Results 41 to 50 of about 1,860,518 (333)
Frontiers in Marine Science, 2018 The capture of carbon by aquatic ecosystems and its sequestration in sediments has been studied as a potential method for mitigating the adverse effects of climate change.
Tatsuki Tokoro, Tomohiro Kuwae
doaj +1 more source
Comparative CO2 flux measurements by eddy covariance technique using open- and closed-path gas analysers over the equatorial Pacific Ocean [PDF]
Tellus: Series B, Chemical and Physical Meteorology, 2012 Direct comparison of air–sea CO2 fluxes by open-path eddy covariance (OPEC) and closed-path eddy covariance (CPEC) techniques was carried out over the equatorial Pacific Ocean.
Fumiyoshi Kondo, Osamu Tsukamoto
doaj +1 more source
Eddy covariance measurement of isoprene fluxes [PDF]
Journal of Geophysical Research: Atmospheres, 1998 A system has been developed to directly measure isoprene flux above a forest canopy by eddy covariance using the combination of a fast response, real‐time isoprene sensor and sonic anemometer. This system is suitable for making nearly unattended, long‐term, and continuous measurements of isoprene fluxes. Isoprene detection is based on chemiluminescence
Guenther, Alex B, Hills, Alan J
openaire +3 more sources
Comparative measurements of water vapor fluxes over a tall forest using open- and closed-path eddy covariance system [PDF]
Atmospheric Measurement Techniques, 2015 Eddy covariance using infrared gas analyzes has been a useful tool for gas exchange measurements between soil, vegetation and the atmosphere. So far, comparisons between the open- and closed-path eddy covariance (CP) system have been extensively made on ...
J. B. Wu +3 more
doaj +1 more source
Eddy Covariance Calculation Revisited with Wavelet Cospectra
SOLA, 2008 In this paper, the calculation of eddy covariance flux is reevaluated with newly-emerged capability of the wavelet transform. It is demonstrated that the wavelet transform clearly revealed the cospectral gap that separates turbulent and mesoscale motions with the data collected over a rice and a larch forest.
Makoto Saito, Jun Asanuma
openalex +3 more sources
Advances in upscaling of eddy covariance measurements of carbon and water fluxes [PDF]
, 2012 Eddy covariance flux towers provide continuous measurements of ecosystem-level net exchange of carbon, water, energy, and other trace gases between land surface and the atmosphere.
Chen, Jiquan +3 more
core +3 more sources
Evaluation of a lower-powered analyzer and sampling system for eddy-covariance measurements of nitrous oxide fluxes [PDF]
Atmospheric Measurement Techniques, 2018 Nitrous oxide (N2O) fluxes measured using the eddy-covariance method capture the spatial and temporal heterogeneity of N2O emissions. Most closed-path trace-gas analyzers for eddy-covariance measurements have large-volume, multi-pass absorption cells ...
S. E. Brown +2 more
doaj +1 more source
Advances in Meteorology, 2015 In this paper we present one year of meteorological and flux measurements obtained near Ny-Ålesund, Spitsbergen. Fluxes are derived by the eddy covariance method and by a hydrodynamic model approach (HMA) as well.
Georg Jocher +5 more
doaj +1 more source
MethodsX, 2018 The southern South China coastal oceans within the South East Asian region are much lacking in the perception of the surface energy budget and evaporation over the ocean waters in response to climatic changes.
Yusri Yusup +2 more
doaj +1 more source
Quantifying the impact of emission outbursts and non-stationary flow on eddy-covariance CH4 flux measurements using wavelet techniques [PDF]
Biogeosciences, 2019 Methane flux measurements by the eddy-covariance technique are subject to large uncertainties, particularly linked to the partly highly intermittent nature of methane emissions. Outbursts of high methane emissions, termed event fluxes, hold the potential
M. Göckede +3 more
doaj +1 more source