Long-range transport of polluted air masses can significantly affects surface PM10 levels. PM10 daily-average ponderal values are inadequate to investigate the occurrence of such phenomena and consequently do not give significant information for source apportionment. In this work the analysis of aerosol size spectra and the study of the correlation of the fine and coarse modes of PM have been applied to individuate long-range transport episodes of polluted air masses. Dust-models and backward-trajectory analysis were supportive to local surface measurements of size distribution of PM in confirming the origins of remote sources of pollution. An application is discussed involving long range transport over Italy of desert dust, comparatively examined with a fine-PM pollution episode due to local sources.
Aerosol Size Spectrum Analysis as Support to Differentiate Long-Range Mass Transport and Acute Local Pollution Episodes of Particulate Matter
Pasquale Avino
2008-01-01
Abstract
Long-range transport of polluted air masses can significantly affects surface PM10 levels. PM10 daily-average ponderal values are inadequate to investigate the occurrence of such phenomena and consequently do not give significant information for source apportionment. In this work the analysis of aerosol size spectra and the study of the correlation of the fine and coarse modes of PM have been applied to individuate long-range transport episodes of polluted air masses. Dust-models and backward-trajectory analysis were supportive to local surface measurements of size distribution of PM in confirming the origins of remote sources of pollution. An application is discussed involving long range transport over Italy of desert dust, comparatively examined with a fine-PM pollution episode due to local sources.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
