Abstract
The study of the minor constituents of the planetary atmospheres from the analysis of the scattered light properties requires the knowledge of the absolute incident solar irradiance at high resolution. The data were obtained from the UVSP experiment on board the Solar Maximum Mission satellite in the 184.5–232.5 nm spectral range. We have reconstituted the solar spectrum measured in three different regions of the solar disk with a spectral resolution of 0.01 nm and a spatial resolution of 3 arc sec. The wavelength scale was determined with a standard deviation of 0.0025 nm. The comparison of the relative intensities in three locations of the solar disk with those obtained by other authors allowed us to determine these positions accurately and to derive the integrated spectrum of the whole disk. Finally, the resulting spectrum has been expressed in absolute units using the spectral irradiance by the SOLSPEC and SUSIM spectrometers, respectively operated with the ATLAS 1 mission and from the Upper Atmosphere Research Satellite. We obtained the absolute solar irradiance with an accuracy of 10% in the 184.5–232.5 nm spectral range with a spectral resolution of 0.01 nm for the first time using data from space observations.
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Tartag, A., Bénilan, Y., Samain, D. et al. High-spectral-resolution solar irradiance in the 184.5 to 232.5 nm range from the SOLSPEC and UVSP spectrometers. Sol Phys 201, 253–269 (2001). https://doi.org/10.1023/A:1017976515168
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DOI: https://doi.org/10.1023/A:1017976515168