BAFU Ozone PM Trends
Contact: Sebnem Aksoyoglu, firstname.lastname@example.org
PM Trends and Variability
Contact: André Prévôt, email@example.com
Scope of project
- The average adjusted yearly PM10 trends from 1991-1998 (total 13 stations in Switzerland) for rural, urban background and urban street stations were − 0.37, − 0.53 and − 1.2 µg m−3yr−1 respectively. The adjusted yearly trends for all stations range from − 0.15 µg m−3yr−1 to − 1.2 µg m−3yr−1 or − 1.2%yr −1 to −3.3% yr−1 (Barmpadimos et al., 2011a).
- Most important meteorological influences on PM10 were found to be wind gust, temperature, precipitation and boundary layer depth (Barmpadimos et al., 2011a).
- Ambient concentrations of PMcoarse (PM10-PM2.5) at 7 Swiss stations are higher on weekdays than on Sundays by a factor of 1.53 on average over all urban and suburban sites and by a factor of 1.32 on average over all rural sites (Barmpadimos et al., 2011b)
- The weekend effect is stronger PMcoarse than form PM2.5: The relative increase of coarse mode ambient concentrations on weekdays compared to Sundays was larger than the relative increase of PM2.5 concentrations by a factor of 2.7 on average over all urban and suburban sites, whereas no considerable difference was found at the rural sites (Barmpadimos et al., 2011b).
- The contribution of traffic to coarse mode urban ambient concentrations was estimated to be 53% (34%-78%)on Sundays and 70% (57%-86%) on weekdays (Barmpadimos et al., 2011b).
Journal ArticlesInfluence of meteorology on PM10 trends and variability in Switzerland from 1991 to 2008.
Barmpadimos, I., C. Hueglin, J. Keller, S. Henne, and A. S. H. Prevot, 2011a
Atmospheric Chemistry and Physics, 11, 1813-1835.
The weekly cycle of ambient concentrations and traffic emissions of coarse (PM(10)-PM(2.5)) atmospheric particles.
Barmpadimos, I., M. Nufer, D. C. Oderbolz, J. Keller, S. Aksoyoglu, C. Hueglin, U. Baltensperger, and A. S. H. Prevot, 2011b
Atmospheric Environment, 45, 4580-4590.
ThesisTrends and variability of airborne particulate matter in Switzerland and in Europe
Barmpadimos, Iakovos, November 2011