Journal cover Journal topic
Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 5.668 IF 5.668
  • IF 5-year value: 6.201 IF 5-year
    6.201
  • CiteScore value: 6.13 CiteScore
    6.13
  • SNIP value: 1.633 SNIP 1.633
  • IPP value: 5.91 IPP 5.91
  • SJR value: 2.938 SJR 2.938
  • Scimago H <br class='hide-on-tablet hide-on-mobile'>index value: 174 Scimago H
    index 174
  • h5-index value: 87 h5-index 87
Volume 10, issue 19
Atmos. Chem. Phys., 10, 9615–9630, 2010
https://doi.org/10.5194/acp-10-9615-2010
© Author(s) 2010. This work is distributed under
the Creative Commons Attribution 3.0 License.
Atmos. Chem. Phys., 10, 9615–9630, 2010
https://doi.org/10.5194/acp-10-9615-2010
© Author(s) 2010. This work is distributed under
the Creative Commons Attribution 3.0 License.

  11 Oct 2010

11 Oct 2010

Ultrafine particle formation in the inland sea breeze airflow in Southwest Europe

R. Fernández-Camacho1, S. Rodríguez1,3, J. de la Rosa1, A. M. Sánchez de la Campa1,2, M. Viana4, A. Alastuey4, and X. Querol4 R. Fernández-Camacho et al.
  • 1University of Huelva, Joint Research Unit to CSIC "Atmospheric Pollution", Campus El Carmen, E21071 Huelva, Spain
  • 2Estación Experimental del Zaidín, CSIC, C/Profesor Albareda 1, E18008 Granada, Spain
  • 3Izaña Atmospheric Research Centre, AEMET Joint Research Unit to CSIC "Studies on Atmospheric Pollution", La Marina 20, planta 6, Santa Cruz de Tenerife, E38071, Canary Islands, Spain
  • 4Institute of Environmental Assessment and Water Research (IDǼA), CSIC, Jordi Girona, 18–26, 08034, Barcelona, Spain

Abstract. Studies on ultrafine particles (diameter < 100nm) and air quality have mostly focused on vehicle exhaust emissions and on new particle formation in "clean" ambient air. Here we present a study focused on the processes contributing to ultrafine particle concentrations in a city (Huelva, SW Spain) placed close to a coastal area where significant anthropogenic emissions of aerosol precursors occur. The overall data analysis shows that two processes predominantly contribute to the number of particles coarser than 2.5 nm: vehicle exhaust emissions and new particle formation due to photo-chemical activity. As typically occurs in urban areas, vehicle exhaust emissions result in high concentrations of black carbon (BC) and particles coarser than 2.5 nm (N) during the morning rush hours. The highest N concentrations were recorded during the 11:00–17:00 h period, under the sea breeze regime, when low BC concentrations were registered and photochemical activity resulted in high O3 levels and in new particle formation in the aerosol precursors' rich inland airflow. In this period, it is estimated that about 80% of the number of particles are linked to sulfur dioxide emissions. The contributions to N of "carbonaceous material and those compounds nucleating/condensing immediately after emission" and of the "new particle formation processes in air masses rich gaseous precursors (e.g. SO2)" were estimated by means of a relatively novel method based on simultaneous measurements of BC and N. A comparison with two recent studies suggests that the daily cycles of "new particle formation" during the inland sea breeze is blowing period seem to be a feature of ultrafine particles in coastal areas of South-west Europe.

Publications Copernicus
Download
Citation