High-resolution spectrometer for atmospheric studies

A high-resolution spectrometer (0.0014 nm at 313 nm) has been developed at the University of L’Aquila (Italy) for atmospheric spectroscopic studies. The layout, optics and software for the instrument control are described. Measurements of the mercury low-pressure lamp lines from 200 to 600 nm show t...

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Bibliographic Details
Published in:Journal of atmospheric and solar-terrestrial physics 2009-08, Vol.71 (12), p.1383-1388
Main Authors: Di Carlo, Piero, Barone, Massimiliano, D’Altorio, Alfonso, Dari-Salisburgo, Cesare, Pietropaolo, Ermanno
Format: Article
Language:English
Subjects:
Atmospheric spectroscopy
Earth, ocean, space
Exact sciences and technology
External geophysics
Fraunhofer lines
Physics of the ionosphere
Physics of the magnetosphere
Remote sensing
Ring effect
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Summary:A high-resolution spectrometer (0.0014 nm at 313 nm) has been developed at the University of L’Aquila (Italy) for atmospheric spectroscopic studies. The layout, optics and software for the instrument control are described. Measurements of the mercury low-pressure lamp lines from 200 to 600 nm show the high performances of the spectrometer. Laboratory measurements of OH and NO 2 spectrums demonstrate that the system could be used for cross-section measurements and to detect these species in the atmosphere. The first atmospheric application of the system was the observation of direct solar and sky spectrums that shows a filling-in of the sky lines due to rotational Raman scattering. The measurements have been done with clear and cloudy sky and in both there was a strong dependence of the filling-in from the solar zenith angle whereas no dependence from the wavelengths was evident at low solar zenith angles (less than 85°).
ISSN:1364-6826
1879-1824
DOI:10.1016/j.jastp.2009.05.012