HR: 1330h
AN: SA23A-14    [Abstracts]
TI: The Magnesium II Index at High Spectral and Temporal Resolution
AU: * Snow, M
EM: snow@lasp.colorado.edu
AF: University of Colorado/LASP, 1234 Innovation Dr, Boulder, CO 80303 United States
AU: McClintock, W
AF: University of Colorado/LASP, 1234 Innovation Dr, Boulder, CO 80303 United States
AU: Woods, T
AF: University of Colorado/LASP, 1234 Innovation Dr, Boulder, CO 80303 United States
AU: Rottman, G
AF: University of Colorado/LASP, 1234 Innovation Dr, Boulder, CO 80303 United States
AB: The Magnesium II core-to-wing ratio is a useful proxy for solar EUV irradiance variability. The SOLar-STellar Irradiance Comparison Experiment (SOLSTICE) on the SOLar Radiation and Climate Experiment (SORCE) has a much higher resolving power than the SBUV instruments that produce the standard NOAA Mg II index. It also has the capability of measuring the index on timescales of minutes rather than once per day. The spectral resolution affects the precision of the Mg II index and we will show how this impacts our ability to measure short-timescale changes in the solar irradiance. We will also discuss the role of higher time cadence observations on the accuracy of the index as a measure of solar irradiance variability.
DE: 7507 Chromosphere
DE: 7537 Solar and stellar variability
DE: 7549 Ultraviolet emissions
DE: 7594 Instruments and techniques
SC: SPA-Aeronomy [SA]
MN: 2005 Joint Assembly