National Geophysical Data Center (NGDC), NOAA Satellite and Information Service

Back to Collection NOAA/NESDIS/NGDC/STP/Geomag
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Intermagnet definitive observatory data

1 minute and hourly values reported as definitive from Intermagnet observatories.

Cite this dataset when used as a source.

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Distribution Formats
  • IAGA02
Distributor Distributor information not available
No point of contact available for this dataset
Documentation links not available.
  • Intermagnet on behalf of individual worldwide geomagnetic observatories
    Publisher information not available.
  • publication: 2010-09-21
Dataset Progress Status Under development
Data Update Frequency: Annually
Supplemental Information: Values are in IAGA02 format. An updated format for definitive Intermagnet data designed to handle 1 second data is planned.
Purpose: Maintain a comprehensive archive of Intermagnet data.
Use Limitations
  • NCEI provides long term archive for definitive Intermagnet data.
Time Period: 1991-01-01  to  2007-12-31
Spatial Bounding Box Coordinates:
N: 90
S: -90
E: 180
W: -180
Spatial Coverage Map:
  • Earth Science > Solid Earth > Geomagnetism
  • Earth Science > Solid Earth > Geomagnetism > Magnetic Field
Use Constraints
  • Use Constraints: none
Access Constraints
  • Access Constraints: none
  • none
Lineage Statement Lineage statement not available.
  • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
Processing Steps
  • hourly values and minute value are as reported by observatory. minute values are delivered as properly formated IAGA02 files and hourly values are extraced from Intermagnet binary files using software provided by Intermagnet.

Metadata Last Modified: 2015-09-18

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