Technical Note: Time lag correction of aquatic eddy covariance data
نویسندگان
چکیده
Introduction Conclusions References
منابع مشابه
A simple method for estimating frequency response corrections for eddy covariance systems
A simple analytical formula is developed for estimating the frequency attenuation of eddy covariance fluxes due to sensor response, path-length averaging, sensor separation, signal processing, and flux averaging periods. Although it is an approximation based on flat terrain cospectra, this analytical formula should have broader applicability than just flat-terrain providing the peak frequencies...
متن کاملStress Transfer Modeling in CNT Reinforced Composites using Continuum Mechanics (TECHNICAL NOTE)
Because of the substantial difference in stiffness between matrix and nanotube in CNT composite, the stress transfer between them controls their mechanical properties. This paper investigates the said issue, analytically and numerically, in axial load using representative volume element (RVE). The analytical model was established based on the modified Cox’s shear lag model with the use of some ...
متن کاملContinuous measurement of air–water gas exchange by underwater eddy covariance
Exchange of gases, such as O2, CO2, and CH4, over the air–water interface is an important component in aquatic ecosystem studies, but exchange rates are typically measured or estimated with substantial uncertainties. This diminishes the precision of common ecosystem assessments associated with gas exchanges such as primary production, respiration, and greenhouse gas emission. Here, we used the ...
متن کاملClasses of Nonseparable , Spatio - temporal
Suppose that a random process Z(s; t), indexed in space and time, has a spatio-temporal stationary covariance C(h; u), where h 2 IR d (d 1) is a spatial lag and u 2 IR is a temporal lag. Separable spatio-temporal covariances have the property that they can be written as a product of a purely spatial covariance and a purely temporal covariance. Their ease of deenition is counterbalanced by the r...
متن کاملOxygen optodes as fast sensors for eddy correlation measurements in aquatic systems
The aquatic eddy-correlation technique can be used to noninvasively determine the oxygen exchange across the sediment-water interface by analyzing the covariance of vertical flow velocity and oxygen concentration in a small measuring volume above the sea bed. The method requires fast sensors that can follow the rapid changes in flow and the oxygen transported by this flow to calculate the momen...
متن کامل