TY - JOUR
T1 - Assessment of a relaxed eddy accumulation for measurements of fluxes of biogenic volatile organic compounds
T2 - Study over arable crops and a mature beech forest
AU - Gallagher, M. W.
AU - Clayborough, R.
AU - Beswick, K. M.
AU - Hewitt, C. N.
AU - Owen, S.
AU - Moncrieff, J.
AU - Pilegaard, K.
PY - 2000/1/1
Y1 - 2000/1/1
N2 - 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. Copyright (C) 2000 Elsevier Science Ltd.
AB - 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. Copyright (C) 2000 Elsevier Science Ltd.
KW - Carbon dioxide
KW - Gas flux measurements
KW - Relaxed eddy accumulation
KW - Volatile organic hydrocarbons
UR - https://www.scopus.com/pages/publications/0034064662
U2 - 10.1016/S1352-2310(00)00066-2
DO - 10.1016/S1352-2310(00)00066-2
M3 - Article
AN - SCOPUS:0034064662
SN - 1352-2310
VL - 34
SP - 2887
EP - 2899
JO - Atmospheric Environment
JF - Atmospheric Environment
IS - 18
ER -
