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Non-stationary Generation of Weak Turbulence for Very Stable and Weak-Wind Conditions

Creator:

Mahrt, Larry, Thomas, Christoph, Richardson, Scott, Seaman, Nelson, Stauffer, David, and Zeeman, Matthias

Abstract:

Turbulence measurements for very stable conditions near the surface are contrasted among three sites: a high altitude basin during winter with grass or snow-covered grass, a broad valley with complex agricultural land use, and a more narrow valley that is influenced by a valley cold pool and cold air drainage....

Resource Type:

Article
Turbulence in the nocturnal boundary layer with light and variable winds

Creator:

Mahrt, L., Richardson, Scott, Seaman, Nelson, and Stauffer, David

Abstract:

Turbulence quantities are analyzed from nine months of data collected on the floor of a valley where nocturnal cold pools are frequent. Often the speed of the vector-averaged wind over the night is less than 0.5 m s−1 (near-calm winds) with no preference for wind direction. The quantity of such...

Resource Type:

Article