air temperature


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air temperature

[′er ¦tem·prə·chər]
(meteorology)
The temperature of the atmosphere which represents the average kinetic energy of the molecular motion in a small region and is defined in terms of a standard or calibrated thermometer in thermal equilibrium with the air.
The temperature that the air outside of the aircraft is assumed to have as indicated on a cockpit instrument.

Air temperature

A measure of the heat energy contained in ambient air.

air temperature

The various types of temperatures include:
i. Indicated air temperature (IAT). The uncorrected reading from the free air temperature gauge.
ii. Basic air temperature (BAT). The indicated air temperature corrected for instrument error.
iii. True air temperature (TAT). The basic air temperature corrected for the temperature rise resulting from the heat of compression and skin friction. Also known as outside air temperature (OAT).
iv. Corrected mean temperature. The temperature of the static air; this is the same as ambient temperature and true air temperature.
v. Ram air temperature (RAT). The static air temperature plus temperature rise because of compressibility. It is usually 80% of true air temperature.
vi. Total air temperature (TAT). The temperature actually sensed by the temperature probe (i.e., BAT or basic air temperature). It is ambient temperature plus rise resulting from compressibility plus rise from skin friction. air terminal A facility on an airfield that functions as an air transportation hub and accommodates the loading and unloading of airlift aircraft and the intransit processing of traffic. The airfield may or may not be designated as an aerial port.
References in periodicals archive ?
Daily climatic data, including air temperature, relative humidity, atmospheric pressure, and rainfall were obtained from the Zunyi County Meteorological Bureau, the government agency in charge of collection of meteorological data in Zunyi.
Outside air temperature during this period ranged from 57 [degrees]F (13.9 [degrees]C) to 91 [degrees]F (32.8 [degrees]C).
We used the Penman-Monteith combination equation to calculate daily E[T.sub.0] by using air temperature, humidity, sunshine hours, and wind speed.
The relatively negligible influence of air temperature on drop sizing is clearly evidenced in the graphs in Figure 9.
The lowest morning air temperature between 10 and 16, in the south of the country up to 18 degrees.
In high-altitude areas, air temperature will fall to -27...32 at night, and -9--14 at daytime.
Dewater being needed for landscaping and partment of Energy's Lawrence Berkeley National Laboratory has found that in addition to reducing air temperatures, cool roofs can also save water.
While air temperature and pressure have substantial impacts on how a bullet performs in flight, how cars perform on a track test and how baseballs fly, only air temperature impacts muzzle velocity.
The atmospheric air temperature is increasing due to major heat release in exhaust gas from the diesel engines.