Turbulent measurements in the stable atmospheric boundary layer during SHEBA: ten years after |
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| Authors: | Andrey A Grachev Edgar L Andreas Christopher W Fairall Peter S Guest P Ola G Persson |
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| Institution: | (1) NOAA Earth System Research Laboratory, Boulder, Colorado, USA;(2) Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, Colorado, USA;(3) NorthWest Research Associates, Inc. (Seattle Division), Lebanon, New Hampshire, USA;(4) Naval Postgraduate School, Monterey, California, USA |
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| Abstract: | This paper surveys results of the comprehensive turbulent measurements in the stable boundary layer (SBL) made over the Arctic
pack ice during the Surface Heat Budget of the Arctic Ocean experiment (SHEBA) in the Beaufort Gyre from October 1997 through
September 1998. Turbulent fluxes and mean meteorological data were continuously measured and reported hourly at five levels
on a 20-m main SHEBA tower. Eleven months of measurements during SHEBA cover a wide range of stability conditions, from the
weakly unstable regime to very stable stratification, and allow studying the SBL in detail.
A brief overview of the SBL regimes, the flux-profile relationships, the turbulent Prandtl number, and other parameters obtained
during SHEBA is given. The traditional Monin—Obukhov approach, z-less scaling, and gradient-based scaling are evaluated and discussed based on the data from SHEBA. |
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| Keywords: | flux-profile relationships Monin-Obukhov similarity theory Richardson number SHEBA stable boundary layer turbulent Prandtl number |
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