Results 11 to 20 of about 1,860,518 (333)
First eddy covariance flux measurements by PTR-TOF [PDF]
Atmospheric Measurement Techniques, 2010 The recently developed PTR-TOF instrument was evaluated to measure methanol fluxes emitted from grass land using the eddy covariance method. The high time resolution of the PTR-TOF allowed storing full mass spectra up to <i>m/z</i> 315 with a
M. Müller +10 more
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Lag time determination in DEC measurements with PTR-MS [PDF]
Atmospheric Measurement Techniques, 2010 The disjunct eddy covariance (DEC) method has emerged as a popular technique for micrometeorological flux measurements of volatile organic compounds (VOCs).
R. Taipale, T. M. Ruuskanen, J. Rinne
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PTR-TOF-MS eddy covariance measurements of isoprene and monoterpene fluxes from an eastern Amazonian rainforest [PDF]
Atmospheric Chemistry and Physics, 2020 . Biogenic volatile organic compounds (BVOCs) are important components of the atmosphere due to their contribution to atmospheric chemistry and biogeochemical cycles. Tropical forests are the largest source of the dominant BVOC emissions (e.g.
Chinmoy Sarkar +10 more
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Ergodicity test of the eddy-covariance technique [PDF]
Atmospheric Chemistry and Physics, 2015 The ergodic hypothesis is a basic hypothesis typically invoked in atmospheric surface layer (ASL) experiments. The ergodic theorem of stationary random processes is introduced to analyse and verify the ergodicity of atmospheric turbulence measured using ...
J. Chen, Y. Hu, Y. Yu, S. Lü
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ICOS eddy covariance flux-station site setup: a review
International Agrophysics, 2018 The Integrated Carbon Observation System Research Infrastructure aims to provide long-term, continuous observations of sources and sinks of greenhouse gases such as carbon dioxide, methane, nitrous oxide, and water vapour. At ICOS ecosystem stations, the
C. Rebmann +39 more
semanticscholar +15 more sources
Eddy covariance for quantifying trace gas fluxes from soils [PDF]
SOIL, 2015 Soils are highly complex physical and biological systems, and hence measuring soil gas exchange fluxes with high accuracy and adequate spatial representativity remains a challenge. A technique which has become increasingly popular is the eddy covariance (
W. Eugster, L. Merbold
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, 2012 In the 1970s, scientists met with difficulties in estimating fluxes over tall vegetation, like forests, using flux-gradient relationship (Raupach 1979). The roughness of the exchanging surface drive to efficient turbulent mixing reducing the concentration gradient and invalidating Monin-Obukhov similarity theory (Lenschow 1995).
Longdoz, Bernard, Granier, André
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Methane emissions from an oil sands tailings pond: a quantitative comparison of fluxes derived by different methods [PDF]
Atmospheric Measurement Techniques, 2021 Tailings ponds in the Alberta oil sands region are significant sources of fugitive emissions of methane to the atmosphere, but detailed knowledge on spatial and temporal variabilities is lacking due to limitations of the methods deployed under current ...
Y. You +5 more
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AGU Advances, 2023 Wetlands are responsible for 20%–31% of global methane (CH4) emissions and account for a large source of uncertainty in the global CH4 budget. Data‐driven upscaling of CH4 fluxes from eddy covariance measurements can provide new and independent bottom‐up
G. McNicol +58 more
semanticscholar +1 more source