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Proceedings Paper

Stratospheric ozone and nitrogen dioxide amount obtained with GASCOD-type DOAS spectrometer at Terra Nova Bay Station (Antarctica) during December 2000 - January 2001
Author(s): Daniele Bortoli; Fabrizio Ravegnani; Ivan K. Kostadinov; Giorgio Giovanelli; Andrea Petritoli
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Paper Abstract

GASCODs are UV-Visible ground-based spectrometers developed at the ISAO Institute and used to detect stratospheric trace gases involved in the ozone cycle such as NO2, OClO, BrO, by application of Differential Optical Absorption Spectroscopy (DOAS) methodology to the zenith scattered light collected data. After several tests both in laboratory and in Antarctic region, one of the spectrometers was modified for unattended and continuous measurement in extreme high-latitude environment. The instrument was installed in December 1995 in the Italian Station at Terra Nova Bay (74 degree(s)26'S, 164 degree(s)03E', Ross Sea). The GASCOD is still working and causing very interesting data for the study of the denitrification processes during the formation of the so-called ozone hole over the Antarctic region. When the station is unmanned, to allow for the continuous NO2 monitoring for whole the year without mechanical problems, the fixed [407 - 460] nm spectral region is investigated. The results for Nitrogen Dioxide, obtained by application of DOAS algorithms to the data recorded during the year 2000, are presented. During a leg (December 2000 - January 2001) of the 16th Italian Antarctic Expedition, after the usual instrument check, many measurements were carried out in other spectral regions, with the aim to obtain information about the stratospheric tracers contents. The results obtained for Ozone, Nitrogen dioxide and Formaldehyde at different Solar Zenith Angle are presented.

Paper Details

Date Published: 30 January 2002
PDF: 11 pages
Proc. SPIE 4485, Optical Spectroscopic Techniques, Remote Sensing, and Instrumentation for Atmospheric and Space Research IV, (30 January 2002); doi: 10.1117/12.454255
Show Author Affiliations
Daniele Bortoli, ISAO-CNR and Univ. de Evora (Italy)
Fabrizio Ravegnani, ISAO-CNR (Italy)
Ivan K. Kostadinov, ISAO-CNR and Solar Terrestrial Influences Lab. (Italy)
Giorgio Giovanelli, ISAO-CNR (Italy)
Andrea Petritoli, ISAO-CNR (Italy)

Published in SPIE Proceedings Vol. 4485:
Optical Spectroscopic Techniques, Remote Sensing, and Instrumentation for Atmospheric and Space Research IV
Allen M. Larar; Martin G. Mlynczak, Editor(s)

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