Title: Atmospheric aerosols local–regional discrimination for a semi-urban area in India
Authors: HOODA Rakesh K.HYVARINEN AVESTENIUS MikaGILARDONI StefaniaSHARMA V. P.VIGNATI ElisabettaKULMALA MLIHAVAINEN H
Citation: ATMOSPHERIC RESEARCH vol. 168 p. 13-23
Publisher: ELSEVIER SCIENCE INC
Publication Year: 2016
JRC N°: JRC81443
ISSN: 0169-8095
URI: http://www.sciencedirect.com/science/article/pii/S0169809515002598
http://publications.jrc.ec.europa.eu/repository/handle/JRC81443
DOI: 10.1016/j.atmosres.2015.08.014
Type: Articles in periodicals and books
Abstract: In the European Integrated project on Aerosol Cloud Climate and Air Quality interactions (EUCAARI), measure- ments were carried out with a sequential filter-based aerosol sampler and on-line instruments for aerosol composition and behaviour at Gual Pahari, close to New Delhi. In fine mode (PM2.5), the secondary organic carbon (SOC) to total organic carbon ratio was 46%. This indicated that condensation of SOC on fine size particles could occur rapidly which may be related to the growth of aerosols and the potential to the size of cloud conden- sation nuclei in the region. Source region discrimination was improved significantly through coupling conditional probability functions with receptor modelling, and validation through volume size distribution. The air masses from industrial and dense populated regions show a mix of local as well as regional emissions to fine mode aerosols. The back-trajectory analysis captured the long-range transport of sea-salt aerosols enriched with mineral dust. The surface wind directions identified the influence of local emission activities.
JRC Directorate:Sustainable Resources

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