Geomagnetic Data Service
The rules for the data use and exchange are defined by
WDS Data Policy.
The appropriate institution(s) is also supplied with the WDC data sets.
If the data are used in publications and presentations,
the data suppliers
and the WDC for Geomagnetism, Kyoto must properly be acknowledged.
Commercial use and re-distribution of WDC data are, in general, not
Please ask for the information of each observatory to the WDC.
The construction of this database has been supported in part (as
"Solar-Terrestrial Physics Database") by grant 127008, 168069, 178061, 188071, 198053, 208041, 218046, 228040, 238033, and 248032 under the
Japan Society for Promotion of Science (JSPS). We also thank many
geomagnetic observatories, institutions and international organizations which
kindly supply the data to our data center.
On geomagnetic data
- Dst index / Real-time (quicklook) Dst index in this month
- AE index / Real-time (quicklook) AE index in this month
Plot and download of Dst and AE (Hourly Values) indices [Since 1957]
Plot and download of ASY/SYM [since 1981] and AE [since 1975]
- Substorm Swift Search
(Stack plots and digital data of AE/ASY/Wp indices and others) [since 2005]
- Kp index [Since 1932]
(with ap and Ap)
The quietest and most disturbed days [Since 1932]
Geomagnetic Field Data at the Observatories