Gallagher, M. W. and Clayborough, R. and Beswick, K. M. and Hewitt, CN and Owen, S. M. and Moncrieff, J. and Pilegaard, K. (2000) Assessment of a relaxed eddy accumulation for measurements of fluxes of biogenic volatile organic compounds: study over arable crops and a mature beech forest. Atmospheric Environment, 34 (18). pp. 2887-2899. ISSN 1352-2310Full text not available from this repository.
A relaxed eddy accumulation (REA) system, based on the design by Beverland et al. (Journal of Geophysics Research 101 (D17) 22, 807-22, 815), for the measurement of biogenic VOC species was evaluated by intercomparison with an eddy correlation CO2 flux system over a mature deciduous beech canopy (Fagus Sylvatica) during the FOREXNOX program. Measurements from a site where winter wheat and barley (Hordeum Vulgare and Triticum Aestivum) were being harvested are also presented. The system was inter-compared with two different eddy correlation systems for measuring CO2 fluxes. Good results were obtained with correlation coefficients for the REA system ranging from 0.71 to 0.82, lending further confidence in the use of this technique. Daily averaged biogenic emissions from the wheat and barley canopies were significantly larger than expected, likely a result of harvesting. Fluxes measured over the beech canopy were also larger than might be expected from northern latitude deciduous forests.
|Journal or Publication Title:||Atmospheric Environment|
|Uncontrolled Keywords:||Volatile organic hydrocarbons ; Relaxed eddy accumulation ; Gas flux measurements ; Carbon dioxide|
|Subjects:||G Geography. Anthropology. Recreation > GE Environmental Sciences|
|Departments:||Faculty of Science and Technology > Lancaster Environment Centre|
|Deposited On:||22 Jan 2009 15:55|
|Last Modified:||26 Jul 2012 15:49|
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