Results 41 to 50 of about 592,628 (248)

The Near-Calm Stable Boundary Layer [PDF]

open access: yesBoundary-Layer Meteorology, 2011
For the near-calm stable boundary layer, nominally 2-m mean wind speed
openaire   +1 more source

Evaluation of a Buoyancy and Shear Based Mixing Length for a Turbulence Scheme

open access: yesFrontiers in Earth Science, 2017
We present a new diagnostic mixing length for a turbulence scheme based on a prognostic equation for the turbulence kinetic energy. The formulation adds a local vertical wind shear term to the non-local buoyancy-based mixing length currently used in the ...
Quentin Rodier   +3 more
doaj   +1 more source

Unconditionally stable perfectly matched layer boundary conditions [PDF]

open access: yesphysica status solidi (b), 2007
AbstractA brief review is given of a systematic, product‐formula based approach to construct unconditionally stable algorithms for solving the time‐dependent Maxwell equations. The fundamental difficulties that arise when we want to incorporate uniaxial perfectly matched layer boundary conditions into this scheme is discussed. We construct an algorithm
De Raedt, H., Michielsen, K.
openaire   +1 more source

Local similarity in the stable boundary layer and mixing-length approaches: consistency of concepts [PDF]

open access: yes, 2008
In stably stratified flows vertical movement of eddies is limited by the fact that kinetic energy is converted into potential energy, leading to a buoyancy displacement scale z B .
Jonker, H.J.J.   +3 more
core   +2 more sources

Fiber optic distributed temperature sensing for the determination of the nocturnal atmospheric boundary layer height [PDF]

open access: yesAtmospheric Measurement Techniques, 2011
A new method for measuring air temperature profiles in the atmospheric boundary layer at high spatial and temporal resolution is presented. The measurements are based on Raman scattering distributed temperature sensing (DTS) with a fiber optic cable ...
C. A. Keller   +6 more
doaj   +1 more source

A method to diagnose boundary-layer type using Doppler lidar [PDF]

open access: yes, 2013
A new technique for objective classification of boundary layers is applied to ground-based vertically pointing Doppler lidar and sonic anemometer data.
Albrecht   +40 more
core   +1 more source

Investigating Neutral and Stable Atmospheric Surface Layers Using Computational Fluid Dynamics

open access: yesAtmosphere, 2022
Computational fluid dynamics (CFD) is an effective technique for investigating atmospheric processes at a local scale. For example, in near-source atmospheric dispersion applications, the effects of meteorology, air-pollutant sources, and buildings can ...
Fraser Gemmell
doaj   +1 more source

Scale-Dependent Turbulent Dynamics and Phase-Space Behavior of the Stable Atmospheric Boundary Layer

open access: yesAtmosphere, 2020
The structure of turbulent dynamics in a stable atmospheric boundary layer was studied by means of a phase-space description. Data from the CASES-99 experiment, decomposed in local modes (with increasing time scale) using empirical mode decomposition ...
Francesco Carbone   +5 more
doaj   +1 more source

Areal-averaged trace gas emission rates from long-range open-path measurements in stable boundary layer conditions [PDF]

open access: yesAtmospheric Measurement Techniques, 2012
Measurements of land-surface emission rates of greenhouse and other gases at large spatial scales (10 000 m<sup>2</sup>) are needed to assess the spatial distribution of emissions.
K. Schäfer   +5 more
doaj   +1 more source

Simulating Dispersion in the Evening-Transition Boundary Layer [PDF]

open access: yes, 2018
This is the author accepted manuscript. The final version is available from Springer Verlag via the DOI in this recordWe investigate dispersion in the evening-transition boundary layer using large-eddy simulation (LES).
Beare, RJ, Taylor, AC, Thomson, DJ
core   +1 more source

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