MacDonald, Alexander Forsyth, 1897-1965 · Port Credit, Ont. : Aviation Service Corporation · leaf 50
rnal (Daily) Variation of Wind is caused by sirongsurface heating during the day which causes turbulencein the lower levels. This turbulance brings down airfrom higher levels which is moving faster and increasesthe surface wind. At night there is less turbulence andthe surface winds become lighter.… … Fig. X. Wind Flow over Mountain will cause the flow of air to become turbulent, likewater flowing over a rough stream bed. On the lee-ward side of mountains or obstacles such as buildings,high shore lines, etc., the wind will flow downward. causing a DOWN-DRAFT. If the wind velocity isstrong,…
Airplanes
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
