A common type of liquid-inglass thermometer, used, in meteorology, in psychrometers and as a maximum thermometer.

The center of an area of high pressure, usually accompanied by anticyclonic and outward wind flow. Also known as an anticyclone.

In the direction from which the wind is blowing.

An atmometer consisting of a porous porcelain or ceramic container connected to a calibrated reservoir filled with distilled water. Evaporation is determined by the depletion of water in the reservoir.

A hygrometer which includes an arrangement for the time recording of atmospheric humidity.

Of or pertaining to the air, atmosphere, or aviation. Also, same as antenna.

In general, any object that reflects incident energy. Usually it is a device designed for specific reflection characteristics.

See calorie.

The difference between the outgoing infrared terrestrial radiation of the earth's surface and the downcoming infrared counterradiation from the atmosphere.

A wooden enclosure about sixteen feet square and eight feet high with a precipitation gauge at its center. The function of the fence is to minimize eddies around the gauge and thus insure a catch that is representative of the actual rainfall or snowfall.

Literally "not wet", containing no liquid.

A rainbow formed by light rays which have been reflected from an extended water surface. Not to be confused with a reflected rainbow whose image may be seen in a still body of water. The center of a reflection rainbow is at the same elevation as the sun b ...

In general. the severe wind of an intense tropical cyclone (hurricane or typhoon). The term has no further technical connotation, but, unfortunately, is easily conftlsed with the strictly defined hurricane-force wind,

A line of equal or constant temperature.

Difference between the instantaneous wind velocity at a point and the mean wind velocity taken over a given time interval. Also called fluctuation velocity.

A basic equation in daytime visual range theory, relating the apparent luminance of a distant black object, the apparent luminance of the background sky above the horizon, and the extinction coefficient of the atmosphere, or the air layer near the ground. ...

Pertaining to rain, or more broadly, to precipitation.

Physical equipment used in data processing. Compare to firmware, software.

The gravity flow of water within soil.

See standard atmosphere.