Outdoor air pollution


The research aims to develop tools and methods to design effective air pollution reduction strategies. These cover the European, regional, urban and neighborhood scales.

Research objectives

  • Simulate the links between emissions and pollutant concentrations

  • Simulate atmospheric dynamics

  • Develop decision support tools to reduce population exposure to air pollution.


  • CLIMAREA « Climate change: improving territorial planning of public institutions for adaptation to change » – 2019-2021. Coordinator : ATMO Auvergne Rhône Alpes.  Participants : French (Auvergne Rhône Alpes, Provence Alpes Côtes d’azure) and italian (Val d’Aosta, Piemonte, Liguria) air quality agencies.
  • O3AuRA « Tropospheric ozone: State of knowledge – Actions of reduction » – 2020-2021. Coordinator : ATMO Auvergne Rhône Alpes.  
  • OPERA (Projet EU Life+ Environment Policy and Governance)  “Operational Procedure for Emission Reduction Assessment: an integrated assessment methodology to plan local cost-effective air quality policies harmonized with national and European actions” - 2009-2013. Coordinator: ARPA. Participants : ARPA, Università degli Studi di Brescia, TerrAria S.r.l. (I), CNRS, University of Strasbourg. Contrat : L. Marl-Hummel.
  • APPRAISAL (EU FP7), « Integrated assessment for regional and local air quality policies » - 2012-2015. Coordinator: Universita degli Studi de Brecia. Participants : Agenzia regionale prevenzione e ambiente dell’ Emilia-Romagna (ARPA), Terraria (s.r.l), Università degli Studi di Brescia (UNIBS), Air quality Agency ASPA, Joint Research Center (JRC), CNRS, , University of Strasbourg.
  • FAIRMODE (European Commission Joint Research Centre JRC) “Forum for Air quality Modeling” depuis 2007.

Few publications

  • Thunis, P., A. Clappier, A. de Meij, E. Pisoni, B. Bessagnet and L. Tarrason 2021: Why is the city’s responsibility for its air pollution often underestimated? A focus on PM2.5, Atmos. Chem. Phys., 21, 18195–18212.
  • Clappier, A., P. Thunis, M. Beekmann, J.-P. Putaud and A. de Meij, 2021: Impact of SOx, NOx and NH3 emission reductions on PM2.5 concentrations across Europe: Hints for future measure development, Environment International, 156, 106699.
  • Thunis, P., A. Clappier, M. Beekmann, J.-P. Putaud, C. Cuvelier, J. Madrazo, and A. de Meij,  2021: Non-linear response of PM2.5 to changes in NOx and NH3 emissions in the Po basin (Italy): consequences for air quality plans, Atmos. Chem. Phys., 21, 9309–9327.
  • Reiminger, N., Jurado, X., Vazquez, J., Wemmert, C., Blond, N., Dufresne, M., Wertel, J., 2020c. Effects of wind speed and atmospheric stability on the air pollution reduction rate induced by noise barriers. Journal of Wind Engineering and Industrial Aerodynamics 200, 104160. https://doi.org/10.1016/j.jweia.2020.104160
  • Reiminger, N., Jurado, X., Vazquez, J., Wemmert, C., Dufresne, M., Blond, N., Wertel, J., 2020b. Methodologies to assess mean annual air pollution concentration combining numerical results and wind roses, Sustainable Cities and Society, Volume 59, 2020, 102221, ISSN 2210-6707, https://doi.org/10.1016/j.scs.2020.102221  
  • Reiminger, N., Vazquez, J., Blond, N., Dufresne, M., Wertel, J., 2020a. CFD evaluation of mean pollutant concentration variations in step-down street canyons. Journal of Wind Engineering and Industrial Aerodynamics 196, 104032. https://doi.org/10.1016/j.jweia.2019.104032  
  • Jurado, X., Reiminger, N., Vazquez, J., Wemmert, C., Dufresne, M., Blond, N., Wertel, J., 2020. Assessment of mean annual NO2 concentration based on a partial dataset. Atmospheric Environment 221, 117087. https://doi.org/10.1016/j.atmosenv.2019.117087  
  • Pisoni, E., P. Thunis and A. Clappier, 2019: Application of the SHERPA source-receptor relationships, based on the EMEP MSC-W model, for the assessment of air quality policy scenarios, Atmos. Environ., 4, 100047.
  • Thunis, P., A. Clappier, L. Tarrason, C. Cuvelier, A. Monteiro, E. Pisoni, J. Wesseling, C.A. Belis, G. Pirovano, S. Janssen, C. Guerreiro and E. Peduzzi, 2019: Source apportionment to support air quality planning: Strengths and weaknesses of existing approaches, Environment International, 130, 104825.
  • Peduzzi, E., E. Pisoni, A. Clappier and P. Thunis 2018: Multi-level policies for air quality: implications of national and sub-national emission reductions on population exposure, Air Quality, Atmosphere and Health, 11, 1121–1135.
  • Thunis, P., B. Degraeuwe, E. Pisoni, M. Trombetti, E. Peduzzi, C.A. Belis, J. Wilson, A. Clappier and E. Vignati, 2018: PM2.5 source allocation in European cities: A SHERPA modelling study, Atmos. Environ., 187, 93-106.
  • Degraeuwe, B., P. Thunis, A. Clappier, M. Weiss, W. Lefebvre, S. Janssen and S. Vranckx, 2017: Impact of passenger car NOx emissions on urban NO2 pollution – Scenario analysis for 8 European cities, Atmos. Environ., 171, 330-337.
  • Carnevale, C, G. Finzi, A. Pederzoli, E. Turrini, M. Volta, G. Guariso, R. Gianfreda, G. Maffeis, E. Pisoni, P. Thunis, L. Markl-Hummel, N. Blond, A. Clappier, V. Dujardin, C. Weber and G. Perron, 2014: Exploring trade-offs between air pollutants through an Integrated Assessment Model, Science of the Total. Environ., 481, 7-16.


  • Nicolas Reiminger, Modélisation 3D de la pollution atmosphérique à l’échelle urbaine. Directeur de thèse : J. Vasquez. Financement : ANRT/AIR&D. Actuellement : ingénieur AIR&D. http://www.theses.fr/s186227
  • Madrazo, J., 2018: Alternative Methods for Assessing Air Quality and Energy Strategies for Developing Countries: A Case Study on Cuba, Thesis from EPFL n° 9010.  PhD directors: Prof. F. Golay  & Prof. A. Clappier. https://infoscience.epfl.ch/record/261332?ln=fr


Galerie d'images


Dr. Nadège BLOND, Atmospheric physicist and chemist

Centre National de la Recherche Scientifique (CNRS)


 0033 (0)3 68 85 09 71

Pr. Alain CLAPPIER, Atmospheric physicist and chemist

Université de Strasbourg


 0033 (0)3 68 85 09 48