On similarity in the atmospheric boundary layer

Sorbjan, Zbigniew

doi:10.1007/bf00120989

Cited by 147 publications

(116 citation statements)

References 13 publications

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“…Local similarity theory (Niuwstadt, 1984;Sorbjan, 1984Sorbjan, , 1986 has proved one of the most successful frameworks within which to examine turbulence under stable conditions. It has been applied to a variety of environments including many coastal regions (Shao and Hacker, 1990;Tjernström and Smedman, 1993;Rogers et al, 1995;Bange and Roth, 1999;Brooks and Rogers, 2000).…”

Section: Local Similaritymentioning

confidence: 99%

The Turbulence Structure of the Stable Atmospheric Boundary Layer Around a Coastal Headland: Aircraft Observations and Modelling Results

Brooks

Söderberg

Tjernström

2003

Boundary-Layer Meteorology

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The turbulence structure of a stable marine atmospheric boundary layer in the vicinity of a coastal headland is examined using aircraft observations and numerical simulation.Measurements are drawn from a flight by the NCAR C-130 around Cape Mendocino on the coast of Northern California on June 7 1996 during the Coastal Waves 96 field program.Local similarity scaling of the velocity variances is found to apply successfully within the continuously turbulent layer; the empirical scaling function is similar to that found by several previous studies. Excellent agreement is found between the modelled and observed scaling results. No significant change in scaling behaviour is observed for the region within the expansion fan that forms downstream of the cape, suggesting that the scaling can be applied to horizontally heterogeneous conditions; however, the precise form of the function relating scaled velocities and stability is observed to change close to the surface. This result, differences between the scaling functions found here and in other studies, and the departure of these functions from the constant value predicted by the original theory leads us to question the nature of the similarity functions observed. We hypothesize that the form of the functions is controlled by non-local contributions to the velocity variance budgets, and that differences in the non-local terms between studies explain the differences in the observed scaling functions.2

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Section: Local Similaritymentioning

confidence: 99%

The Turbulence Structure of the Stable Atmospheric Boundary Layer Around a Coastal Headland: Aircraft Observations and Modelling Results

Brooks

Söderberg

Tjernström

2003

Boundary-Layer Meteorology

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“…There is a long history of field experiments contributing to the continuing development of Monin-Obukhov similarity (e.g., Takeuchi 1961;Businger et al, 1971;Merry and Panofsky, 1976;Nieuwstadt, 1984a;Sorbjan, 1986;Brutsaert, 1992, Parlange andKatul, 1995;Mahrt et al, 1998). The experimental results for unstable conditions are extensive and are routinely used in applications .…”

Section: Introductionmentioning

confidence: 99%

On Monin–Obukhov Similarity In The Stable Atmospheric Boundary Layer

Pahlow

Parlange

Porté‐Agel

2001

Boundary-Layer Meteorology

219

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Abstract. Atmospheric measurements from several field experiments have been combined to develop a better understanding of the turbulence structure of the stable atmospheric boundary layer. Fast response wind velocity and temperature data have been recorded using 3-dimensional sonic anemometers, placed at several heights (≈1 m to 4.3 m) above the ground. The measurements were used to calculate the standard deviations of the three components of the wind velocity, temperature, turbulent kinetic energy (TKE) dissipation and temperature variance dissipation. These data were normalized and plotted according to Monin-Obukhov similarity theory. The non-dimensional turbulence statistics have been computed, in part, to investigate the general applicability of the concept of z-less stratification for stable conditions. From the analysis of a data set covering almost five orders of magnitude in the stability parameter ζ = z/L (from near-neutral to very stable atmospheric stability), it was found that this concept does not hold in general. It was only for the non-dimensional standard deviation of temperature and the average dissipation rate of turbulent kinetic energy that zless behaviour has been found. The other variables studied here (non-dimensional standard deviations of u, v, and w velocity components and dissipation of temperature variance) did not follow the concept of z-less stratification for the very stable atmospheric boundary layer. An imbalance between production and dissipation of TKE was found for the near-neutral limit approached from the stable regime, which matches with previous results for near-neutral stability approached from the unstable regime.

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“…Entretanto, a modelagem da CLE noturna tem sofrido um avanço com as informações extraídas de alguns experimentos [22,58,76], revelando uma similaridade local dos fluxos turbulentos.…”

Section: Camadas Limite Estável (Cle) E Neutra (Cln)unclassified

Modelagem Matemática em Turbulência Atmosférica

2010

Notas Em Matemática Aplicada

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On similarity in the atmospheric boundary layer

Cited by 147 publications

References 13 publications

The Turbulence Structure of the Stable Atmospheric Boundary Layer Around a Coastal Headland: Aircraft Observations and Modelling Results

The Turbulence Structure of the Stable Atmospheric Boundary Layer Around a Coastal Headland: Aircraft Observations and Modelling Results

On Monin–Obukhov Similarity In The Stable Atmospheric Boundary Layer

Modelagem Matemática em Turbulência Atmosférica

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