Smoke Flow Visualization in a Tributary of a Deep Valley

Smoke pot and oil fog smoke tracers have been used to plan meteorological instrument placement and quantitatively estimate air volume flow from a tributary during nocturnal drainage wind conditions. The estimated volume flow agrees well with estimates of the flow using tethered-balloon and remotely...

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Bibliographic Details
Published in:Bulletin of the American Meteorological Society 1989-01, Vol.70 (1), p.30-35
Main Authors: Porch, W. M., Barr, S., Clements, W. E., Archuleta, J. A., Fernandez, A. B., King, C. W., Neff, W. D., Hosker, R. P.
Format: Article
Language:English
Subjects:
Air flow
Canyons
Convection, turbulence, diffusion. Boundary layer structure and dynamics
Creeks
Earth, ocean, space
Exact sciences and technology
External geophysics
Flow visualization
Meteorology
Sloping terrain
Smoke
Tributaries
Valleys
Waterfalls
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Summary:Smoke pot and oil fog smoke tracers have been used to plan meteorological instrument placement and quantitatively estimate air volume flow from a tributary during nocturnal drainage wind conditions. The estimated volume flow agrees well with estimates of the flow using tethered-balloon and remotely obtained wind velocity measurements. The smoke visualization shows a very complex flow structure caused by tributary flow interactions with the flow down the main valley. The magnitude of the outflow volume from the tributary was greater than expected. If the tributary studied is representative of the other tributaries in the valley, most of the volume flow in the main valley may enter through the tributaries.
ISSN:0003-0007
1520-0477
DOI:10.1175/1520-0477(1989)070<0030:SFVIAT>2.0.CO;2