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Title:
Detection of Solar Rotational Variability in the Large Yield RAdiometer (LYRA) 190 - 222 nm Spectral Band
Authors:
Shapiro, A. V.; Shapiro, A. I.; Dominique, M.; Dammasch, I. E.; Wehrli, C.; Rozanov, E.; Schmutz, W.
Affiliation:
AA(Physikalisch-Meteorologishes Observatorium Davos, World Radiation Center; Institute for Atmospheric and Climate Science ETH), AB(Physikalisch-Meteorologishes Observatorium Davos, World Radiation Center), AC(Royal Observatory of Belgium), AD(Royal Observatory of Belgium), AE(Physikalisch-Meteorologishes Observatorium Davos, World Radiation Center), AF(Physikalisch-Meteorologishes Observatorium Davos, World Radiation Center; Institute for Atmospheric and Climate Science ETH), AG(Physikalisch-Meteorologishes Observatorium Davos, World Radiation Center)
Publication:
Solar Physics, Volume 286, Issue 1, pp.289-301 (SoPh Homepage)
Publication Date:
08/2013
Origin:
SPRINGER
Abstract Copyright:
(c) 2013: Springer Science+Business Media B.V.
DOI:
10.1007/s11207-012-0029-2
Bibliographic Code:
2013SoPh..286..289S

Abstract

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 - 222 nm) 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).
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