In general. the severe wind of an intense tropical cyclone (hurricane or typhoon). The term has no further technical connotation, but, unfortunately, is easily conftlsed with the strictly defined hurricane-force wind,

See Koschmieder's law.

A conductor or system of conductors for radiating and/or receiving radio energy. Also called aerial.

Same as photometer.

Same as geostrophic wind level.

A temperature scale based on absolute zero. Same as Kelvin temperature scale.

Barometer in which pressure is determined by balancing air pressure against the weight of a column of mercury in an evacuated glass tube.

An instrument used to determine atmospheric pressure or elevation by observing the boiling point of water or both liquids. The sensitivity of the hypsometer increases with decreasing pressure, making it more useful for high altitude work.

A unit of energy per unit area commonly employed in radiation theory. Equal to one gram-calorie per square centimeter.

Same as wave pole.

See radar theodolite, radio direction-finder.

A method of winds aloft observation in which the elevation and azimuth angles of a theodolite are read while visually tracking a pilot balloon. Balloon height data is estimated from assumed balloon ascension rates.

A thermograph in which ventilation is provided by a suction fan.

meter-An instrument for measuring the transmissivity of the atmosphere; a type of transmissometer. It consists of a constant- intensity collimated light source located at a suitable distance from a photoelectric cell. Variation in the turbidity of the atm ...

A mercury-in-glass thermometer which records the temperature upon being inverted and retains its reading until being returned to the first position.

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

Winds from the four cardinal points of the compass; that is, north, east, south, and west winds.

The maximum rate at which precipitation can pass through the surface into the soil, for a given soil in a given condition.

Wind with a speed between 28 and 55 knots (32 and 63 mph); Beaufort scale numbers 7 through 10.

Any and all forms of water particles, liquid or solid, that fall from the atmosphere and reach the ground.