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Agriculture angle animal annual range anticyclonic systems aphelion arctic Atlantic Ocean atmosphere average Bermuda borders cause CHIEF U. S. WEATHER climate.—If cold wave colder winters continental climate continents daily range depth of air dryness and equability Effect of forests elevation Encyclopedia Americana equability of temperature equable temperature equinox fall with increasing feet globe Gulf of Mexico Gulf Stream heat and cold heat waves height humid increasing obliquity intensity invigorating effect James Wilson June 21 land surfaces length marine climates marked changes maximum of heat mean summer temperature mean winter temperature Meteorology midday middle latitudes mountain peaks Northern Hemisphere occurs ocean currents parallel of latitude perature perihelion physical produced quantity of heat radiation rainfall raise a pound received each day Rocky Mountains soil Southern Hemi southward Southwest sun crosses sun's rays temperate thermometer tion Tropics ture U. S. Department U. S. WEATHER BUREAU variation vegetation warm warmer summers widely-varying zone
Pagina 14 - The temperature of the Southwest is not equable in the sense of having an extremely small daily range, but it possesses the quality of annual uniformity in a greater degree than will generally be found elsewhere except on the seacoast, and there the humidity is great.
Pagina 7 - Klipa, a slope or inclination. The term was used to denote the effect of the oblique rays of the sun on the temperature of the earth and its atmosphere. Today it is applied to the sum of the atmospheric conditions as recorded for a long period of time; or, in other words, it is the totality of weather, while " weather " is the physical condition of the atmosphere at a given time, or during a limited period.
Pagina 15 - Climate is the most potent of any factor in the environment of races. It is climate and soil plus heredity and form of government that produce either vigorous or weak peoples. In this respect it is a question if the United States does not possess a constant potential that , all other conditions being equal, places it in a class by itself. " The sweep of the cold wave, as it is known in the United States, is quite distinctly North American.
Pagina 11 - The atmosphere is thus warmed from the bottom upward. This accounts for the perpetual freezing temperatures of very high mountain peaks, although they are nearer the sun than are the bases from which they rise. At the height of one mile in free air the temperature is about the same at midday as at midnight. Only during recent years have we begun to realize how extremely thin is the stratum of air next the earth that has sufficient heat for the inception, growth, and maturity of both animal and vegetable...
Pagina 11 - ... vegetable life. The raising of the thermometer shelter at the New York City observatory from an elevation of 150 feet above the street to an elevation of 300 feet, has caused an apparent lowering of the mean annual temperature of 2.5° F. On the hottest day in summer, if one could be lifted up to a height of only 1000 feet in free air, he would find a marked change in temperature. The United States Weather Bureau at 16 stations made a total of over 1200 kite observations in the United States...
Pagina 14 - Within the broad confines of the United States there are many, but not all, shades and varieties of climate. One of the questions most frequently asked is: "Where shall I find a climate possessing both dryness and equability of temperature?
Pagina 11 - ... never of watery droplets like the lower cumulus clouds. In the middle latitudes of both hemispheres the air at this height is ceaselessly rushing toward the east, passing uninterruptedly over the cyclonic and anticyclonic systems that cause our storms and cold waves at the surface of the earth. Glaisher and an assistant ascended to a height of about 30,000 feet.
Pagina 16 - ... area. It is probable that much of the physical and the intellectual energies that have caused the United States to excel in agriculture, in manufacturing, and in commerce, were produced by the invigorating effect of the cold, dry, highly electrified air of the North American cold wave. The anticyclonic systems of air that constitute cold waves have a marked downward component of motion. This motion brings from a considerable altitude to the surface of the earth some of the high electrical potential...
Pagina 14 - It has been said that climate affects the health, happiness, and well-being of people more than any other factor that enters into their environment.
Pagina 19 - ... zone, we have the following classification: While in a general way these zones stretch around the world in wavy belts, somewhat as do the isotherms, similar belts may be found encircling mountain peaks and chains with increasing altitude above sea level. Indeed, it is possible to pass successively from tropic to arctic vegetation on a single mountain peak in the Tropics. Jiibliography — Abercromby, " Weather " (International Scientific Series); Bacon, "Climate and the Atmosphere," in the "Nineteenth...