RT Journal Article
T1 Measurements and simulation of speciated PM2.5 in south-west Europe
A1 Milford, C.
A1 Castell, Nuria
A1 Marrero, C.
A1 Rodríguez González, Sergio
A1 Sánchez de la Campa Verdona, Ana María
A1 Fernández Camacho, Rocío
A1 Rosa Díaz, Jesús de la
A1 Stein, Ariel
AB Chemically speciated concentrations of PM2.5 (sulphate, ammonium, nitrate, elemental and organiccarbon) were simulated in south-west Europe using the three-dimensional air quality model CAMxdriven by the MM5 meteorological model. The inner domain covered the south-west region of Spain witha high spatial (2 km   2 km) and temporal resolution (1 h). The simulation results were evaluated againstexperimental data obtained in four intensive field campaigns performed in 2008 and 2009 at urban andrural sites. PM2.5 measurements of secondary inorganic compounds and carbonaceous aerosol plus asuite of major and trace elements were determined. High time resolution (10 min) measurements ofBlack Carbon (BC) were also conducted. The model captured the variability in the ammonium concentrationsin both summer and winter periods, although it tended to underestimate the magnitude ofconcentrations, while for sulphate the performance was better during the summer periods. Particulateammonium nitrate was only simulated in significant concentrations in the wintertime campaign. Thiswas found to be consistent with the measured composition of PM2.5 where most of nitrate (79e94%) anda significant fraction of sulphate (24e37%) were estimated to be present as non-ammonium salts. Thesenon-ammonium nitrate salts were attributed to the formation of NaNO3. The model PM2.5 primaryelemental carbon simulations, evaluated with hourly resolution, captured the diurnal and seasonalvariability of PM2.5 BC concentrations at the urban site while poorer performance was observed at therural site. A large underestimation was observed for simulated PM2.5 organic carbon concentrationsduring all campaigns. Scenarios of pollution events linked to emissions from south-west Spain, shippingand contributions from more distant emission sources such as Portugal were identified. These resultshighlight how the distinct features of PM2.5 composition in southern Europe regions, such as the largecontribution of non-ammonium salts, need to be taken into account both in model evaluation and infuture implementation of aerosol modelling systems.
PB Elsevier
SN 1352-2310
YR 2013
FD 2013
LK http://hdl.handle.net/10272/9992
UL http://hdl.handle.net/10272/9992
LA eng
NO Milford, C., Castell, N., Marrero, C., Rodríguez González, S., Sánchez de la Campa Verdona, A.M., Fernández Camacho, R., Rosa Díaz, J., Stein, A.:"Measurements and simulation of speciated PM2.5 in south-westEurope". Atmospheric Environment. Vol 77, (2013), págs. 36-50. ISSN  1352-2310
DS Repositorio Institucional de la Universidad de Huelva
RD 30 may 2026