Flare Irradiance Spectral Model (FISM) The Flare Irradiance Spectral Model (FISM) is an empirical model of the solar irradiance spectrum from 0.1 to 190 nm at 1 nm resolution and on a 1-minute time cadence. This model is based on the data provided by the Solar Extreme ultraviolet Experiment (SEE) on the Thermosphere Ionosphere Mesosphere Energetics and Dynamics (TIMED) satellite and the Solar Stellar Irradiance Comparison Experiment (SOLSTICE) on the Upper Atmospheric Research Satellite (UARS). The goal of FISM is to provide accurate solar spectral irradiances over the vacuum ultraviolet range (VUV) as input for ionospheric and thermospheric models used for space weather research and operations. 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 extreme ultraviolet wavelengths (EUV: 10-120 nm), as well as the solar cycle and solar rotational variations. The FISM is shown to model the solar cycle and solar rotational variations to within 7% in the VUV wavelengths as well as describe the changes in irradiance due to solar flares to within 15% at most VUV wavelengths. The FISM therefore provides the most accurately available values of the VUV irradiance at this high of temporal resolution and with 100% coverage at this resolution from 1986 to the present. FISM 1-minute resolution data for the 154.5 nm bin during the X17 flare on October 28, 2003 FISM daily average data for the integrated 0.1-193 nm VUV band over 6 solar cycles from 1947-Present FISM Data NOTE: view FISM Readme file for data interpretation Daily Data Merged Data (.sav file) One file per day, searchable by year: 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976 1975 1974 1973 1972 1971 NOTE: For data prior to 1970, please use the merged data file Flare Data One file per day, searchable by year: 2007 2006 2005 2004 2003 2002 2001 2000 1999 FISM Data plot utility - launch FISM Documentation FISM Readme file - (.txt) FISM References: Chamberlin, P. C., T. N. Woods, and F. G. Eparvier, Flare Irradiance Spectral Model (FISM): Flare component algorithms and results, Space Weather, 6, S05001, doi:10.1029/2007SW000372, 2008. Chamberlin, P. C., T. N. Woods, and F. G. Eparvier, Flare Irradiance Spectral Model (FISM): Daily component algorithms and results, Space Weather, 5, S07005, doi:10.1029/2007SW000316, 2007. Additional FISM Papers: Peterson, W. K., T. N. Woods, P. C. Chamberlin, and P. G. Richards, Photoelectron flux variations observed from the FAST satellite, Adv. Space Res., in press, doi:10.1016/j.asar.2007.08.038, 2007. Woods, T. N., G. Kopp, and P. C. Chamberlin, Contributions of the Solar Ultraviolet Irradiance to the Total Solar Irradiance During Large Flares, J. Geophys. Res., 111, A10S14, doi: 10.1029/2005JA011507, 2006.
Flare Irradiance Spectral Model (FISM)
The Flare Irradiance Spectral Model (FISM) is an empirical model of the solar irradiance spectrum from 0.1 to 190 nm at 1 nm resolution and on a 1-minute time cadence. This model is based on the data provided by the Solar Extreme ultraviolet Experiment (SEE) on the Thermosphere Ionosphere Mesosphere Energetics and Dynamics (TIMED) satellite and the Solar Stellar Irradiance Comparison Experiment (SOLSTICE) on the Upper Atmospheric Research Satellite (UARS). The goal of FISM is to provide accurate solar spectral irradiances over the vacuum ultraviolet range (VUV) as input for ionospheric and thermospheric models used for space weather research and operations. 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 extreme ultraviolet wavelengths (EUV: 10-120 nm), as well as the solar cycle and solar rotational variations. The FISM is shown to model the solar cycle and solar rotational variations to within 7% in the VUV wavelengths as well as describe the changes in irradiance due to solar flares to within 15% at most VUV wavelengths. The FISM therefore provides the most accurately available values of the VUV irradiance at this high of temporal resolution and with 100% coverage at this resolution from 1986 to the present.
FISM Data NOTE: view FISM Readme file for data interpretation
FISM Documentation
FISM References:
Additional FISM Papers:
