NOAA’s National Centers for Environmental Information (NCEI) and the University of Colorado Boulder’s Cooperative Institute for Research In Environmental Science (CIRES) have released the upgraded High Definition Geomagnetic Model (HDGM) for 2026.  A global, high-resolution model of Earth’s geomagnetic field, the HDGM provides magnetic field values (total field, dip, and declination) at any point above...Read More