Solar Indices

For Sites & Services, see Geophysical Indices

• Activity: Observed
  • Graphical Comparison of Solar Cycles 21, 22 and 23 (DX-LC)
  • Solar Cycles 21, 22 and 23 (DX-LC)
  • Solar Region Data (with Sunspots) (IPS)
  • Sunspot Number and "aa" Index (1868-1992) (NOAA/NGDC)
• Activity: Predicted
  • Solar Activity Prediction Methods(Schatten, NASA/GSFC)
  • Latest Predicted Solar Data (1997-2007) (Schatten, NASA/GSFC)
  • Solar Cycle 23 Project: Summary of Panel Findings (NOAA/SEL)
• Indices: Ca II
  • Big Bear Ca II K-Line Index (BBSO)
  • Lyman alpha from Ca II K-line (BBSO)
• Indices: Mg II
  • SBUV/2 Solar Page
  • UARS/SOLSTICE (LASP)
  • UARS/SUSIM (NRL)
    • Detailed Description [ftp]
• Indices: Etc
  • Coronal Index (Fe XIV) of Solar Activity (ftp) (NOAA/NGDC)
  • Indices of Solar Activity (NOAA/NGDC)
  • Magnetic Plage Strength and Sunspot Indices (Mt. Wilson)
  • Chromospheric Index (NRL)
  • Solar 10.7 cm Radio Flux (NRCC/DRAO)
• Particles
  • Solar Proton Events Affecting the Earth Environment (1976-96) (NOAA/SEC)
• Sunspots
  • Royal Greenwich Observatory/USAF/NOAA Sunspot Record (1874-1997) (NASA/MSFC)
  • Sunspot Index Data Center (WDC-C1) [graphics]
  • Sunspot Numbers (NOAA/NGDC) [ftp]
  • Sunspot Numbers (1818-1991) (NASA) [ftp]

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