Budgets of Turbulent Energy and Temperature Variance in the Transition Zone from

Monji, Nobutaka

doi:10.2151/jmsj1965.51.2_133

Cited by 38 publications

(39 citation statements)

References 27 publications

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“…In doing so, we obtain: should be in agreement with the 1 3 behavior under freeconvective conditions. In accord with the empirical results of Wyngaard et al [103], Monji [104], and Tillman [105], the normalized standard deviation * shows a 1 3 behavior for the entire unstable range.…”

Section: Variance Relationshipsupporting

confidence: 85%

Similarity Hypotheses for the Atmospheric Surface Layer Expressed by Non-Dimensional Characteristic Invariants – A Review

Kramm¹,

Herbert²

2009

TOASCJ

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Abstract:In this paper, similarity hypotheses for the atmospheric surface layer (ASL) are reviewed using nondimensional characteristic invariants, referred to as -numbers. The basic idea of this dimensional -invariants analysis (sometimes also called Buckingham's -theorem) is described in a mathematically generalized formalism. To illustrate the task of this powerful method and how it can be applied to deduce a variety of reasonable solutions by the formalized procedure of non-dimensionalization, various instances are represented that are relevant to the turbulence transfer across the ASL and prevailing structure of ASL turbulence. Within the framework of our review we consider both (a) MoninObukhov scaling for forced-convective conditions, and (b) Prandtl-Obukhov-Priestley scaling for free-convective conditions. It is shown that in the various instances of Monin-Obukhov scaling generally two -numbers occur that result in corresponding similarity functions. In contrast to that, Prandtl-Obukhov-Priestley scaling will lead to only one number in each case usually considered as a non-dimensional universal constant.Since an explicit mathematical relationship for the similarity functions cannot be obtained from a dimensionalinvariants analysis, elementary laws of -invariants have to be pointed out using empirical or/and theoretical findings. To evaluate empirical similarity functions usually considered within the framework flux-profile relationships, so-called integral similarity functions for momentum and sensible heat are presented and assessed on the basis of the friction velocity and the vertical component of the eddy flux densities of sensible and latent heat directly measured during the GREIV I 1974 field campaign.

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Section: Variance Relationshipsupporting

confidence: 85%

Similarity Hypotheses for the Atmospheric Surface Layer Expressed by Non-Dimensional Characteristic Invariants – A Review

Kramm¹,

Herbert²

2009

TOASCJ

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“…l show less scatter, particularly on the in unstable side. It is apparent that z/L being under -0.35,*/u* is in good agreement with the predictions of free convection that the variance of vertical velocity is in proportion to (z/L)1/3 (Priestley, 1954 andMonji, 1973). …”

Section: Similarity Analysis Of Variancessupporting

confidence: 81%

“…In the strongly unstable case (z/L< -0.30), * is in proportion to (z/L)-1/3 as predicted in free convection (Priestley 1954 andMonji 1973). As in many other experiments, the data points in near neutral and stable stratification show a larger scatter.…”

Section: Similarity Analysis Of Variancessupporting

confidence: 65%

Turbulence Structure and Transfer Characteristics in the Surface Layer of the HEIFE Gobi Area

Wang

Mitsuta

1991

Journal of the Meteorological Society of Japan

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“…Wyngaard et al 1971;Monji 1973;Högström and Smedman-Högström 1974;Ohtaki 1985;Stull 1988;Högström 1990;Kader and Yaglom 1990;Albertson et al 1995;Katul et al 1995;Katul and Hsieh 1997;Asanuma and Brutsaert 1999). Larger values of A and B may be caused by random error (noise) in the turbulence sensor data and/or a poor correlation of w to u or X, i.e., by flux underestimation.…”

Section: Homogeneity Of Footprintmentioning

confidence: 99%

Turbulent Flux Observations at the Tip of a Narrow Cape on Miyako Island in Japan's Southwestern Islands

Tanaka

Hiyama

Nakamura

2008

Journal of the Meteorological Society of Japan

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Air-sea fluxes were observed to elucidate the lower boundary conditions in the development of an atmospheric boundary layer over sea from 14 to 27 August 2002. Fluxes were observed at the tip of a narrow cape on Miyako Island, in Japan's Southwestern Islands. Flux measurements and turbulence properties were clearly divided by fetch condition or wind direction. Analysis of the footprint area and homogeneity indicated that air-sea fluxes over an upwind sea surface were observed in cases of approximately 30% for all observation periods. The bulk transfer (BT), eddy covariance (EC), and variance (VA) methods were used to evaluate air-sea fluxes. The general features of the estimated fluxes were similar. Averaged sensible heat flux of approximately 6 W m −2 was obtained by all three methods, and the latent heat fluxes were 92, 60, and 71 W m −2 by the BT, EC, and VA methods, respectively. Daily mean net radiation input R NET was 223 W m −2 . The sea surface was a large energy sink during the observation period.

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Budgets of Turbulent Energy and Temperature Variance in the Transition Zone from

Cited by 38 publications

References 27 publications

Similarity Hypotheses for the Atmospheric Surface Layer Expressed by Non-Dimensional Characteristic Invariants – A Review

Similarity Hypotheses for the Atmospheric Surface Layer Expressed by Non-Dimensional Characteristic Invariants – A Review

Turbulence Structure and Transfer Characteristics in the Surface Layer of the HEIFE Gobi Area

Turbulent Flux Observations at the Tip of a Narrow Cape on Miyako Island in Japan's Southwestern Islands

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