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The stably stratified boundary layer over the great plains

✍ Scribed by Donald H. Lenschow; Shi F. Zhang; B. Boba Stankov

Publisher: Springer
Year: 1988
Tongue: English
Weight: 665 KB
Volume: 42
Category: Article
ISSN: 0006-8314
DOI: 10.1007/bf00119878

No coin nor oath required. For personal study only.

✦ Synopsis

Airplane measurements of the stably stratified boundary layer obtained during the Severe Environmental Storms and Mesoscale Experiment (SESAME) over rolling terrain in south-central Oklahoma indicate that considerable horizontal variability exists in the flow on scales of several kilometers. Much of this wave-like structure appears to be tied to the terrain. The criteria for existence of stationary gravity waves indicate that these waves can exist under the observed conditions. The spectrum of terrain variations also supports the existence of these waves. Observed spectra of the vertical velocity have two peaks: one at wavelengths of several kilometers, which is due to waves and the other at wavelengths of about 100 m, which is due to turbulence. The variance at several kilometers wavelength increases somewhat with height at least up to about 800 m, but the variance contributed by turbulence decreases rapidly with height.

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