The change in the measured transducer output caused by changes in ambient temperature. Usually expressed a percentage of full scale.

A unit measure of electrical conduction. The facility with which a substance conducts electricity, as represented by the current density per unit electrical-potential gradient in the direction of flow. Electrical conductivity is the reciprocal of electric ...

Frequency Shift Keying. A form of frequency modulation of a data signal performed by a modem for transmission over dedicated wire or phone lines.

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

The difference between the air temperature and the dew-point. Also called dew-point deficit, dew-point depression.

A systematic summary of the terms (inflow, outflow, and storage) of the storage equation as applied to the computation of soil-moisture changes, ground-water changes, etc. An evaluation of the hydrologic balance of an area. Also called basin accounting, w ...

Phase Shift Keying. A form of phase modulation of a data signal performed by a modem for transmission over dedicated wire or phone lines.

An Instrument used to determine dew point.

The record obtained from a bolometer.

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

Same as altimeter setting.

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

A radiosonde whose carrier wave is switched on and off in such a manner that the interval of time between the transmission of signals if a function of the magnitude of the meteorological elements being measured.

A type of pressure-plate anemometer in which the plate, restrained by a stiff spring, is held perpendicular to the wind. The wind-activated motion of the plate is measured electrically. The natural frequency of this system can be made high enough so that ...

See calorie.

The value of atmospheric pressure to which the scale of a pressure altimeter is set so as to indicate airport elevation. The altimeter setting is included as part of an aviation weather observation.

An instrument, located at the surface observing station, which is used to record the data presented by a radiosonde aloft.

The maximum distance, usually horizontally, at which a given object or light source is just visible under particular conditions of transmittance and background luminance.

The total of all deviations of a transducer's output from a specified straight line in a constant environment.

The total amount of water transferred to the atmosphere by evapotranspiration.