BGS provide a range of geomagnetic data and services. Magnetic observatory and survey results, local and global activity indices and forecasts are all available. You can calculate your own magnetic field values from a variety of global and local magnetic field models, view charts produced from these models and access other navigational information. We describe some of the applications the data and models help support. Expert services and impartial advice can be provided to clients in the UK and around the world.
BGS Observatory Data and Monthly Bulletins
Magnetic Indices
(K, aa, Ap)
Global Annual Mean Observatory Data
Global Repeat Survey Data
Grid Magnetic Angle calculator for Great Britain
World Magnetic Model (WMM) - Calculator and Charts
BGS Global Geomagnetic Model (BGGM) - Download
International Geomagnetic Reference Field (IGRF) - Calculator
Geomagnetic Coordinate Calculator
Solar and Geomagnetic Data and Forecasts
Geomagnetic Pulsations
Geo-electric Field Measurements
Geomagnetic Storm Forecasts
BGS Global Geomagnetic Model (BGGM)
In-Field Referencing (IFR)
Interpolation In-Field Referencing (IIFR)