Aeronautical MeteorologyRonald Press Company, 1925 - 144 pages Beskriver vejrfænomener, der er relevante for flyvning. |
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Expressions et termes fréquents
Aeronautical Meteorology aeronautics aircraft altitude alto-cumulus amount anemometer annual number anticyclones Atlantic atmosphere Azores balloons barometer Beaufort scale Calif changes cirrus clouds coast convection Cumulo-nimbus cumulus decrease density directions and velocities earth eastward Ellendale Figure flight flying free-air wind free-balloon frequency gales grams Groesbeck height horse latitudes humidity increase indicate isobars kilometers above sea kites land less Meisinger miles per hour millibars Monthly Weather Review Mount Weather move northern northwest number of days objects not visible observations Observatory occur owing percentage pressure distribution prevailing rain or snow rate of movement regions Rocky Mountains sea level Seasonal Free-air southern southwest speed stations storm surface winds TABLE temperature thermal thunderstorms tion trade winds U. S. Weather Bureau United States east upper usually Washington Weather Forecasting weather map westerly wind direction wind velocity winter ΙΟ ΙΟ
Fréquemment cités
Page 60 - Woolpack Clouds — Thick clouds of which the upper surface is dome-shaped and exhibits protuberances, while the base is horizontal. These clouds appear to be formed by a diurnal ascensional movement which is almost always observable. When the cloud is opposite the sun, the surfaces usually presented to the observer have a greater brilliance than the margins of the protuberances.
Page iii - We are at the opening verse of the opening page of the chapter of endless possibilities.
Page 61 - Rain Clouds. — A thick layer of dark clouds, without shape and with ragged edges, from which steady rain or snow usually falls.
Page 60 - Heavy masses of cloud rising in the form of mountains, turrets, or anvils, generally surmounted by a sheet or screen of fibrous appearance (false cirrus) and having at its base a mass of cloud similar to nimbus. From the base local showers of rain or snow (occasionally of hail or soft hail) usually fall. Sometimes the upper edges assume the compact form of cumulus, and form massive peaks round which delicate "false cirrus
Page 60 - Large globular masses or rolls of dark clouds often covering the whole sky, especially in winter. Generally St.-Cu. presents the appearance of a gray layer irregularly broken up into masses of which the edge is often formed of smaller masses, often of wavy appearance resembling A.-Cu. Sometimes this cloud-form presents the characteristic appearance of great rolls arranged in parallel lines and pressed close up against one another. In their centers these rolls are of a dark color. Blue sky may be...
Page 110 - Sky red In the morning Is a sailor's sure warning; Sky red at night Is the sailor's delight But in many ways the most interesting of all those proverbs that have to do with red sunrise and red sunset is the one which, according to Matthew, Christ used in answer to the Pharisees and Sadducees when they asked that He would show them a sign from heaven. He...
Page 60 - Bather large globular masses, white or grayish, partially shaded, arranged in groups or lines, and often so closely packed that their edges appear confused.
Page 59 - ... completely and giving it only a milky appearance (it is then called Cirronebula), at other times presenting, more or less distinctly, a formation like a tangled web. This sheet often produces halos around the sun and moon. 3. CIRRO-CUMULUS (Ci.-Cu.), MACKEREL SKY. — Small globular masses or white flakes without shadows, or showing very slight shadows, arranged in groups and often in lines.
Page 61 - Sometimes the upper edges assume the compact form of cumulus, and form massive peaks round which delicate " false Cirrus " floats. At other times the edges themselves separate into a fringe of filaments similar to Cirrus clouds. This last form is particularly common in spring showers. The front of thunder•clouds of wide extent frequently presents the form of a large arc spread over a portion of a uniformly brighter sky.
Page iii - It is the purpose of the editors to keep the Library continually abreast of every phase of aerial development. The division into separate volumes is governed by the needs of each branch of aeronautics. At the same time this permits of frequent revisions to keep pace with the progress of an expanding art. The arrangement of the text facilitates reference almost to the extent found in the standard engineering handbooks. Information is not limited to American experience; foreign sources are drawn upon...