Measurements of hydrocarbon air–surface exchange rates over maize
نویسندگان
چکیده
Vertical gradients of volatile organic compounds (VOCs) were measured over a maize (Zea mays) field, in its early growth period, during May 1995, in the Lower Coastal Plains of North Carolina. These measurements were combined with micrometeorological flux measurements to determine emission flux measurements for various VOCs. This measurement program was part of project NOVA (Natural emissions of Oxidant precursors: Validation of techniques and Assessment) to estimate the flux of VOCs. Average emissions of VOCs (and standard error) was estimated to be 49007700mg/m/h out of which emission for methanol averaged (34507420)mg/m/h. A methanol emission rate of 35mg/g/h was calculated for maize from the estimated emission of methanol and biomass density for the site. r 2003 Elsevier Science Ltd. All rights reserved.
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