Solar Physics

, Volume 180, Issue 1–2, pp 397–407 | Cite as

Flare Index of Solar Cycle 22

  • Tamar Ataç
  • Atila Özgüç


A brief description and final results of the flare index (FI) of solar activity are given. The calculation of the daily flare index of cycle 22 was determined using the final grouped solar flare files from National Geophysical Data Center A. The final data of FI are presented in graphical form over cycle 22. Daily calculated values are available for general use in Kandilli Observatory's and NGDC's anonymous ftp servers. The pattern of similar activity indices that arise under different physical conditions during cycle 22 are compared with the flare index. The north – south asymmetry in the daily flare index data was studied.


Physical Condition Flare Solar Activity Solar Cycle Activity Index 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Kluwer Academic Publishers 1998

Authors and Affiliations

  • Tamar Ataç
    • 1
  • Atila Özgüç
    • 1
  1. 1.Kandilli Observatory and Earthquake Research Institute, Boğaziçi University, ÇengelköyIstanbulTurkey

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