Articles | Volume 13, issue 17
Atmos. Chem. Phys., 13, 8991–9019, 2013

Special issue: SAPUSS: Solving aerosol problems by using synergistic strategies...

Atmos. Chem. Phys., 13, 8991–9019, 2013
Research article
09 Sep 2013
Research article | 09 Sep 2013

Presenting SAPUSS: Solving Aerosol Problem by Using Synergistic Strategies in Barcelona, Spain

M. Dall'Osto1,2,3,*, X. Querol1, A. Alastuey1, M. C. Minguillon1, M. Alier1, F. Amato1, M. Brines1, M. Cusack1, J. O. Grimalt1, A. Karanasiou1, T. Moreno1, M. Pandolfi1, J. Pey1, C. Reche1, A. Ripoll1, R. Tauler1, B. L. Van Drooge1, M. Viana1, R. M. Harrison2,16, J. Gietl2, D. Beddows2, W. Bloss2, C. O'Dowd3, D. Ceburnis3, G. Martucci3, N. L. Ng4, D. Worsnop4, J. Wenger5, E. Mc Gillicuddy5, J. Sodeau5, R. Healy5, F. Lucarelli6, S. Nava6, J. L. Jimenez7, F. Gomez Moreno8, B. Artinano8, A. S. H. Prévôt9, L. Pfaffenberger9, S. Frey10, F. Wilsenack11, D. Casabona12, P. Jiménez-Guerrero13, D. Gross14, and N. Cots15 M. Dall'Osto et al.
  • 1IDAEA-CSIC, C/Jordi Girona 18–22, 08034 Barcelona, Spain
  • 2National Centre for Atmospheric Science, Division of Environmental Health & Risk Management, University of Birmingham, Birmingham, UK
  • 3School of Physics, Centre for Climate & Air Pollution Studies, National University of Ireland Galway, University Road, Galway, Ireland
  • 4Center for Aerosol and Cloud Chemistry, Aerodyne Research, Inc., Billerica, MA, USA
  • 5Department of Chemistry and Environmental Research Institute, University College Cork, Ireland
  • 6National Institute of Nuclear Physics (INFN) and Department of Physics and Astronomy, University of Florence, Sesto Fiorentino, Italy
  • 7Dept. of Chemistry and Biochemistry, University of Colorado, Boulder, CO, USA
  • 8CIEMAT, Environment Department, Av. Complutense 40, 28040 Madrid, Spain
  • 9Paul Scherrer Institute, Laboratory of Atmospheric Chemistry, 5232 Villigen PSI, Switzerland
  • 10Jenoptik, Defense & Civil Systems, Sensor Systems Business Unit, Teltow, Germany
  • 11Wehrwissenschaftliches Institut für Schutztechnologien, Munster, Germany
  • 12Area de Medi Ambient, Diputació de Barcelona, Barcelona, Spain
  • 13Física de la Tierra, Universidad de Murcia, Murcia, Spain
  • 14Department of Chemistry, Carleton College, MN, USA
  • 15Gencat, Direcció General de Qualitat Ambiental Av. Diagonal 523–525, 08029 Barcelona, Spain
  • 16Department of Environmental Sciences/Center of Excellence in Environmental Studies, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
  • *now at: Institut de Ciències del Mar, ICM-CSIC, Pg Marítim de la Barceloneta 37–49, 08003 Barcelona, Spain

Abstract. This paper presents the summary of the key objectives, instrumentation and logistic details, goals, and initial scientific findings of the European Marie Curie Action SAPUSS project carried out in the western Mediterranean Basin (WMB) during September–October in autumn 2010. The key SAPUSS objective is to deduce aerosol source characteristics and to understand the atmospheric processes responsible for their generations and transformations – both horizontally and vertically in the Mediterranean urban environment. In order to achieve so, the unique approach of SAPUSS is the concurrent measurements of aerosols with multiple techniques occurring simultaneously in six monitoring sites around the city of Barcelona (NE Spain): a main road traffic site, two urban background sites, a regional background site and two urban tower sites (150 m and 545 m above sea level, 150 m and 80 m above ground, respectively). SAPUSS allows us to advance our knowledge sensibly of the atmospheric chemistry and physics of the urban Mediterranean environment. This is well achieved only because of both the three dimensional spatial scale and the high sampling time resolution used. During SAPUSS different meteorological regimes were encountered, including warm Saharan, cold Atlantic, wet European and stagnant regional ones. The different meteorology of such regimes is herein described. Additionally, we report the trends of the parameters regulated by air quality purposes (both gaseous and aerosol mass concentrations); and we also compare the six monitoring sites. High levels of traffic-related gaseous pollutants were measured at the urban ground level monitoring sites, whereas layers of tropospheric ozone were recorded at tower levels. Particularly, tower level night-time average ozone concentrations (80 ± 25 μg m−3) were up to double compared to ground level ones. The examination of the vertical profiles clearly shows the predominant influence of NOx on ozone concentrations, and a source of ozone aloft. Analysis of the particulate matter (PM) mass concentrations shows an enhancement of coarse particles (PM2.5–10) at the urban ground level (+64%, average 11.7 μg m−3) but of fine ones (PM1) at urban tower level (+28%, average 14.4 μg m−3). These results show complex dynamics of the size-resolved PM mass at both horizontal and vertical levels of the study area. Preliminary modelling findings reveal an underestimation of the fine accumulation aerosols. In summary, this paper lays the foundation of SAPUSS, an integrated study of relevance to many other similar urban Mediterranean coastal environment sites.

Final-revised paper