Solar-ISS, a new solar reference spectrum covering the far UV to the infrared (165 to 3088 nm) based on reanalyzed SOLAR/SOLSPEC cycle 24 operations

Luc Damé 1 Mustapha Meftah 2 Abdanour Irbah 2 Alain Hauchecorne 2 Slimane Bekki 2 David Boisée 3 Nuno Pereira 3 Dominique Sluse 3 Gaël Cessateur 3
1 HEPPI - LATMOS
LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales
2 STRATO - LATMOS
LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales
Abstract : Since April 5, 2008 and until February 15, 2017, the SOLSPEC (SOLar SPECtrometer) spectro-radiometer of the SOLAR facility on the International Space Station performed accurate measurements of Solar Spectral Irradiance (SSI) from the far ultraviolet to the infrared (165 nm to 3088 nm). These measurements, unique by their large spectral coverage and long time range, are of primary importance for a better understanding of solar physics and of the impact of solar variability on climate (via Earth’s atmospheric photochemistry), noticeably through the "top-down" mechanism amplifying ultraviolet (UV) solar forcing effects on the climate (UV affects stratospheric dynamics and temperatures, altering interplanetary waves and weather patterns both poleward and downward to the lower stratosphere and troposphere regions). SOLAR/SOLSPEC, with almost 9 years of observations covering the essential of the unusual solar cycle 24 from minimum in 2008 to maximum, allowed to establish new reference solar spectra from UV to IR (165 to 3088 nm) at minimum (beginning of mission) and maximum of activity. The complete reanalysis was possible thanks to revised engineering corrections, improved calibrations and advanced procedures to account for thermal, aging and pointing corrections. The high quality and sensitivity of SOLSPEC data allow to follow temporal variability in UV but also in visible along the cycle. Uncertainties on these measurements are evaluated and results, absolute reference spectra and variability, are compared with other measurements (WHI, ATLAS-3, SCIAMACHY, SORCE/SOLSTICE, SORCE/SIM) and models (SATIRE-S, NRLSSI, NESSY)
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Submitted on : Friday, January 5, 2018 - 3:26:28 PM
Last modification on : Wednesday, May 15, 2019 - 3:38:45 AM

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  • HAL Id : insu-01676392, version 1

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Luc Damé, Mustapha Meftah, Abdanour Irbah, Alain Hauchecorne, Slimane Bekki, et al.. Solar-ISS, a new solar reference spectrum covering the far UV to the infrared (165 to 3088 nm) based on reanalyzed SOLAR/SOLSPEC cycle 24 operations. AGU 2017 Fall Meeting, Dec 2017, New Orleans, United States. ⟨insu-01676392⟩

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