The rules for the data use and exchange are defined by WDS Data Policy.
When the data are used in publications and presentations, the users must acknowledge the data suppliers and the WDC for Geomagnetism, Kyoto.

Commercial use and re-distribution of WDC data are, in general, not allowed. Please ask for the information of each observatory to the WDC.

Indices   (Three versions of AE/Dst indices)

1. Dst index / Real-time (quicklook) Dst index in this month
2. AE index / Real-time (quicklook) AE index in this month
3. Plot and download of Dst and AE (Hourly Values) indices [Since 1957]
4. Plot and download of ASY/SYM [since 1981] and AE [since 1975] indices
5. Kp index [Since 1932] (with ap and Ap)
6. The quietest and most disturbed days [Since 1932]

Geomagnetic Field Data at the Observatories

• Quick look
  1. Real-time (Quicklook) Geomagnetic Field Data Page
  2. Mineyama (in Japan) quicklook magnetogram (1 second value) (Map)
  3. Real-time geostational satellite data (JAXA/ETS-8)
     [Link to a page in JAXA Space Environments & Effects System]


• Archive
  1. Digital Data
     Geomagnetic hourly [Since 1844], 1 minute [Since 1970] and 1 second [Since 1978] values
  2. Analogue record image [Since 1899]
     Normal-run Magnetogram (Geomagnetism), Rapid-run Magnetogram (Geomagnetism), Rapid-run Tellurigram (Earth current)


• Annual Means
  [Link to a page in BGS, U.K.]

Geomagnetic Field Model

• International Geomagnetic Reference Field (IGRF)
  1. Model field at a point by IGRF
  2. Transformation of Coordinate   [Geographic <-> Geomagnetic (Dipole)]
  3. Magnetic North, Geomagnetic and Magnetic Poles

Miscellaneous

• Online Catalogue for Archieved Data [Status of Data Collection]
• Geomagnetic field observation and Collection of the data (Geomagnetic observatories on the Google Earth)
• Publication List
• Ionospheric conductivity model
  1. Ionospheric conductivity (Height profile)
  2. Global ionospheric conductivity model