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Solar Electromagnetic Radiation Study for Solar Cycle 22 pp 147–159Cite as

EUV97: Improvements to EUV Irradiance Modeling in the Soft X-Rays and FUV

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Abstract

EUV97 is a solar EUV empirical model that incorporates revised soft X-ray fluxes from the SOLRAD-11 satellite (1976–1979) and uses La recently recalibrated to the UARS satellite (1991 -present) SOLSTICE Lα. The soft X-ray data have been revised from the original flux values using Mewe’s spectral fits to the data. The recalibrated AE-E and SME Lα datasets use UARS Lα for absolute flux values to provide two solar cycles of Lα irradiance extending back to 1977. La is used by EUV97 as a proxy for chromospheric EUV irradiances. The EUV97 empirical solar model takes its heritage from the EUV91 model based on a multiple linear regression technique that fits soft X-ray and EUV irradiances to 10.7 cm flux for transition region and coronal emissions or to Lα and He I 10830 Å EW for chromospheric emissions.

Paper presented at the SOLERS22 International Workshop, held at the National Solar Observatory, Sacramento Peak, Sunspot, New Mexico, U.S.A., June 17–21, 1996.

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Author information

Authors and Affiliations

  1. Telos/JPL, MS 264-723, 4800 Oak Grove Dr., Pasadena, CA, 91109, USA

    W. Kent Tobiska

  2. CIRES, University of Colorado, Campus Box 216, Boulder, CO, 80309, USA

    F. G. Eparvier

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  1. W. Kent Tobiska
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  2. F. G. Eparvier
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Editor information

Editors and Affiliations

  1. Department of Physics and Astronomy, University of California, Los Angeles, USA

    J. M. Pap  & R. K. Ulrich  & 

  2. World Radiation Center — PMOD, Davos-Dorf, Switzerland

    C. Fröhlich

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© 1998 Springer Science+Business Media Dordrecht

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Tobiska, W.K., Eparvier, F.G. (1998). EUV97: Improvements to EUV Irradiance Modeling in the Soft X-Rays and FUV. In: Pap, J.M., Fröhlich, C., Ulrich, R.K. (eds) Solar Electromagnetic Radiation Study for Solar Cycle 22. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5000-2_11

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  • DOI: https://doi.org/10.1007/978-94-011-5000-2_11

  • Publisher Name: Springer, Dordrecht

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