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

Wind with a speed between 4 and 27 knots (4 and 31 mph); Beaufort scale numbers 2 through 6.

A sunshine recorder of the type in which the time scale is supplied by the motion of the sun. It consists essentially of a spherical lens which bums an image of the sun upon a specialty prepared card.

Small particle on which water vapor condenses.

Water vapor content of the air. See absolute humidity, dew point, mixing ratio, relative humidity, specific humidity.

Particle on which the freezing of water occurs.

An instrument for measuring the intensity of direct solar radiation at normal incidence. See Angstrom compensation pyrheliometer, Eppley pyrheliometer, Michaelson actinograph. silver- disc pyrheliometer, spectropyrheliometer, waterflow pyrheliometer.

Name sometimes used in place of pyranometer as a generic term.

A class of instruments employed to determine the electric potential at a point in the atmosphere, and ultimately the atmospheric electric field.

The point (physical and/or electrical) where two distinct data processing elements meet.

Operation mode of a communication circuit in which each end can simultaneously transmit and receive.

An evaluation of upper air temperature, pressure, and humidity from radio signals received from a balloon- borne radiosonde.

An instrument for measuring temperature by utilizing the variation of the physical properties of substances according to their thermal states. Thermometers may be classified into types according to their construction; deformation thermometer, electrical t ...

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

Any device or instrument for measuring salinity, especially one based on electrical conductivity methods.

In a system of moist air, the dimensionless ratio of the mass of water vapor to the total mass of the system.

The measuring, transmitting, receiving, and indicating apparatus for obtaining the value of a quantity at a distance.

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 ...

Same as dropsonde.

General name for a type of instrument which measures the inclination of the wind to the horizontal plane. See bivane.