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    Source Footprint Considerations in the Determination of Volatile Organic Compound Fluxes from Forest Canopies

    Source: Journal of Applied Meteorology:;1999:;volume( 038 ):;issue: 007::page 878
    Author:
    Kaharabata, S. K.
    ,
    Schuepp, P. H.
    ,
    Fuentes, J. D.
    DOI: 10.1175/1520-0450(1999)038<0878:SFCITD>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: Above-canopy sampling of trace gases to determine volatile organic compound (VOC) emissions should be interpreted in terms of footprint considerations. This can be accomplished by defining the upwind canopy areas effectively sampled under the given wind and stability conditions. Using solutions of the advection?diffusion equation adjusted through controlled tracer gas (SF6) release experiments in the Boreal Ecosystem Atmosphere Study of 1994, sampling of VOC concentrations and fluxes over a forest whose VOC sources are heterogeneous (Camp Borden) are studied. Analysis demonstrates that the variability observed in measured VOC fluxes could be accounted for by varying numbers of randomly distributed clumps of emitter species within a varying footprint. It suggests that heterogeneity of the forest canopy, in terms of source distribution of VOCs, has to be explicitly considered in estimates of source strength from above-canopy concentration/flux sampling.
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      Source Footprint Considerations in the Determination of Volatile Organic Compound Fluxes from Forest Canopies

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4148107
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    contributor authorKaharabata, S. K.
    contributor authorSchuepp, P. H.
    contributor authorFuentes, J. D.
    date accessioned2017-06-09T14:07:02Z
    date available2017-06-09T14:07:02Z
    date copyright1999/07/01
    date issued1999
    identifier issn0894-8763
    identifier otherams-12735.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4148107
    description abstractAbove-canopy sampling of trace gases to determine volatile organic compound (VOC) emissions should be interpreted in terms of footprint considerations. This can be accomplished by defining the upwind canopy areas effectively sampled under the given wind and stability conditions. Using solutions of the advection?diffusion equation adjusted through controlled tracer gas (SF6) release experiments in the Boreal Ecosystem Atmosphere Study of 1994, sampling of VOC concentrations and fluxes over a forest whose VOC sources are heterogeneous (Camp Borden) are studied. Analysis demonstrates that the variability observed in measured VOC fluxes could be accounted for by varying numbers of randomly distributed clumps of emitter species within a varying footprint. It suggests that heterogeneity of the forest canopy, in terms of source distribution of VOCs, has to be explicitly considered in estimates of source strength from above-canopy concentration/flux sampling.
    publisherAmerican Meteorological Society
    titleSource Footprint Considerations in the Determination of Volatile Organic Compound Fluxes from Forest Canopies
    typeJournal Paper
    journal volume38
    journal issue7
    journal titleJournal of Applied Meteorology
    identifier doi10.1175/1520-0450(1999)038<0878:SFCITD>2.0.CO;2
    journal fristpage878
    journal lastpage884
    treeJournal of Applied Meteorology:;1999:;volume( 038 ):;issue: 007
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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