tenek kütlesi

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Турецкий язык - Английский Язык
air mass
a widespread body of air, the properties of which can be identified as:

undergoing specific modifications while in transit away from the source region. An air mass is often defined as a widespread body of air that is approximately homogeneous in its horizontal extent, particularly with reference to temperature and moisture distribution; in addition, the vertical temperature and moisture variations are approximately the same over its horizontal extent.

a body of air covering a relatively wide area and exhibiting horizontally uniform properties
large body of air with particular characteristics of temperature and humidity
a large body of air with a fairly uniform temperature and moisture throughout The transition zone between different air masses is called a front In a cold front, cold air is replacing warm; in a warm front, warm air is replacing the cold
A large body of air with only small horizontal variations of temperature, pressure, and moisture. In meteorology, a large body of air having nearly uniform conditions of temperature and humidity at any given altitude. Such a mass has distinct boundaries and may extend hundreds or thousands of miles horizontally and sometimes as high as the top of the troposphere. An air mass forms whenever the atmosphere remains in contact with a large, relatively uniform land or sea surface long enough to acquire its temperature and moisture properties. The Earth's major air masses all originate in polar or subtropical latitudes. The middle latitudes constitute essentially a zone of modification, interaction, and mixing of the polar and tropical air masses
A large body of air with the uniform temperature and humidity of its source region
A very large body of atmosphere defined by essentially similar horizontal air temperatures Moisture conditions are also usually similar throughout the mass
Large body of air, often hundreds or thousands of miles across, containing air of a similar temperature and humidity Sometimes the differences between air masses are hardly noticeable, but if colliding air masses have very different temperatures and humidity values, storms can erupt See front
A large scale portion of the earth's atmosphere whose properties (principally temperature and moisture) are approximately uniform A system commonly used to classify air according to their source regions In this system, air masses are identified according to the thermal and moisture properties of their source region Thermal identifications are tropical (T), polar (P), and less frequently, arctic (A) or antarctic (AA) Moisture characterizations are continental (c), which is relatively dry, and maritime (m), which is relatively moist
a large body of air all of similar temperature and humidity
a large, horizontal parcel of air that has similar temperatures and humidity throughout
The ratio of the mass of atmosphere in the actual observer-sun path to the mass that would exist if the observer was at sea level, at standard barometric pressure, and the sun was directly overhead Note(sometimes called air mass ratio) Air mass varies with the zenith angle of the sun and the local barometric pressure, which changes with altitude For sun zenith angle, Z, of 62 degrees or less and local atmospheric pressure, P, where Po is standard atmospheric pressure, AM approximately equal sec Z(P/Po) Alternatively, the path length of light through the atmosphere is described in terms of an equivalent relative air mass AM0 corresponds to the solar spectrum in outer space; at the equator, the average spectrum is AM1, and the reference spectrum for STC was defined to be AM1 5 (average spectrum at 45-degrees latitude)
A large body of air having similar horizontal temperature and moisture characteristics
a very large area of air with the same temperature throughout
An air mass, by definition, is a large dome of air which has similar horizontal temperature and moisture characteristics Often, a front separates two different air masses Fronts are very narrow zones of transition In other words, temperatures can change dramatically with short horizontal distances near fronts Fronts are usually anywhere from 10 kilometers to hundreds of kilometers wide, while air masses can be thousands of kilometers wide
section of air that maintains a consistent temperature and pressure
A meteorological term referring to an extensive body of air within which the conditions of temperature and moisture in a horizontal plane are essentially uniform
An extensive body of air throughout which the horizontal temperature and moisture characteristics are similar
a large body of air with uniform characteristics horizontally
The air mass is a number, which expresses a relative amount of atmosphere between the sun and the Sun photometer The size of the air mass depends on the sun angle measured at the time that a sun photometer reading is being taken If the measurement were taken directly below the sun at position A, then the sun angle would be 90° at position A But usually the measurement is taken at an angle measured from the horizon at position B The path of sun light is "slanted" away from the vertical This is known as the "slant path"
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