radiosonde


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radiosonde

(rā`dēōsŏnd), group of instruments for simultaneous measurement and radio transmission of meteorological data, including temperature, pressure, and humidity of the atmosphere. The instrument package is usually carried into the atmosphere by a balloon (see weather balloonweather balloon,
balloon used in the measurement and evaluation of mostly upper atmospheric conditions (see atmosphere). Information may be gathered during the vertical ascent of the balloon through the atmosphere or during its motions once it has reached a predetermined maximum
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); balloon-borne radiosondes reach altitudes as great as 90,000 ft (27,400 m) above the earth's surface. A radiosonde may also be carried by a rocket, in which case it is known as a rocketsonde, or dropped by parachute (usually from an aircraft), in which case it is known as a dropsonde. Instruments included in a radiosonde are typically transducers for humidity, temperature, and pressure measurements; controls to improve return signals and determine which measurements are to be transmitted to data stations; and a radio transmitter. Radar also has been used to measure and transmit meteorological data from a radiosonde. These radiosonde observations are made as often as four times daily at some meteorological stations around the globe.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Radiosonde

 

an aerological instrument that measures the pressure, temperature, and humidity of the air; the values of these meteorological components are then automatically transmitted to earth by radio from various altitudes during the ascent through the atmosphere.

A radiosonde consists of sensing elements, transducers that convert the small changes of the sensing elements into electric values, coding apparatus, and a lightweight shortwave radio transmitter. The radiosonde is lifted by a pilot balloon to an altitude of 30 to 40 km. During the ascent, the radiosonde automatically sends coded signals corresponding to the instrument readings, and the signals are picked up by a radio receiver at the launching site. The operating range is approximately 150 to 200 km. There are balloon-borne radiosondes that can also measure wind velocity and direction.

Radiosondes are used extensively for vertical atmospheric sounding. The first radiosonde was constructed by the Soviet scientist P. A. Molchanov in 1930.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

radiosonde

[′rād·ē·ō‚sänd]
(engineering)
A balloon-borne instrument for the simultaneous measurement and transmission of meteorological data; the instrument consists of transducers for the measurement of pressure, temperature, and humidity, a modulator for the conversion of the output of the transducers to a quantity which controls a property of the radio-frequency signal, a selector switch which determines the sequence in which the parameters are to be transmitted, and a transmitter which generates the radio-frequency carrier.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

radiosonde

A radio transmitter used in conjunction with a balloon. It transmits data on temperature, pressure, and humidity. A radiosonde balloon can attain a height of approximately 65,000 ft (20 km) with small balloons and 115,000 ft (34 km) with large balloons. This balloon is tracked by radar to calculate upper winds. See radarsonde.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved

radiosonde

an airborne instrument to send meteorological information back to earth by radio
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
ARTSE2017 deployed three radiosonde systems and surface sensors around Fort Laramie.
Currently, meteorological observations are conducted by radiosonde, a weather instrument that records meteorological data, typically released into the atmosphere with a weather balloon.
Caption: LEFT: Below the weather balloon is the radiosonde (bottom) and parachute to return the radiosonde to earth after the balloon bursts.
ON the purchase of the radiosonde transmitters with free meteorological balloons, state auditors said that while PAGASA could buy up to one year's supply of weather balloons, the deliveries and payments should be staggered and the inventory would not exceed the 3-month limit at any time during the period.
Meanwhile, the PWV datasets from 45 radiosonde stations in North China are used to analyze the annual and seasonal trends during three different periods (1979-1999, 1979-2007, and 2008-2015) associated with the latest humidity sensors changes that have been taking place in China since about 2007 [35,36].
Upper air data was also recorded from this site from the daily release of radiosondes (weather balloons) which take wind speed and direction measurements (along with other weather parameters).
Generally, historical radiosonde data from certain locations are employed in the calculation of retrieval coefficients by various methods.
The refractivity gradient is estimated from the radiosonde data obtained from South Africa Weather Service (SAWS).
Guo and Ding [12] analyze the change trend of high atmosphere temperature in China from 1958 to 2005 using the radiosonde sounding data of China's 116 sounding stations and find that the high atmosphere temperature below 400 hPa standard barosphere showed a significant upward trend with the amplitude particularly prominent in the high-altitude areas.
Radiosonde measurements in Estonia and Finland are treated by Sirje Keevallik and Miina Krabbi, showing their invaluable role during the periods of volcanic eruptions when meteorological observations from airplanes are impossible.