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Values of Kp Indices, Ap Indices, Cp Indices, C9 Indices, Sunspot Number, and 10.7 cm Flux

This data file consists of Kp indices, Ap indices, Cp indices, C9 indices, sunspot number, and 10.7 cm flux. The most often requested parameter of this file are the Kp indices. These planetary indices are derived from the K indices ( a quasi-logarithmic three-hourly measure of magnetic activity ranging from 0 for the least disturbed periods to 9 for the most disturbed) from 12 observatories located between 46 degrees north geomagneticlatitude and 63 degrees
south geomagnetic latitude.
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Dataset No POCs available for this dataset
Documentation links not available.
  • publication: 1957-01-01
Edition: First
Dataset Progress Status Under development
Data Update Frequency: Monthly
Purpose: Magnetic Activity Research
Use Limitations
  • While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data.
  • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
Time Period: 1932-01-01 to Present
Spatial Bounding Box Coordinates:
N: 46.00
S: -63.00
E: 180.00
W: -180.00
Theme keywords NASA/GCMD Earth Science Keywords
  • Earth Science > Solid Earth > Geomagnetism > Geomagnetic Indices
  • Earth Science > Sun-Earth Interactions > Ionosphere/Magnetosphere Dynamics > Geomagnetic Indices
  • Earth Science > Sun-Earth Interactions > Solar Activity > Sunspots
Place keywords NASA/GCMD Location Keywords
  • Global
      Use Constraints
      • Use Constraints: None
      Access Constraints
      • Access Constraints: No Constraints
      • Data is free online
      Lineage information for: dataset
      Processing Steps
      • The NOAA National Centers for Environmental Information (formerly National Geophysical Data Center) adds the adjusted 10.7 cm flux to the Indices provided to complete the dataset.
      Last Modified: 2015-09-18
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