AP Index

Description

Planetary Amplitude index - Bartels 1951. The a-index ranges from 0 to 400 and represents a K-value converted to a linear scale in gammas (nanoTeslas)--a scale that measures equivalent disturbance am- plitude of a station at which K=9 has a lower limit of 400 gammas.

Resources

Name Format Description Link
0 The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords

Tags

  • nesdis
  • solid earth geophysics
  • national geophysical data center
  • noaa
  • u.s. department of commerce
  • doc/noaa/nesdis/ngdc
  • doc/noaa/nesdis/ncei
  • space physics
  • climatology
  • geomagnetism
  • national centers for environmental information

Topics

Categories