Martijn Schaap

Martijn Schaap

Principal Scientist at TNO and Professor at Freie Universitaet Berlin on Air Quality
Martijn Schaap

Major environmental challenges of the 21st century relate to the composition of our atmosphere. Exposure to pollutants such as particulate matter is associated with significant health impacts. Greenhouse gas emissions cause climate change and the deposition of reactive nitrogen causes a loss of biodiversity in ecosystems through eutrophication.

Professorship chair

Atmospheric Chemistry, Aerosols (Freie Universitaet Berlin).

Research area

The fate and impact of many pollutants are intertwined through processes in the atmosphere. The complex interactions call for an integrated approach to develop cost effective mitigation strategies.

As mitigation strategies are becoming increasingly expensive, the demand for high quality information on exposure and deposition, the origin of the pollution and the effectiveness of potential measures become more and more important. We develop the LOTOS-EUROS chemistry transport model for air quality applications by working on dynamic emission modelling, improving process descriptions and including new functionalities with respect to source apportionment and emission inversion using satellite data.

Top publications

  • Schaap, M., Apituley, A., Timmermans, R. M. A., Koelemeijer, R. B. A., and de Leeuw, G.: Exploring the relation between aerosol optical depth and PM2.5 at Cabauw, the Netherlands, Atmos. Chem. Phys., 9, 909–925,, 2009
  • Manders, P. Builtjes, L. Curier, L., ..., and M. Schaap, M., “Curriculum vitae of the LOTOS–EUROS (v2.0) chemistry transport model”, Geosci. Model Dev., 10, 4145–4173,, 2017.
  • Daellenbach, K. R., Uzu, G., Jiang, J., Cassagnes, L. E., Leni, Z., Vlachou, A., Schaap, M., … Prévôt, A. S. H. (2020). Sources of particulate-matter air pollution and its oxidative potential in Europe, Nature, 587 (7834), 414–419.


Princetonlaan 6
NL-3584 CB Utrecht

Postal address

P.O. Box 80015
NL-3508 TA Utrecht