A type of upper-air observation that determines the wind speed, direction, pressure, temperature, and relative humidity by utilizing a radiosonde tracked by a radio direction-finding device such as a radio theodolite. For more information on Rawinsondes follow this link to http://www.atirus.com/wwa_text3.html, also the NOAA's Site.
a radiosonde whose three dimensional position is measured as a function of time
a simpler device intended for measuring wind speeds only
An upper-air weather observation system (from the surface to approximately 30 km altitude) made by balloon-borne instrument package ( radiosonde) that provides direct measurement of ambient air temperature, pressure, and humidity as well as the evaluation of the wind speed and direction aloft by means of tracking the position change of the radiosonde by directional radio techniques.
A method of upper air observation consisting of an evaluation of the wind speed and direction, temperature, pressure, and humidity aloft by means of a balloon-borne radiosonde tracked by radar or a radio theodolite.
A type of upper-air observation for determining the wind speed and direction, pressure, temperature, and relative humidity aloft by means of a balloon-borne radiosonde tracked by a radar, a radio direction-finder, or by NAVAID.
a balloon that is tracked by radar to measure wind speeds and wind directions in the atmosphere.
An upper-air sounding that includes determination of wind speeds and directions. Historically, wind data were obtained by tracking a balloon-borne radiosonde with a radio direction finder. Contemporary methods include measuring position or radiosonde velocity from GPS or Loran radio navigation signals.
radiosonde which is tracked by radar or radio-theodolite to measure the wind aloft.
An upper air observation that evaluates the winds, temperature, relative humidity, and pressure aloft by means of a balloon-attached radiosonde that is tracked by a radar or radio direction-finder. It is a radiosonde observation combined with a winds-aloft observation, called a rawin.