Author/Authors :
Erik Swietlicki، نويسنده , , HANS-CHRISTEN HANSSON، نويسنده , , Bengt Martinsson، نويسنده , , Besim Mentes، نويسنده , , Douglas Orsini، نويسنده , , BIRGITTA SVENNINGSSON، نويسنده , , By ALFRED WIEDENSOHLER، نويسنده , , MANFRED WENDISCH، نويسنده , , Silke Pahl، نويسنده , , Peter J. Downey and Peter Winkler ، نويسنده , , Roy N. Colvile ، نويسنده , , Rainer Gieray، نويسنده , , Jens Lüttke، نويسنده , , JOST HEINTZENBERG، نويسنده , , J. Neil Cape، نويسنده , , Ken J. Hargreaves، نويسنده , , Robert L. Storeton-West، نويسنده , , Karin Acker، نويسنده , , Wolfgang Wieprecht، نويسنده , , Axel Berner، نويسنده , , et al.، نويسنده ,
Abstract :
A characterisation of the sources influencing the site for the final field campaign of the EUROTRAC subproject GCE (Ground-based Cloud Experiment) at Great Dun Fell, Cumbria, Great Britain in April–May 1993 is presented. The sources were characterised mainly by means of aerosol filter and cascade impactor data, single particle analysis, gas data, data on aromatic organic compounds, cloud water ionic composition, measurements of aerosol size distributions and hygroscopic properties and various meteorological information. Receptor models applied on the aerosol filter and impactor data sets separately revealed two major source types being a marine sea spray source and a long-range transported anthropogenic pollution source. The results of the receptor models were largely consistent with the other observations used in the source identification. Periods of considerable anthropogenic pollution as well as almost pure marine air masses were clearly identified during the course of the experiment.
