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Flux Richardson number measurements in stable atmospheric shear flows

Content Provider	Scilit
Author	Pardyjak, E. R. Monti, P. Fernando, H. J. S.
Copyright Year	2002
Description	The flux Richardson number $R_{f}$ (also known as the mixing efficiency) for the stably stratified atmospheric boundary layer is investigated as a function of the gradient Richardson number $Ri_{g}$ using data taken during two field studies: the Vertical Transport and Mixing Experiment (VTMX) in Salt Lake City, Utah (October 2000), and a long-term rural field data set from Technical Area 6 (TA-6) at Los Alamos National Laboratory, New Mexico. The results show the existence of a maximum $R_{f}$ (0.4–0.5) at a gradient Richardson number of approximately unity. These large-Reynolds-number results agree well with recent laboratory stratified shear layer measurements, but are at odds with some commonly used $R_{f}$ parameterizations, particularly under $high-Ri_{g}$ conditions. The observed variations in buoyancy flux and turbulent kinetic energy production are consistent with the concept of global intermittency of the atmospheric stable boundary layer.
Related Links	https://www.cambridge.org/core/services/aop-cambridge-core/content/view/9E95F895121CC61A482737F87574D5D1/S0022112002008406a.pdf/div-class-title-flux-richardson-number-measurements-in-stable-atmospheric-shear-flows-div.pdf
Ending Page	316
Page Count	10
Starting Page	307
ISSN	00221120
e-ISSN	14697645
DOI	10.1017/s0022112002008406
Journal	Journal of Fluid Mechanics
Volume Number	459
Language	English
Publisher	Cambridge University Press (CUP)
Publisher Date	2002-05-25
Access Restriction	Open
Subject Keyword	Journal of Fluid Mechanics Atmospheric Sciences Air Flow Turbulent Kinetic Energy Atmospheric Boundary Layer Field Study Reynolds Number Shear Flow Fluid Mechanics Richardson Number Field Experiment
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Mechanics of Materials Condensed Matter Physics Mechanical Engineering

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