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.

Same as atmometer.

An instrument used for the measurement of the reflecting, power (the albedo) of a surface. A pyranometer adapted for the measurement of radiation reflected from the earth's surface is sometimes employed as an albedometer.

Radiation with wavelengths greater than 4 microns. (In meteorology, same as infrared radiation.)

Precipitation caused by the ascent of moist air over an orographic barrier such as a Mountain range.

Not a linear function of the relevant variables.

A unit of pressure used principally in oceanography. One decibar (10' dynes/cm2) equals 0.1 bar. In the ocean, hydrostatic pressure in decibars very nearly equals the corresponding depth in meters.

Determined by weighing a special type of wooden stick that has been exposed in the woods, its weight being proportional to its contained water.

modulated radiosonde-A radiosonde which transmits the indications of the meteorological sensing elements in the form of pulses spaced in time. The meteorological data are evaluated from the intervals between the pulses. Also called timeinterval radiosonde ...

Same as aneroid barometer. Holostelic means wholly made of solids, while aneroid means devoid of liquid.

Sustained winds greater than or equal to 40 mph or gust greater than or equal to 58 mph.

The height ascribed to the lowest layer of clouds or obscuring phenomena when it is reported as broken, overcast, or obscuration and not classified as "thin" or "partial." The ceiling is termed unlimited when these conditions are not satisfied. ...

The process by which one object becomes adhered to another by the binding action of ice.

An instrument which automatically records the voltage applied to it, as a function of time.

A method of winds aloft observation essentially the same as a pilot balloon observation except the height data is derived from the radiosonde observation rather than from assumed ascension rates.

Line drawn through geographical points recording equal amounts of precipitation during a given time period or for a particular storm.

An inert gas. A colorless, monatomic element which is found to occur in dry air to the extent of only 0.000524 percent by volume. Helium is very light, having a molecular weight of only 4.003 and specific gravity referred to air of 0.138. Because helium i ...

The part of a measuring instrument which responds directly to changes in the environment.

General name for an instrument which measures the earth's magnetic field intensity.

The quantity to be measured (or modulated, or detected, or operated upon) which is received by an instrument. Thus, for a thermometer. temperature is the input quantity.