Pertaining to the action or effect of the wind. Derived from the name of the Greek god of the winds, Aeolus.

A recording anemometer.

See hurricane beacon.

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 ...

Force wind-Wind with a speed above 64 knots (73 mph); Beaufort scale numbers 12 through 17.

Cathode Ray Tube. A display element, consisting of a vacuum tube and screen, used with computers.

A unit of heat originally defined as the amount of heat required to raise the temperature of water through one degree centigrade (the gram-calorie or small calorie), but this proved to be insufficiently precise. The 15

Balance of the water resources of a region, comparing precipitation and inflow with outflow, evaporation, and accumulation.

An instrument for recording ocean waves. Most recorders are designed for recording wind waves, that is waves of periods up to about 25 seconds, but some are designed to record waves of longer periods such as tsunamis or tides.

A small, moveable graduated scale adjacent and parallel to the main scale of an instrument. It provides a means for interpolating between the graduations of the main scale.

A class of rain gauge in which the level of the collected rain water is measured by the position of a float resting on the surface of the water.

Any one of six gases, helium, neon, argon, krypton, xenon, and radon, all of whose shells of planetary electrons contain stable numbers of electrons such that the atoms are chemically inactive.

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

An accumulation of granular ice tufts on the windward sides of exposed objects that is formed from supercooled fog or cloud and built out directly against the wind.

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.

check chamber-A chamber use to check the sensing elements of radiosonde equipment.

A graphical representation of stage or discharge at a point on a stream as a function of time.

Lowest altitude in the atmosphere over a given location at which the air temperature is 0

A balloon having a detachable tail which is released when the balloon has undergone a predetermined expansion. It thus serves to measure approximately the density of the atmosphere at the point of release.

Same as altimeter setting.