HDGM2018 and HDGM2018-RT

The High Definition Geomagnetic Model 2018 (HDGM2018) is a global, high-resolution model (degree 720) of the Earth's geomagnetic main and crustal fields, providing magnetic field values (total field, dip, and declination) at any point above or below the Earth's surface for the year 2018. An optional extension to the HDGM is the HDGM-RT, which provides near real-time estimates of the external disturbance field caused by the solar wind and includes a magnetic field model for daily variations due to ionospheric current systems.

WMM2015v1

The World Magnetic Model 2015 (WMM2015), version 1, is a core field model with degree and order 12, based on satellite observations, and forecasting the geomagnetic field through December 31, 2019. The WMM is the standard model used for navigation, attitude, and heading referencing systems that rely on the geomagnetic field.

IGRF-12

The International Geomagnetic Reference Field (IGRF), 12th generation, is a model that describes the core field from 1900 to 2020. It was developed by an international team of scientists, under the auspices of the International Association of Geomagnetism and Aeronomy (IAGA).

HDGM2019 and HDGM2019-RT

The High Definition Geomagnetic Model 2019 (HDGM2019) is a global, high-resolution model (degree 720) of the Earth's geomagnetic main and crustal fields, providing magnetic field values (total field, dip, and declination) at any point above or below the Earth's surface for the year 2019. An optional extension to the HDGM is the HDGM-RT, which provides near real-time estimates of the external disturbance field caused by the solar wind and includes a magnetic field model for daily variations due to ionospheric current systems.

WMM2015v2

The World Magnetic Model 2015 (WMM2015), version 2, is a core field model with degree and order 12, based on satellite observations, and forecasting the geomagnetic field through December 31, 2019. The WMM is the standard model used for navigation, attitude, and heading referencing systems that rely on the geomagnetic field.

HDGM2020 and HDGM2020-RT

The High Definition Geomagnetic Model 2020 (HDGM2020) is a global, high-resolution model (degree 720) of the Earth's geomagnetic main and crustal fields, providing magnetic field values (total field, dip, and declination) at any point above or below the Earth's surface for the year 2020. An optional extension to the HDGM is the HDGM-RT, which provides near real-time estimates of the external disturbance field caused by the solar wind and includes a magnetic field model for daily variations due to ionospheric current systems.

HDGM2021 and HDGM2021-RT

The High Definition Geomagnetic Model 2021 (HDGM2021) is a global, high-resolution model (degree 790) of the Earth's geomagnetic main and crustal fields, providing magnetic field values (total field, dip, and declination) at any point above or below the Earth's surface for the year 2021. An optional extension to the HDGM is the HDGM-RT, which provides near real-time estimates of the external disturbance field caused by the solar wind and includes a magnetic field model for daily variations due to ionospheric current systems.