A term used to describe a sensor (or sensors), the associated transducer(s), and the data readout or recording device.

A recording variometer.

A generic term for any machine that enables a human being to communicate with a computer.

An instrument for measuring the difference between incoming and outgoing terrestrial radiation.

Solar and terrestrial radiation directed downwards (towards the earth's surface); incoming radiation.

A thermometer. the sensitive element of which consists of two metal strips which have different coefficients of expansion and are brazed together. The distortions of the system in response to temperature variations are used as a measure of temperature. It ...

Area of a computer or other device where various logic and control elements are interconnected. Often a printed circuit board into which other circuit boards plug at right angles.

That portion of the record of a microbarograph between any two (or a specified small number) of successive crossings of the average pressure level (in the same direction). Analogous to microseism.

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

Either of two colored luminous spots that appear at points 22

The process by which events in the real world are translated into machine-readable signals.

Same as mirror nephoscope.

The indicating part of an instrument. For example, the hand of a watch or the meniscus of a mercury column.

A cylinder installed in a body of water or an evaporation pan to hold a sensor, such as a float to measure water level or a hook gage. The stillwell is constructed so that there is free movement of water in and out of it, and it therefore provides a repre ...

A pyrheliometer of the bimetallic type used to measure the intensity of direct solar radiation.

The addition of one or more redundant bits to information to verify its accuracy.

A wind vane used to obtain the horizontal and vertical components of the wind.

The general term for dry atmospheric suspensoids, including dust, haze, smoke. and sand. Compare to hydrometeor.

An instrument for measuring the ultraviolet in solar and sky radiation.

A recording pressure-tube anemometer in which the wind scale of the float manometer has been made linear by the use of springs, i.e. Dines anemometer.