Temperature corrections for the VIZ and VAISALA radiosondes

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Description

The NWS VIZ radiosonde and the Vaisala RS-80 radiosondes are used worldwide to obtain upper air measurements of atmospheric temperature and moisture. The temperature measured by each sensor is not equal to the atmospheric temperature due to solar and infrared irradiation of the sensor, heat conduction to the sensor from its attachment points, and radiation emitted by the sensor. Presently, only the RS-80 radiosonde applies corrections to the sensor temperature to compensate for these heating sources, and this correction is only considered to be a function of solar angle and pressure. Temperature correction models VIZCOR (VIZ sonde) and VAICOR (Vaisala ... continued below

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37 p.

Creation Information

Luers, J.K. & Eskridge, R.E. January 1, 1994.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 16 times . More information about this report can be viewed below.

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Description

The NWS VIZ radiosonde and the Vaisala RS-80 radiosondes are used worldwide to obtain upper air measurements of atmospheric temperature and moisture. The temperature measured by each sensor is not equal to the atmospheric temperature due to solar and infrared irradiation of the sensor, heat conduction to the sensor from its attachment points, and radiation emitted by the sensor. Presently, only the RS-80 radiosonde applies corrections to the sensor temperature to compensate for these heating sources, and this correction is only considered to be a function of solar angle and pressure. Temperature correction models VIZCOR (VIZ sonde) and VAICOR (Vaisala RS-80 sonde) have been developed that derive the atmospheric temperature from the sensor temperature, taking into account all significant environmental processes that influence the heat transfer to the sensor. These models have been validated by comparing their corrected profiles with atmospheric temperature profiles derived from the NASA multi-thermistor radiosonde. All three radiosondes were flown on the same balloon during the PREFRS radiosonde intercomparison. Excellent agreement has been found between all profiles up to an altitude of 30 km. Since the significant error sources in the VIZCOR, VAICOR and multi-thermistor techniques are largely independent, agreement between all profiles, implies the corrected sensor profiles are providing an unbiased estimate of the true atmospheric temperature.

Physical Description

37 p.

Notes

OSTI as DE98001132

Source

  • Other Information: PBD: Jan 1994

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  • Other: DE98001132
  • Report No.: DOE/ER/61011--T3
  • Grant Number: AI05-90ER61011
  • DOI: 10.2172/548868 | External Link
  • Office of Scientific & Technical Information Report Number: 548868
  • Archival Resource Key: ark:/67531/metadc698087

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Creation Date

  • January 1, 1994

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • Aug. 4, 2016, 7:07 p.m.

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Luers, J.K. & Eskridge, R.E. Temperature corrections for the VIZ and VAISALA radiosondes, report, January 1, 1994; United States. (digital.library.unt.edu/ark:/67531/metadc698087/: accessed August 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.