AAS 204th Meeting, June 2004
Session 72 Solar Input to the Heliosphere
SPD Poster, Thursday, June 3, 2004, 9:20am-4:00pm, Ballroom

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[72.07] A Comparison of the Mg II Index Derived from Estimated and Observed Solar Spectra

J. Morrill, C. Korendyke, K. Dere (Naval Research Laboratory)

We have estimated values of the Mg II index using a model of solar spectral irradiance developed at the Naval Research Laboratory. This model uses Ca II K images and spatially resolved sun spot, quiet sun, and active sun spectra measured by the HRTS-9 rocket to generate the estimated spectra. These spectra are compared to observed spectra such as the UARS-SUSIM and UARS-SOLSTICE data sets. In order to further compare the observed and estimated spectra, a Mg II index is derived from these two sets of spectra. In this presentation we will review the details of the model, discuss the methods of deriving the Mg II index, and compare the Mg II variability resulting from the observed and estimated spectra.

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