The ratios, to the mean wind speed, of the average magnitudes of the component fluctuations of the wind along three mutually perpendicular axes.

The difference between downward and upward (total) radiation; net flux of all radiation.

A colloquial term in western Australia for a squall, associated with thunder, on the northwest coast in summer.

The value of the quantity measured, as indicated or otherwise provided by a measuring instrument.

The time required for an instrument to register a designated percentage (frequently 90%) of a step change in the variable being measured.

A mercury barometer in which the tube is U-shaped and the upper and lower mercury surfaces have the same diameter.

Same as marine rainbow.

The maximum positive and negative deviation observed in testing a device under specified conditions and by a specified procedure. It is usually measured as an inaccuracy and expressed as accuracy, typically in terms of the measured variable, percent of sp ...

A unit of signaling speed representing the number of code elements sent per second; often, bits per second.

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.

Routine broadcast of meteorological information for aircraft in flight.

A definite portion of a stream channel, commonly taken between two gauging stations, but may be taken between any two specified points.

See hook gauge.

A sounding balloon which, when operationally inflated, resembles an inverted teardrop.

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

A unit of pressure which directly expresses the force exerted by the atmosphere. Equal to 1000 dynes/cm2 or 100 pascals.

A transducer which converts electromagnetic radiation in the infrared, visible, and ultraviolet regions into electrical quantities such as voltage, current, or resistance. Also called photo cell.

A numbering system using a base number of 16 and including the ten decimal digits (0 to 9) along with six alpha digits (A to F). Thus. a digit is available to represent each of the possible values of a 4-bit binary digit.

See evaporative opportunity.

The outer, solid portion of the earth: the crust of the earth.