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J/other/SoPh/291.3527    SOLAR/SOLSPEC UV SSI from 2008-2015    (Meftah+, 2016)

Solar irradiance from 165 to 400nm in 2008 and UV variations in three spectral bands during Solar Cycle 24. Meftah M., Bolsee D., Dame L., Hauchecorne A., Pereira N., Irbah A., Bekki S., Cessateur G., Foujols T., Thieblemont R. <Solar Physics, 291, 3527-3547 (2016)> =2016SoPh..291.3527M (SIMBAD/NED BibCode)
ADC_Keywords: Sun ; Spectra, ultraviolet Keywords: Solar irradiance; Solar cycle; Instrumentation and data management; Instrumental effects Abstract: Accurate measurements of the solar spectral irradiance (SSI) and its temporal variations are of primary interest to better understand solar mechanisms, and the links between solar variability and Earth's atmosphere and climate. The SOLar SPECtrum (SOLSPEC) instrument of the Solar Monitoring Observatory (SOLAR) payload onboard the International Space Station (ISS) has been built to carry out SSI measurements from 165 to 3088nm. We focus here on the ultraviolet (UV) part of the measured solar spectrum (wavelengths less than 400 nm) because the UV part is potentially important for understanding the solar forcing of Earth's atmosphere and climate. We present here SOLAR/SOLSPEC UV data obtained since 2008, and their variations in three spectral bands during Solar Cycle 24. They are compared with previously reported UV measurements and model reconstructions, and differences are discussed. Description: The SOLar SPECtrum (SOLSPEC) instrument of the Solar Monitoring Observatory (SOLAR) was exposed to sunlight for the first time on April 5, 2008. The duration to record a solar spectrum (165-3088nm) is less than 17 minutes. Between April 2008 and May 2016, more than 700 solar spectra were acquired. The present article is dedicated to the UV portion (165-400nm) of the solar spectrum and its temporal variations during Solar Cycle 24. Measurements from two separated double-spectrometers of SOLAR/SOLSPEC ('UV' and 'VIS') are combined. From these data, we obtained the UV solar spectrum above Earth's atmosphere at a distance of one astronomical unit (initial values for studying the UV solar variability). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file spectrum.dat 24 618 SOLAR/SOLSPEC UV spectrum for the 2008 minimum (April 2008)
See also: J/A+A/600/A21 : Sun UV spectrum (06/06/2008-26/04/2009) (Bolsee+, 2017) J/ApJ/789/117 : Solar spectral irradiance (Marchenko+, 2014) J/ApJS/213/11 : UV spectrum of the quiet Sun above the limb (Warren+, 2014) J/ApJS/181/351 : Solar flux model in 30-1300nm wavelength range (Killen+, 2009) J/A+AS/126/281 : Solar disk spectrum (660-1175A) (Curdt+ 1997) J/A+AS/113/237 : Ultraviolet Spectrum of the Sun (Samain, 1995) J/ApJS/91/461 : EUV spectrum of solar active region (Thomas+, 1994) Byte-by-byte Description of file (# headlines): spectrum.dat
Bytes Format Units Label Explanations
1- 7 F7.3 nm lambda [165.8/400.5] Wavelength 17- 24 F8.3 mW/m2/nm Irr [0.4/1718.4] Spectral irradiance of the Sun from 165 to 400nm
History: Spectrum sent by the author. Acknowledgements: Mustapha Meftah [CNRS, LATMOS] at
(End) Emmanuelle Perret [CDS] 11-May-2017
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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