Does increased spatial replication above heterogeneous agroforestry improve the representativeness of eddy covariance measurements? [PDF]
BiogeosciencesSpatial heterogeneity in terrestrial ecosystems compromises the accuracy of eddy covariance measurements. Examples of heterogeneous ecosystems are temperate agroforestry systems, which have been poorly studied by eddy covariance.
J. Á. Callejas-Rodelas +8 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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Journal of GlaciologyBulk aerodynamic methods have been shown to perform poorly in computing turbulent heat fluxes at glacier surfaces during shallow katabatic winds. Katabatic surface layers have different wind shear and flux profiles to the surface layers for which the ...
Cole Lord-May, Valentina Radić
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Modelling Amazonian forest eddy covariance data: a comparison of big leaf versus sun/shade models for the C-14 tower at Manaus I. Canopy photosynthesis [PDF]
Acta Amazonica, 2006 In this study, we concentrate on modelling gross primary productivity using two simple approaches to simulate canopy photosynthesis: "big leaf" and "sun/shade" models.
Lina Mercado +5 more
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High‐Latitude Eddy Covariance Temporal Network Design and Optimization
Journal of Geophysical Research: Biogeosciences, 2023 Abstract Ecosystems at high latitudes are changing rapidly in response to climate change. To understand changes in carbon fluxes across seasonal to multi‐decadal timescales, long‐term in situ measurements from eddy covariance networks are needed. However, there are large spatiotemporal gaps in
Martijn Pallandt +6 more
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Estimating scalar turbulent fluxes with slow-response sensors in the stable atmospheric boundary layer [PDF]
Atmospheric Chemistry and PhysicsConventional and recently developed approaches for estimating turbulent scalar fluxes under stable atmospheric conditions are evaluated, with a focus on gases for which fast sensors are not readily available.
M. Allouche +10 more
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Land, 2021 Forest carbon sequestration is a widely accepted natural climate solution. However, methods to determine net carbon offsets are based on commercial carbon proxies or CO2 eddy covariance research with limited methodological comparisons. Non-CO2 greenhouse
Bruno D. V. Marino +2 more
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The use of disjunct eddy sampling methods for the determination of ecosystem level fluxes of trace gases [PDF]
Atmospheric Chemistry and Physics, 2009 The concept of disjunct eddy sampling (DES) for use in measuring ecosystem-level micrometeorological fluxes is re-examined. The governing equations are discussed as well as other practical considerations and guidelines concerning this sampling method as ...
A. A. Turnipseed +8 more
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On evapotranspiration and eddy covariance measurements corrections [PDF]
, 2020 Abstract. Eddy Covariance (EC) technique is one of the most used technique monitoring Green House Gases (GHG) fluxes such as H2O, CO2, CH4. Water vapor movement and corresponding air density fluctuations were corrected by Webb et al. (1980) but not water vapor formation.
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Some aspects of the energy balance closure problem [PDF]
Atmospheric Chemistry and Physics, 2006 After briefly discussing several reasons for the energy balance closure problem in the surface layer, the paper focuses on the influence of the low frequency part of the turbulence spectrum on the residual. Changes in the turbulent fluxes in this part of
T. Foken +4 more
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