Meteorological pre-processing of incoming solar radiation and heat flux over a sparse boreal forest at a northern site during winter conditions

Sven-Erik Gryning, E. Batchvarova

    Research output: Contribution to journalConference articleResearchpeer-review

    Abstract

    Measurements from Northern Finland on radiation and turbulent fluxes over a sparse boreal forest with snow-covered ground were analysed. The measurements represent harsh winter conditions characterized by low sun angles. The absorption of incoming solar radiation in clear skies (turbidity) was found to be a strong function of the solar elevation. At low solar elevation angles, commonly used expressions for turbidity did not fit the measurements well. A simple energy balance type met-processor performed well during daytime, but it was not satisfactory during night time. Simplifications and possible improvements in the energy balance model are discussed.
    Original languageEnglish
    JournalInternational Journal of Environment and Pollution
    Volume16
    Issue number1-6
    Pages (from-to)550-559
    ISSN0957-4352
    Publication statusPublished - 2001
    Event6th International Conference on Harmonization within Atmospherica Dispersion Modelling for Regulatory Purposes - Rouen, France
    Duration: 11 Oct 199914 Oct 1999
    Conference number: 6

    Conference

    Conference6th International Conference on Harmonization within Atmospherica Dispersion Modelling for Regulatory Purposes
    Number6
    CountryFrance
    CityRouen
    Period11/10/199914/10/1999

    Keywords

    • Meteorological processor
    • Sensible and latent heat fluxes
    • Solar radiation
    • Winter conditions

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