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Objective forecasting techniques are established for the average value of the ceiling at Denver of duration of three consecutive hourly observations or longer during the 6-hour period beginning 6 hours after the surface map used. Due to marked diurnal effects on ceilings and forecast variables,...
The operation, in a high flying airplane, of a simple 16 mm time lapse motion picture camera produces an excellent record of the cloud systems and other visual atmospheric patterns existing over large areas of continent and ocean.Over the past several years such records were obtained from both...
Before you decide on an ILS runway, you must carefully study the frequency of instrument weather, wind directions and speeds. This involves choosing the right ceiling and visibility increments and allowing for such operational factors as cross-wind components.If you don't make this study, your...
A study is made of meteorological conditions associated with synoptic patterns passing over the Middle West leading to super-refractive index profiles. The signal strength for a 71.75 mc TV-link in Illinois is related to the refractive index profiles.
The methods for computing instantaneous upper-level pressure or height tendencies are revised to allow computation of the 500 mb height tendency using the observed surface (or sea-level) pressure tendency and an appropriate portion of the 1000500 mb thickness advection. An evaluation is made as...
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