J/A+A/645/A2ivo://CDS.VizieR/J/A+A/645/A2doi:10.26093/cds/vizier.36450002CDSMeftah M.Snow M.Dame L.Bolsee D.Pereira N.Cessateur G.Bekki S.,Keckhut P.Sarkissian A.Hauchecorne A.2021-09-06T08:09:29Z2021-01-06T13:18:14ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frthe-sunspectroscopyultraviolet-astronomySolar spectral irradiance (SSI) is the wavelength-dependent energy input to the top of the Earth's atmosphere. Solar ultraviolet (UV) irradiance represents the primary forcing mechanism for the photochemistry, heating, and dynamics of the Earth's atmosphere. Hence, both temporal and spectral variations in solar UV irradiance represent crucial inputs to the modeling and understanding of the behavior of the Earth's atmosphere. Therefore, measuring the long-term solar UV irradiance variations over the 11-year solar activity cycle (and over longer timescales) is fundamental. Thus, each new solar spectral irradiance dataset based on long-term observations represents a major interest and can be used for further investigations of the long-term trend of solar activity and the construction of a homogeneous solar spectral irradiance record. The main objective of this article is to present a new solar spectral irradiance database (SOLAR-v) with the associated uncertainties. This dataset is based on solar UV irradiance observations (165-300nm) of the SOLAR/SOLSPEC space-based instrument, which provides measurements of the full-disk SSI during solar cycle 24. SOLAR/SOLSPEC made solar acquisitions between April 5, 2008 and February 10, 2017. During this period, the instrument was affected by the harsh space environment that introduces instrumental trends (degradation) in the SSI measurements. A new method based on an adaptation of the Multiple Same-Irradiance-Level (MuSIL) technique was used to separate solar variability and any uncorrected instrumental trends in the SOLAR/SOLSPEC UV irradiance measurements. A new method for correcting degradation has been applied to the SOLAR/SOLSPEC UV irradiance records to provide new solar cycle variability results during solar cycle 24. Irradiances are reported at a mean solar distance of 1 astronomical unit (AU). In the 165-242nm spectral region, the SOLAR/SOLSPEC data agrees with the observations (SORCE/SOLSTICE) and models (SATIRE-S, NRLSSI 2) to within the 1-sigma error envelope. Between 242 and 300nm, SOLAR/SOLSPEC agrees only with the models.2021A&A...645A...2Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/645/A2CatalogResearchIsServedByTAP VizieR generic servicerelated-toVI/152 : SOVAP-PICARD total solar irradiance (Meftah+, 2016)J/A+A/531/A6 : Evolution of solar irradiance during Holocene (Vieira+, 2011)J/A+A/581/A26 : Solar Lyman irradiance line profiles (Lemaire+, 2015)J/ApJ/789/117 : Solar spectral irradiance (Marchenko+, 2014)J/A+A/611/A1 : SOLAR/SOLSPEC Spectral Irradiance - 0.5-3000nm (Meftah+, 2018)J/A+A/624/A36 : EUV irradiances of the quiet Sun (Del Zanna, 2019)J/other/SoPh/291.3527 : SOLAR/SOLSPEC UV SSI from 2008-2015 (Meftah+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/645/A2https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/645/A2http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/645/A2https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/645/A2https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/645/A2http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/645/A2GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapUVdefaultJ/A+A/645/A2/dataSOLAR/SOLSPEC solar spectral irradiance during Solar Cycle 24recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObsObservation datestime.epoch;obsnullableindexedblambdaWavelength bin lower boundnmem.wl;stat.minfloatBlambdaWavelength bin upper boundnmem.wl;stat.maxfloatSSISpectral solar irradianceW.m**-2.nm**-1spect.indexdoublee_SSIIrradiance uncertainty (unitless, 1 sigma)stat.errordouble