Geomagnetic Models
Current Models
Model |
Description |
Source |
Date |
|
The High Definition Geomagnetic Model (HDGM) is a global, high resolution model (degree 720) of the Earth's geomagnetic main and crustal field, providing magnetic field values (total field, dip, and declination) at any point above or below the Earth's surface. An optional addition to HDGM is the HDGM-RT, which includes a model of Earth's magnetosphere which provides near real-time estimates of the external disturbance field due to the solar wind. It also contains a magnetic field model of the daily variations due to the ionospheric current systems. |
Core +Magnetosphere +Ionosphere +Crust |
2022-11 |
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The Dedicated Ionospheric Field Inversion (DIFI) model is a Swarm-based, global model of the Sq and equatorial electrojet magnetic fields at mid and low-latitudes. It describes variations with local time, season and solar flux and separates primary and induced magnetic fields. |
Ionosphere |
2022-10 |
|
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The International Geomagnetic Reference Field (IRGF) is a model describing the core field from 1900 to 2020. The latest version was produced by an international team of scientists, including several from our team, under the auspices of the International Association of Geomagnetism and Aeronomy (IAGA). |
Core |
2019-12 |
|
|
The current World Magnetic Model (WMM2020) is a degree and order 12 core field model based on satellite observations and forecasting the field until Dec 31, 2024. |
Core |
2019-12 |
|
|
The Boulder Magnetic Model of the Earth, beta release |
Core |
2019-09 |
|
|
The Enhanced Magnetic Model (EMM) is a degree and order 720 internal field model, resolving magnetic anomalies down to 56 km wavelength. |
Core +Crust |
2017-07 |
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Earth Magnetic Anomaly Grid: 2 arc-minute resolution (EMAG2) is a grid of crustal anomalies reported in two ways, a consistent 4km upward continued grid, and an anomaly altitude at sea level above oceanic regions and 4km above continental regions. |
Crust |
2017-05 |
|
|
The Potsdam Magnetic Model of the Earth (POMME) is a research model that describes both the internal and the external (magnetospheric) fields, taking into account the variability of space weather. |
Core +External +Crust |
2016-04 |
|
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CHAMP satellite based model of Earth's crustal magnetic anomaly resolved to degree 133, wavelengths of 300km. |
Crust |
2010-08 |
|
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The NGDC-720 model provides a description of the crustal field from ellipsoidal harmonic degree 16 to 719, corresponding to the waveband of 2500 km to 56 km. |
Crust |
2010-03 |
|
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The Equatorial Electric Field Model (EEFM) is a satellite based EEF model at 108km altitude as a function of longitude, local-time, season, solar flux, and lunar local-time. |
Ionosphere |
2009-09 |
|
|
The Prompt Penetration Equatorial Electric Field Model (PPEEFM) describes how the electric field in the equatorial ionosphere varies as a response to solar wind fluctuations. |
Ionosphere |
2009-09 |
|
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The Equatorial Electrojet Model (EEJM) is a satellite derived model of the EEJ magnetic signature as a function of longitude, local-time, season, solar flux, and lunar local-time. |
Ionosphere |
2009-06 |
|
|
The JULIA (Jicamarca Unattended Long-term Investigations of the Ionosphere and Atmosphere) Vertical Drift Model (JVDM) models vertical plasma drifts at analtitude of 150km, 20 degrees above and below the magnetic equator. |
Ionosphere |
2008-10 |
|
|
The gufm1 model describes the magnetic field at the core–mantle boundary for the interval 1590–1990. |
Core |
2000-03 |
 |
= | External Link to NOAA's National Centers for Environmental Information (NCEI) |
Previous Models
Model |
Source
|
Date |
| HDGM2022-RT |
Core + Magnetosphere + Ionosphere +Crust |
2021-11 |
|
Ionosphere |
2021-10
|
|
|
Core + Magnetosphere + Ionosphere +Crust |
2020-11 |
|
|
Ionosphere |
2020-11 |
|
|
Core + Magnetosphere + Ionosphere +Crust |
2019-11 |
|
|
Core |
2019-02 |
|
|
Core + Magnetosphere + Ionosphere +Crust |
2018-11 |
|
|
Ionosphere |
2018-04 |
|
|
Core |
2014-12 |
|
|
Core |
2014-12 |
|
|
Core + Magnetosphere + Ionosphere +Crust |
2017-12 |
|
|
Ionosphere |
2017-05 |
|
|
Core + Magnetosphere + Ionosphere + Crust |
2017-04 |
|
|
Ionosphere |
2016-05 |
|
|
Core + Crust + Magnetosphere |
2015-04 |
|
|
Core + Crust + Magnetosphere |
2013-05 |
|
|
Core + Crust + Magnetosphere |
2012-02 |
|
|
Core + Crust + Magnetosphere |
2009-10 |
|
|
Core + Crust + Magnetosphere |
2009-05 |
|
|
Crust |
2009-03 |
|
|
Crust |
2007-12 |
|
|
Core + Crust + Magnetosphere |
2007-06 |
|
|
External |
2007-05 |
|
|
Crust |
2007-01 |
|
|
Crust |
2006-09 |
|
|
Core + Crust + Magnetosphere |
2006-01 |
|
|
Core + Crust + Magnetosphere |
|
|
|
Crust |
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