Journal ArticleDOI
Night drainage winds
Z. Petkovšek,A. Hočevar +1 more
- Vol. 20, Iss: 4, pp 353-360
TLDR
In this article, a simple model of night drainage winds is presented giving the wind velocity of a cooled layer as a function of the following parameters: net radiation loss, friction coefficient, the angle of the slope and the lapse rate in the environment above the treated layer.Abstract:
A very simple model of night drainage winds is presented giving the wind velocity of a cooled layer as a function of the following parameters: net radiation loss, friction coefficient, the angle of the slope and the lapse rate in the environment above the treated layer.read more
Citations
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Journal ArticleDOI
Nocturnal drainage flow on simple slopes
T. W. Horst,J. C. Doran +1 more
TL;DR: In this article, the authors measured wind and temperature profiles from towers that extended through the depth of the katabatic flow and found that the turbulent kinetic energy profiles in slope flow are dependent on the speed and direction of the ambient wind and can differ substantially from those found over flat terrain.
Journal ArticleDOI
Katabatic winds: A field case study
P. C. Manins,B. L. Sawford +1 more
TL;DR: In this paper, a case study of katabatic winds utilizing tethered balloon profiling equipment is presented and discussed and the data are unique in the detail they provide of both vector wind and potential virtual temperature throughout the flow.
Journal ArticleDOI
A Mathematical Model for Diagnosis and Prediction of Surface Winds in Mountainous Terrain.
TL;DR: In this paper, a mathematical model was developed on the premise that mountain winds are the result of vector addition of wind components generated and modified by these influences, and the model was designed primarily for use in estimating wildland fire danger and computing fire spread in southern California.
Journal ArticleDOI
Katabatic Flow Mechanisms on a Low-Angle Slope
Thomas Haiden,C. David Whiteman +1 more
TL;DR: In this article, the authors evaluated wind and potential temperature data from four tethered-balloon data collection systems on a 3-km line running down a 1.6° slope at the foot of the Oquirrh Mountains in Utah's Great Salt Lake valley.
Journal ArticleDOI
Velocity and Temperature Oscillations in Drainage Winds
J. C. Doran,T. W. Horst +1 more
TL;DR: In this article, the authors presented spectra of the time series of wind speeds and temperatures measured in the outflow area of a large drainage region, where peaks are found in these spectra at frequencies corresponding to periods of oscillation of ∼1.5 h.
References
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Journal ArticleDOI
a Theory of Air Drainage.
TL;DR: In this paper, the authors derived an equation of motion for a compressible fluid cooling at the bottom by contact with a radiating surface of uniform slope and large extent, and concluded tentatively that the assumption of a frictional force which is proportional to the square of the velocity gives fairly realistic results.
Journal ArticleDOI
A theoretical explanation of mountain and valley winds by a numerical method
TL;DR: In this article, a theoretical model of the local circulation in a valley is obtained, where the region under study consists of a V-shaped trough of finite length leading into a flat plain, and a given rate of heat flow from ground to air is assumed.
Journal ArticleDOI
Valley winds in the mount Rainier area
TL;DR: In this article, a well-developed valley wind system tends to have the following features: airflow within a valley is up the valley during the day and down it at night and is compensated by a return flow (anti-wind) at a higher level.