Scope of project
This PhD project aims to analyze the trends of ozone and particulate matter (PM) in Europe to better understand the main processes leading to observed trends (i.e. changes in anthropogenic emissions, solar radiation, meteorological variability, background ozone).
Field campaigns
Key findings
- The 3% decrease in solar surface radiation (SSR) between 1990 and 2010 led to a relatively small increase on mean surface ozone (about 1.5%) mainly by affecting the photolysis rates.
- The results obtained in this study suggested that traffic-NOx emissions in Eurepean emission inventories might be too low.
Funding
BAFU
Publications
Journal Articles
Oikonomakis, E., Aksoyoglu, S., Ciarelli, G., Baltensperger, U., and Prévôt, A. S. H.: Low modeled ozone production suggests underestimation of precursor emissions (especially NOx) in Europe, Atmos. Chem. Phys., 18, 2175-2198, 10.5194/acp-18-2175-2018, 2018.Oikonomakis, E., Aksoyoglu, S., Wild, M., Ciarelli, G., Baltensperger, U., and Prévôt, A. S. H.: Solar “brightening” impact on summer surface ozone between 1990 and 2010 in Europe – a model sensitivity study of the influence of the aerosol–radiation interactions, Atmos. Chem. Phys., 18, 9741-9765, 10.5194/acp-18-9741-2018, 2018.
Thesis
ETH-25011, 2018Conference Contributions
Oikonomakis, E., Aksoyoglu, S., Baltensperger, U., and Prévôt, A. S. H.: The Impact of "Brightening" on Surface O3 Concentrations over Europe Between 1990 and 2010, in: Air Pollution Modeling and its Application XXV. ITM 2016, edited by: Mensink, C., and Kallos, G., Springer Proceedings in Complexity. Springer, Cham, 31-36, 2018.Emmanouil Oikonomakis, Sebnem Aksoyoglu, Giancarlo Ciarelli, Urs Baltensperger & André S.H. Prévôt: Searching for reasons of low ozone production by CAMx in Europe ITM 2018, May 14-18, 2018, Ottawa