HR: 1330h
AN: SA23A-12    [Abstracts]
TI: First Results from the Flare Irradiance Spectral Model (FISM): a Model of Solar Vacuum Ultraviolet Irradiance Over Time Scales from Flares to Solar Cycles
AU: * Chamberlin, P C
EM: phil.chamberlin@lasp.colorado.edu
AF: University of Colorado/Laboratory for Atmospheric and Space Physics, 1234 Innovation Dr, Boulder, CO 80303 United States
AU: Woods, T N
EM: tom.woods@lasp.colorado.edu
AF: University of Colorado/Laboratory for Atmospheric and Space Physics, 1234 Innovation Dr, Boulder, CO 80303 United States
AU: Eparvier, F G
EM: eparvier@colorado.edu
AF: University of Colorado/Laboratory for Atmospheric and Space Physics, 1234 Innovation Dr, Boulder, CO 80303 United States
AB: The Flare Irradiance Spectral Model (FISM) is an empirical model of the solar irradiance spectrum from 0.1 to 195 nm at 1nm resolution and on a 1-minute time cadence. The goal of FISM is to provide accurate solar spectral irradiances over the vacuum ultraviolet (VUV: 0-200 nm) range as input for ionospheric and thermospheric models that are used for space weather research and operations. The FISM is based on the solar VUV irradiance measurements by the TIMED Solar EUV Experiment (SEE) and uses as proxies the solar EUV images from the SOHO EUV Imaging Telescope (EIT) and the solar X-ray irradiances from the GOES X-Ray Sensor (XRS). The FISM accounts for the significant irradiance changes due to solar flares, which includes orders of magnitude increases in the X-rays to factors of two increases in the EUV, as well as the solar cycle and solar rotational variations. The first results from FISM will be discussed, as well as the future improvements that are planned for the model.
DE: 7519 Flares
DE: 7537 Solar and stellar variability
DE: 7538 Solar irradiance
DE: 7549 Ultraviolet emissions
SC: SPA-Aeronomy [SA]
MN: 2005 Joint Assembly