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Irradiance Observations in Near-UV, Visible and Near Infrared Spectral Bands from Measurements Carried out during ATLAS-1 and EURECA-1 Missions

Published online by Cambridge University Press:  12 April 2016

Gerard Thuillier ,
Michel Herse ,
Dietrich Labs ,
Paul C. Simon ,
Didier Gillotay  and
Holger Mandel
Gerard Thuillier
Affiliation:
Service d’Aeronomie du CNRS, BP3, F91371 Verrieres le Buisson, France
Michel Herse
Affiliation:
Service d’Aeronomie du CNRS, BP3, F91371 Verrieres le Buisson, France
Dietrich Labs
Affiliation:
Landessternwarte, Königstul, D-69117 Heidelberg 1, Germany
Paul C. Simon
Affiliation:
Institut d’Aeronomie Spatiale de Belgique, 3 avenue Circulaire B-1180 Bruxelles, Belgium
Didier Gillotay
Affiliation:
Institut d’Aeronomie Spatiale de Belgique, 3 avenue Circulaire B-1180 Bruxelles, Belgium
Holger Mandel
Affiliation:
Landessternwarte, Königstul, D-69117 Heidelberg 1, Germany

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For the ATLAS and EURECA missions, we have used two identical instruments to measure the absolute solar spectral irradiance from 180 to 3200 nm. These instruments are calibrated by use of a blackbody and a set of lamp standards. The measurements are carried out with 1 nm bandpass up to 800 nm and 20 nm above. The instruments and calibration procedures are described by Thuillier et al. (1981). The platform capability of instruments retrieval after measurements allows a post-flight calibration which is essential for accurate measurements. The main results obtained up to now are:

- In the UV, the ATLAS-1 and EURECA-1 solar spectral irradiance are consistent with the SpaceLab 1 data obtained in 1983 (Labs et al. 1987). Figure 1 shows the ATLAS 1 and SL 1 spectra. The origin of the existing differences is presently under investigation.

- In the visible domain, our measurements agree with the solar spectrum from Neckel & Labs (1984) within a few percent difference at certain wavelength.

- In the IR domain, the preliminary processing shows a spectrum close to the one obtained by Thekaekara (1974).

Type
Observational Programs for Solar and Stellar Irradiance Variability
Information
International Astronomical Union Colloquium , Volume 143: The Sun as a Variable Star: Solar and Stellar Irradiance Variations , 1994 , pp. 70 - 71
Copyright
Copyright © Kluwer 1994

References

Labs, D., Neckel, H., Simon, P. & Thuillier, G. 1987 Ultraviolet solar irradiance measurement from 200 to 358 nm during the SpaceLab 1 mission. Solar Phys. 107, 203–219.CrossRefGoogle Scholar
Neckel, H. & Labs, D. 1984 The solar radiation between 3300 and 12500 Å. Solar Phys. 90, 205–258.CrossRefGoogle Scholar
Thekaekara, M.P. 1974 Extraterrestrial solar spectrum, 3000-6100 Å at 1 Å intervals Appl. Opt. 13, 518–521.CrossRefGoogle Scholar
Thuillier, G., Simon, P.C., Labs, D., Pastiels, R. & Neckel, H. 1981 An instrument to measure the solar spectrum from 170 to 3200 nm. Solar Phys. 74, 531–537.CrossRefGoogle Scholar