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Use of the micrometeorological data in the computation of the friction velocity

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Published by Naval Postgraduate School in Monterey, California .
Written in English


  • Meteorology

Book details:

ID Numbers
Open LibraryOL25159359M

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The measurement of turbulent fluxes in the atmospheric boundary layer is usually performed using fast anemometers and the Eddy Covariance technique. This method has been applied here and investigated in a complex mountainous terrain. A field campaign has recently been conducted at Alpe Veglia (the Central-Western Italian Alps, m a.s.l.) where both standard and micrometeorological data Author: Alessio Golzio, Irene Maria Bollati, Silvia Ferrarese.   The operational use of remote-sensing thermal data can be optimized by using it to feed decision support systems (DSS). DSS enable the use of models/indexes to convert acquired data into valuable information for crop and vineyard management, namely, irrigation and crop protection (Rossi et al., ; Pérez-Expósito et al., ). The characteristics of the vertical and temporal structure of the coastal atmospheric boundary layer are variable for different sites and are often not well known. Continuous monitoring of the atmospheric boundary layer was carried out close to the Tyrrhenian Sea, near Tarquinia (Italy), in – A ground-based remote sensing instrument (triaxial Doppler sodar) and in situ sensors Author: Igor Petenko, Giampietro Casasanta, Simone Bucci, Margarita Kallistratova, Roberto Sozzi, Stefania A. This is true even if the resolved wind in the lowest level of the grid becomes very close to zero, which would otherwise result in the computation of zero for the friction velocity. We set this minimum value of the horizontal velocity equal to m/s for the Askervein runs, m/s for the Black Mountain runs, and m/s for the Cooper's Cited by:

@article{osti_, title = {Estimates of advection and diffusion in the Potomac estuary}, author = {Elliott, A J}, abstractNote = {A two-layered dispersion model, suitable for application to partially-mixed estuaries, has been developed to provide hydrological interpretation of the results of biological sampling. The model includes horizontal and vertical advection plus both horizontal and. The modeled outputs of se nsible heat and friction velocity were compared to the actual CSAT3 measurements (n = 4,) made at the tower. In addition, the modeled outputs of sensible and latent heat, the dimensionless heat transfer coefficient, and friction velocity were used for inter-model comparisons of flux parameters (n = 4,).   The major processes influencing the air-sea transfer velocity are described here. This includes processes important for a relatively insoluble gas like CO 2: micro scale wave breaking, small and large scale turbulence in the water, waves, bubbles, sea spray, rain and surface films (see Fig. ).In addition biological and chemical enhancement is described having been recognised as Cited by: We used the meteorological data of the first hours to simulate the dispersion with the proposed model. The data presentd in Table 1 were calculated in [8] based on the dataset of reference [4]. The data and represent the wind speed in 10 meters, the friction velocity, Monin-Obukhov length and the height of the planetary boundary layer Author: Everson J. Silva, Daniela Buske, Tiziano Tirabassi, Bardo Bodmann, Marco T. Vilhena.

Abstract. The objective of this chapter is to provide a comprehensive statement of the experimental methods that can be used to transduce the velocity and its companion quantity: vorticity (∇ × u ¯ Open image in new window).Velocity measurements can be understood to represent spatially integrated and pointwise values. Thermal transient anemometry (Sect. ) and sonic anemometers (Sect. 5.   CTGPROC is a land use preprocessor which reads the compressed CTG land use data file and computes the fractional land use for each grid cell in the user-specified modeling domain. I: PRLND1 is a land use preprocessor which reads the ARM3 data base of land use data and computes fractional land use for each grid cell in. Train Aerodynamics: Fundamentals and Applications is the first reference to provide a comprehensive overview of train aerodynamics with full scale data results. With the most up-to-date information on recent advances and the possibilities of improvement in railway facilities, this book will benefit railway engineers, train operators, train. Better still, dispersion curves that are specifically formulated for near surface releases and reflect the current understanding of dispersion and micrometeorology (Cimorelli et al., ) could be used. This option requires expressing model inputs in terms of variables, such as friction velocity, which controls dispersion as well as emissions.