Methanol and other VOC fluxes from a Danish beech forest during late springtime

Gunnar W. Schade, Sheena J. Solomon, Ebba Dellwik, Kim Pilegaard, Annette Ladstätter-Weissenmayer

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    In-canopy mixing ratio gradients and above-canopy fluxes of several volatile organic compounds (VOCs) were measured using a commercial proton transfer reaction mass spectrometer (PTR-MS) in a European beech (Fagus sylvatica) forest in Denmark. Fluxes of methanol were bidirectional: Emission occurred during both day and night with highest fluxes (0.2 mg C m−2 h−1) during a warm period; deposition occurred dominantly at daytime. Confirming previous branch-level measurements on beech, the forest’s monoterpene emissions (0–0.5 mg C m−2 h−1), and in-canopy mixing ratios showed a diurnal cycle consistent with light-dependent emissions; a result contrasting temperature-only driven emissions of most conifer species. Also emitted was acetone, but only at ambient temperatures exceeding 20°C. Slow deposition dominated at lower temperatures. Our in-canopy gradient measurements contrast with earlier results from tropical and pine forest ecosystems in that they did not show this beech ecosystem to be a strong sink for oxygenated VOCs (OVOCs). Instead, their gradients were flat and only small deposition velocities (
    Original languageEnglish
    JournalBiogeochemistry
    Volume106
    Issue number3
    Pages (from-to)337-355
    ISSN0168-2563
    DOIs
    Publication statusPublished - 2011

    Keywords

    • Bio systems
    • Environment and climate

    Cite this

    Schade, Gunnar W. ; Solomon, Sheena J. ; Dellwik, Ebba ; Pilegaard, Kim ; Ladstätter-Weissenmayer, Annette. / Methanol and other VOC fluxes from a Danish beech forest during late springtime. In: Biogeochemistry. 2011 ; Vol. 106, No. 3. pp. 337-355.
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    title = "Methanol and other VOC fluxes from a Danish beech forest during late springtime",
    abstract = "In-canopy mixing ratio gradients and above-canopy fluxes of several volatile organic compounds (VOCs) were measured using a commercial proton transfer reaction mass spectrometer (PTR-MS) in a European beech (Fagus sylvatica) forest in Denmark. Fluxes of methanol were bidirectional: Emission occurred during both day and night with highest fluxes (0.2 mg C m−2 h−1) during a warm period; deposition occurred dominantly at daytime. Confirming previous branch-level measurements on beech, the forest’s monoterpene emissions (0–0.5 mg C m−2 h−1), and in-canopy mixing ratios showed a diurnal cycle consistent with light-dependent emissions; a result contrasting temperature-only driven emissions of most conifer species. Also emitted was acetone, but only at ambient temperatures exceeding 20°C. Slow deposition dominated at lower temperatures. Our in-canopy gradient measurements contrast with earlier results from tropical and pine forest ecosystems in that they did not show this beech ecosystem to be a strong sink for oxygenated VOCs (OVOCs). Instead, their gradients were flat and only small deposition velocities (",
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    author = "Schade, {Gunnar W.} and Solomon, {Sheena J.} and Ebba Dellwik and Kim Pilegaard and Annette Ladst{\"a}tter-Weissenmayer",
    year = "2011",
    doi = "10.1007/s10533-010-9515-5",
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    Methanol and other VOC fluxes from a Danish beech forest during late springtime. / Schade, Gunnar W.; Solomon, Sheena J.; Dellwik, Ebba; Pilegaard, Kim; Ladstätter-Weissenmayer, Annette.

    In: Biogeochemistry, Vol. 106, No. 3, 2011, p. 337-355.

    Research output: Contribution to journalJournal articleResearchpeer-review

    TY - JOUR

    T1 - Methanol and other VOC fluxes from a Danish beech forest during late springtime

    AU - Schade, Gunnar W.

    AU - Solomon, Sheena J.

    AU - Dellwik, Ebba

    AU - Pilegaard, Kim

    AU - Ladstätter-Weissenmayer, Annette

    PY - 2011

    Y1 - 2011

    N2 - In-canopy mixing ratio gradients and above-canopy fluxes of several volatile organic compounds (VOCs) were measured using a commercial proton transfer reaction mass spectrometer (PTR-MS) in a European beech (Fagus sylvatica) forest in Denmark. Fluxes of methanol were bidirectional: Emission occurred during both day and night with highest fluxes (0.2 mg C m−2 h−1) during a warm period; deposition occurred dominantly at daytime. Confirming previous branch-level measurements on beech, the forest’s monoterpene emissions (0–0.5 mg C m−2 h−1), and in-canopy mixing ratios showed a diurnal cycle consistent with light-dependent emissions; a result contrasting temperature-only driven emissions of most conifer species. Also emitted was acetone, but only at ambient temperatures exceeding 20°C. Slow deposition dominated at lower temperatures. Our in-canopy gradient measurements contrast with earlier results from tropical and pine forest ecosystems in that they did not show this beech ecosystem to be a strong sink for oxygenated VOCs (OVOCs). Instead, their gradients were flat and only small deposition velocities (

    AB - In-canopy mixing ratio gradients and above-canopy fluxes of several volatile organic compounds (VOCs) were measured using a commercial proton transfer reaction mass spectrometer (PTR-MS) in a European beech (Fagus sylvatica) forest in Denmark. Fluxes of methanol were bidirectional: Emission occurred during both day and night with highest fluxes (0.2 mg C m−2 h−1) during a warm period; deposition occurred dominantly at daytime. Confirming previous branch-level measurements on beech, the forest’s monoterpene emissions (0–0.5 mg C m−2 h−1), and in-canopy mixing ratios showed a diurnal cycle consistent with light-dependent emissions; a result contrasting temperature-only driven emissions of most conifer species. Also emitted was acetone, but only at ambient temperatures exceeding 20°C. Slow deposition dominated at lower temperatures. Our in-canopy gradient measurements contrast with earlier results from tropical and pine forest ecosystems in that they did not show this beech ecosystem to be a strong sink for oxygenated VOCs (OVOCs). Instead, their gradients were flat and only small deposition velocities (

    KW - Bio systems

    KW - Environment and climate

    KW - Miljø og klima

    KW - Biosystemer

    U2 - 10.1007/s10533-010-9515-5

    DO - 10.1007/s10533-010-9515-5

    M3 - Journal article

    VL - 106

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    EP - 355

    JO - Biogeochemistry

    JF - Biogeochemistry

    SN - 0168-2563

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