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Proceedings Paper

Optical balloon hygrometer for upper-troposphere and stratosphere water vapor measurements
Author(s): Vladimir Yushkov; Valery Astakhov; Serafim Merkulov
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Paper Abstract

An optical hygrometer has been upgraded to make night-time measurements of water vapor in the upper troposphere and stratosphere using the technique of photofragment fluorescence. Hygrometer uses the fluorescence at wavelength near 310 nm of excited OH molecules produced in the photodissociation of water molecules by UV radiation with hydrogen lamp. A coaxial optical scheme and photon counting mode are used. A compact hydrogen lamp is aligned along the axis of the instrument, inside the annular fast focusing optics. It provides the effective convergence of fluorescence from a large angle and thus increase the sensitivity of this method. Total weight of the optical hygrometer is about 2 kg. It can be easily integrated with the Vaisala RS-80 radiosonde. This allows to obtain reliable real-time data on temperature, pressure and water vapor concentration in the upper troposphere and stratosphere and conduct the validation of the remote sensing data.

Paper Details

Date Published: 18 August 1998
PDF: 7 pages
Proc. SPIE 3501, Optical Remote Sensing of the Atmosphere and Clouds, (18 August 1998); doi: 10.1117/12.317759
Show Author Affiliations
Vladimir Yushkov, Central Aerological Observatory (Russia)
Valery Astakhov, Central Aerological Observatory (Russia)
Serafim Merkulov, Central Aerological Observatory (Russia)

Published in SPIE Proceedings Vol. 3501:
Optical Remote Sensing of the Atmosphere and Clouds
Jinxue Wang; Beiying Wu; Toshihiro Ogawa; Zheng-hua Guan, Editor(s)

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