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Try the next-generation Data Catalog at catalog-beta.data.gov and help shape it with your feedback.

5 datasets found
  • Federal

    AA Index

    National Oceanic and Atmospheric Administration, Department of Commerce —

    The geomagnetic aa index provides a long climatology of global geomagnetic activity using 2 antipodal observatories at Greenwich and Melbourne- IAGA Bulletin 37, 1975...
  • Federal

    AP Index

    National Oceanic and Atmospheric Administration, Department of Commerce —

    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...
  • Federal

    Anuarios de Geomagnetismo - AÑO 2002

    National Oceanic and Atmospheric Administration, Department of Commerce —

    Yearbook for Italian Geomagnetic Observatories
  • Federal

    Bibliography of Historical Geomagnetic Main Field Surveys

    National Oceanic and Atmospheric Administration, Department of Commerce —

    Bibliography of Historical Geomagnetic Main Field Surveys as reference source
  • Federal

    AM Index

    National Oceanic and Atmospheric Administration, Department of Commerce —

    Geomagnetic Range index using data from multiple observatories - Mayaud 1948
5 datasets found

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