International Geomagnetic Reference Field

The International Geomagnetic Reference Field (IGRF) is a model that describes the Earth's magnetic field at a specific time. It helps scientists understand variations in the magnetic field strength and direction due to factors like the Earth’s core movements and solar activity. The IGRF is updated regularly, allowing researchers, navigators, and various technologies—including satellites and compasses—to accurately gauge the magnetic environment. Essentially, it acts as a standard reference for studying and navigating the Earth's magnetic field over time and space.