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Detection of Solar Rotational Variability in the Large Yield RAdiometer (LYRA) 190 - 222 nm Spectral Band

Shapiro, A. ; Dominique, M. ; Dammasch, I. ; Wehrli, C. ; Rozanov, E. ; Schmutz, W.

In: Solar Physics, 2013, vol. 286, no. 1, p. 289-301

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    Titre
    • Detection of Solar Rotational Variability in the Large Yield RAdiometer (LYRA) 190 - 222 nm Spectral Band
    Auteur
    • Shapiro, A.. Physikalisch-Meteorologishes Observatorium Davos, World Radiation Center, 7260, Davos Dorf, Switzerland
    • Dominique, M.. Royal Observatory of Belgium, Ringlaan 3, 1180, Brussels, Belgium
    • Dammasch, I.. Royal Observatory of Belgium, Ringlaan 3, 1180, Brussels, Belgium
    • Wehrli, C.. Physikalisch-Meteorologishes Observatorium Davos, World Radiation Center, 7260, Davos Dorf, Switzerland
    • Rozanov, E.. Physikalisch-Meteorologishes Observatorium Davos, World Radiation Center, 7260, Davos Dorf, Switzerland
    • Schmutz, W.. Physikalisch-Meteorologishes Observatorium Davos, World Radiation Center, 7260, Davos Dorf, Switzerland
    Type de document
    • Postprint
    Classification
    • Technologie, Sciences de l'ingénieur
    Identifiant OAI-PMH
    • oai:doc.rero.ch:316643
    Summary
    We analyze the variability of the spectral solar irradiance during the period from 7 January 2010 until 20 January 2010 as measured by the Herzberg channel (190 - 222nm) of the Large Yield RAdiometer (LYRA) onboard PROBA2. In this period of time, observations by the LYRA nominal unit experienced degradation and the signal produced by the Herzberg channel frequently jumped from one level to another. Both factors significantly complicate the analysis. We present the algorithm that allowed us to extract the solar variability from the LYRA data and compare the results with SORCE/SOLSTICE measurements and with modeling based on the Code for the Solar Irradiance (COSI)