to one-way nesting One-year simulation on 2003 article