A Refinement of the Millionshchikov Quasi-Normality Hypothesis for Convective Boundary Layer Turbulence-Reference-Cited by-同舟云学术

A Refinement of the Millionshchikov Quasi-Normality Hypothesis for Convective Boundary Layer Turbulence

Published:2005-07-01 Issue:7 Volume:62 Page:2632-2638
ISSN:1520-0469
Container-title:Journal of the Atmospheric Sciences
language:en
Short-container-title:

Author:

Gryanik Vladimir M.¹,Hartmann Jörg²,Raasch Siegfried³,Schröter Michael³

Affiliation:

1. Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany, and A. M. Obukhov Institute of Atmospheric Physics, Russian Academy of Sciences, Moscow, Russia

2. Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany

3. University of Hannover, Hannover, Germany

Abstract

Abstract The Millionshchikov hypothesis of quasi-normal distribution of fourth-order moments fails for convective conditions where the probability density functions of temperature and vertical velocity fluctuations are skewed. This is shown for aircraft and large-eddy simulation (LES) data, and new closures for fourth-order moments that take the skewness into account are suggested. These new closures are in very good agreement with the data.

Publisher

American Meteorological Society

Subject

Atmospheric Science

Link

http://journals.ametsoc.org/jas/article-pdf/62/7/2632/3483895/jas3457_1.pdf

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