INTERMAGNET in Support of Space Weather Science and Services

Formed as a result of an IAGA resolution in 1991, INTERMAGNET is a real-time data exchange and publication network for geomagnetic observatories. Today, the network consists of 131 international monitoring stations that meet common standards in data quality and data dissemination.

The operational objective of the network is to provide free access to long-term, absolute magnetic data to meet the evolving needs of the scientific community. In addition to its core database of definitive one-minute observatory values, the INTERMAGNET network has evolved to promote one-second values and near real-time data access, specifically in response to monitoring requirements for space weather research.

The INTERMAGNET web site ( provides a portal to current and historic data in addition to a description of the network, list of participating institutes, documentation on the INTERMAGNET standards and conditions of data use.

Contact Thomson, Alan W.P., Team Leader, British Geological Survey, West Mains Road, Edinburgh EH9 3LA, United Kingdom,