Use of CHIMERE in the Transboundary Air Pollution Negociations framework

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• Use of CHIMERE in the Transboundary Air Pollution
  Negociations framework
• Laurence ROUÏL
• Direction des Risques chroniques

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Introduction and Context

• INERIS acts as a technical support of the
  Ministry of Ecology
• Support for the definition of national
  environmental regulations,
• Participation to European normative work,
• Participation to European working groups devoted
  the definition of future policies
• Within the framework of air quality.
• Since 1979 Convention on Long Range
  Transboundary Air Pollution (CLRTAP) UN -ECE
• Since 2002-2003 until july 2005 CAFE program
  (EU) definition of the  Air Quality Thematic
  Strategy  defining the main purposes of the
  future european legislation
• Since 2005 until July 2006 Review of the
  National Emission Ceilings Directive
• Several working groups (EU and UN-ECE) devoted to
  air quality monitoring (measurements) and
  normative aspects

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UN-ECE Convention on Long Range Transboundary
Air Pollution, INERIS involvment
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Use of Air quality modelling..
Air quality mapping

• Acidification/Eutrophisation effects
• Ground level ozone
• POPs and HM
• PM purposes (since 2004)

Trends analysis

• As a complementary tool of measurement stations

Integrated Assessment Modelling (IAM)

• Evaluation of the environmental and health
  effects of Air Quality Policies with respect to
  their cost
• Sources/receptor matrices calculations all over
  Europe
• Uncertainties analysis

EMEP (MSC-West) and RAINS (IIASA) models are the
 official tools in the European framework
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French contribution for AQ modelling
CHIMERE is used since 2001 by INERIS to develop
the french expertise and involvment on the
modelling aspects.

• To check the EMEP results for base cases
  (current situation) but also for emission
  reduction scenario runs (2010-2020) through
  models intercomparison exercises
• TFMM intercomparison project (TNO) comparison
  against observations
• City-Delta project (CAFE) downscaling purposes
• Eurodelta Project (TFMM) source/receptor
  matrices evaluation
• To help to define alternative emission reduction
  policies
• Efficiency of the national emission ceilings
  approach?
• Relevance of sectoral approach?
• Geographical heterogeneity
• To contribute to the development of European
  tools
• See City-Delta consequences

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TFMM intercomparison exercise - 2003

• Organized by the TNO (NL)
• Focused on Ozone and PM 50km50km modelling.
• Models involved EMEP, LOTOS (NL), REM3 (DE),
  MATCH (S), DEHM (D), CHIMERE (F)

Intercomparaison TFMM (TNO)-NMSE O3
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Intercomparaison TFMM (TNO)-Corrélation O3
Resultats O3.
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Intercomparaison TFMM (TNO)
PM10 (a) corrélations (b) scatter
plots/observations
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CITY-DELTA exercise

• Organized by IIASA and JRC (Ispra) for the CAFE
  program
• Focused on Ozone and PM 50km50km regional
  modelling and 5km5km local modelling.
• Base case and emission reducion scenarios
• Models involved in the  part 2  EMEP, LOTOS
  (NL), REM3 (DE), MATCH (S), CHIMERE (F) to model
  the situation over Paris, Milan Prague and Berlin
  areas

• Consequences
• Model intercomparison over cities areas
• Evaluation of the robustness of the modelling
  approach for regulatory purposes
• Statistical definition of  urban signals , for
  PPM2.5, to be implemented in RAINS as a
  correction of regional EMEP results over cities
  areas

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EURODELTA exercise

• Organized by the TFMM and MSC-W
• Focused on Ozone and PM 50km50km regional
  modelling and sources/receptor matrices
  computations
• Models involved in the  part 2  EMEP, LOTOS
  (NL), REM3 (DE), MATCH (S), CHIMERE (F)

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Sensitive areas - Ozone (2000-2020)
UK Italy Benelux Spain Big Cities
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NOx total deposition -  hot spots  computed
with MATCH - Lower values for LOTOS -CHIMERE
and EMEP very similar
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CHIMERE - EMEP O3 - 2020 Italian reduction
NOx scen
VOC scen
Differences from the  base case  transposed to
the others
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Further applications french analysis of
emission reduction policies

• Looking for new emission reduction hypothesis
  (2010-2020), as an alternative solution to
  national emission ceilings
• French runs made with CHIMERE
• .Compared to results given by  EMEP-Unified 
• Sectoral approach cooperation with CITEPA and
  economists team

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Example National scenarios for 2010
Pollutants SO2, NOx, COV, NH3 Référence
2000 CLE Current Legislation Emissions IIASA
(Autriche) GOT NEC Goteborg Protocol outside
EU OPTINEC french emission projections for
2010 (CITEPA)
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Mean of daily ozone peaks. Consequences for a
2003 year like
180-190 mg/m3
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Could a sectoral approachbe efficient?.