Influence of transport over a mountain ridge on the chemical composition of marine aerosols during the ACE-2 Hillcloud Experiment

Andrew Allen, BM Davison, Jonathan James, L Robertson, Roy Harrison, CN Hewitt

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    5 Citations (Scopus)

    Abstract

    Aerosol chemical composition and trace gas measurements were made at two locations on the northeastern peninsula of Tenerife during the ACE-2 HILLCLOUD experiment, between 28 June and 23 July 1997. Measurements were made of coarse (>2.5 mum aerodynamic diameter) and fine (10.0 mum (NSSS and NH4+), and 0.3, 1.5 and 4.0 mum (MSA). No significant production of other aerosol species was observed, with the exception of ammonium, which was formed at variable rates dependent on neutralisation of the aerosol with ammonia released from spatially non-uniform surface sources. Seasalt components were mainly present in coarse particles, although sub-micrometre chloride was also measured. Losses by deposition exceeded calculated expectations for all species, and were highest for the seasalt fraction and nitrate.
    Original languageEnglish
    Pages (from-to)83-107
    Number of pages25
    JournalJournal of Atmospheric Chemistry
    Volume41
    DOIs
    Publication statusPublished - 1 Jan 2002

    Keywords

    • sulphate
    • dimethylsulphide
    • marine aerosols
    • deposition
    • ACE-2
    • methanesulphonate

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