Implications of ammonia emissions for fine aerosol formation and visibility impairment. A case study from the Lower Fraser Valley, British Columbia

R.J. Barthelmie, S.C. Pryor

    Research output: Contribution to journalJournal articleResearch

    Abstract

    Ammonia enhances atmospheric aerosol formation and, once in the aerosol form, enhances the light extinction characteristics of those aerosols. In this paper, an ammonia emissions inventory is developed for the Lower Fraser Valley (LFV) of British Columbia and used in conjunction with ambient ammonia and ammonium measurements to explain: (i) the observed temporal and spatial variability of fine inorganic aerosol composition and concentrations in the valley, and (ii) the severity and spatial variability of visibility degradation in the LFV. It is proposed here that advection of urban emissions of nitrogen and sulphur oxides over agricultural areas in the eastern and central valley with higher ammonia emissions favours subsequent ammonium nitrate and sulphate formation. This leads to higher fine mass concentrations and lowest visibility in the predominantly agricultural regions of the valley. (C) 1998 Elsevier Science Ltd. All rights reserved.
    Original languageEnglish
    JournalAtmospheric Environment
    Volume32
    Issue number3
    Pages (from-to)345-352
    ISSN1352-2310
    DOIs
    Publication statusPublished - 1998

    Fingerprint Dive into the research topics of 'Implications of ammonia emissions for fine aerosol formation and visibility impairment. A case study from the Lower Fraser Valley, British Columbia'. Together they form a unique fingerprint.

    Cite this