RT Journal Article
T1 Ultrafine particle formation in the inland sea breeze airflow in Southwest Europe
A1 Fernández Camacho, Rocío
A1 Rodríguez Sánchez, Sara
A1 Rosa Díaz, Jesús de la
A1 Sánchez de la Campa Verdona, Ana María
A1 Viana, M.
A1 Alastuey Urós, José Andrés
A1 Querol, X.
K1 Mediom ambiente -- Calidad
K1 Aire -- Contaminación -- Huelva
AB 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 O-3 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 Southwest Europe
PB Copernicus Publications
SN 1680-7316
YR 2010
FD 2010
LK http://hdl.handle.net/10272/4571
UL http://hdl.handle.net/10272/4571
LA eng
NO Fernández Camacho, R., Rodríguez Sánchez, S., Rosa Díz, J.D., Sánchez de la Campa Verdona, A.M., Viana, M., Alastuey, A., Querol, X.: "Ultrafine particle formation in the inland sea breeze airflow in Southwest Europe". Atmospheric chemistry and physics, v. 10, n. 19, 2010. Págs. 9615-9630. ISSN 1680-7316
DS Repositorio Institucional de la Universidad de Huelva
RD 30 may 2026