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One Minute Geomagnetic Data

Global geomagnetic observatory data available from NGDC and the co-located World Data Center in Boulder, CO include 1-minute, hourly, and annual mean values.


Graph of 1-minute geomagnetic data from Belsk Observatory

Selected digital datasets are available via our FTP server. Most of the digital data are also available for browse and download via NGDC's Space Physics Interactive Data Resource (SPIDR).

You can also browse the catalog (download via ftp) of minute and hourly data available in non-digital form. Data are available on various magnetic media (Tape, Disk, custom CD-ROM etc.) These may be ordered by contacting NGDC directly.

The image to the left shows SPIDR's data visualization of 1-minute data from the Belsk magnetic observatory preceding and during the magnetic storm of October 2003.
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