Results 11 to 20 of about 53,109 (325)

Methane emissions from an oil sands tailings pond: a quantitative comparison of fluxes derived by different methods [PDF]

open access: yesAtmospheric 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
doaj   +1 more source

Low-cost eddy covariance: a case study of evapotranspiration over agroforestry in Germany [PDF]

open access: yesAtmospheric Measurement Techniques, 2019
Heterogeneous land surfaces require multiple measurement units for spatially adequate sampling and representative fluxes. The complexity and cost of traditional eddy covariance (EC) set-ups typically limits the feasible number of sampling units ...
C. Markwitz, L. Siebicke
doaj   +1 more source

Calculating canopy stomatal conductance from eddy covariance measurements, in light of the energy budget closure problem [PDF]

open access: yesBiogeosciences, 2021
Canopy stomatal conductance is commonly estimated from eddy covariance measurements of the latent heat flux (LE) by inverting the Penman–Monteith equation.
R. Wehr, S. R. Saleska
doaj   +1 more source

Flux calculation of short turbulent events – comparison of three methods [PDF]

open access: yesAtmospheric Measurement Techniques, 2017
The eddy covariance method is commonly used to calculate vertical turbulent exchange fluxes between ecosystems and the atmosphere. Besides other assumptions, it requires steady-state flow conditions.
C. Schaller, M. Göckede, T. Foken
doaj   +1 more source

InnFLUX – an open-source code for conventional and disjunct eddy covariance analysis of trace gas measurements: an urban test case [PDF]

open access: yesAtmospheric Measurement Techniques, 2020
We describe and test a new versatile software tool for processing eddy covariance and disjunct eddy covariance flux data. We present an evaluation based on urban non-methane volatile organic compound (NMVOC) measurements using a proton transfer reaction ...
M. Striednig   +4 more
doaj   +1 more source

Estimation of Sensible and Latent Heat Fluxes Using Flux Variance Method under Unstable Conditions: A Case Study of Tea Plants

open access: yesAtmosphere, 2022
Evapotranspiration is essential for precise irrigation and water resource management. Previous literature suggested that eddy covariance (EC) systems could directly measure evapotranspiration in agricultural fields.
Noman Ali Buttar   +10 more
doaj   +1 more source

Technical note: Novel triple O2 sensor aquatic eddy covariance instrument with improved time shift correction reveals central role of microphytobenthos for carbon cycling in coral reef sands [PDF]

open access: yesBiogeosciences, 2021
The aquatic eddy covariance technique stands out as a powerful method for benthic O2 flux measurements in shelf environments because it integrates effects of naturally varying drivers of the flux such as current flow and light.
A. Merikhi, P. Berg, M. Huettel
doaj   +1 more source

Analyzing the Areas Contributing to Evapotranspiration Measured from the Eddy Covariance System in a Winter Wheat Field

open access: yesGuan'gai paishui xuebao, 2021
【Background and objective】 Evapotranspiration from managed and natural ecosystems is an important process in hydrological cycle but not trivial to measure at large scales.
XIE Jing   +3 more
doaj   +1 more source

Predicting evapotranspiration from drone-based thermography – a method comparison in a tropical oil palm plantation [PDF]

open access: yesBiogeosciences, 2021
For the assessment of evapotranspiration, near-surface airborne thermography offers new opportunities for studies with high numbers of spatial replicates and in a fine spatial resolution.
F. Ellsäßer   +8 more
doaj   +1 more source

Globally Scalable Approach to Estimate Net Ecosystem Exchange Based on Remote Sensing, Meteorological Data, and Direct Measurements of Eddy Covariance Sites

open access: yesRemote Sensing, 2022
Despite a rapid development of Nature-Based Solutions (NBS) for carbon removal in recent years, the methods for evaluating NBS still have certain gaps. We propose an approach based on a combination of remote sensing data and meteorological variables to ...
Ruslan Zhuravlev   +4 more
doaj   +1 more source

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