Journal
EARTH PLANETS AND SPACE
Volume 72, Issue 1, Pages -Publisher
SPRINGER
DOI: 10.1186/s40623-020-01254-7
Keywords
The geomagnetic field; Geomagnetic secular variation; Geomagnetic field models; Forecasts of the geomagnetic field
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Funding
- ESA project 3D-Earth
- Centre National des Etudes Spatiales (CNES)
- CNES project Exploitation des mesures de la mission Swarm
- Programme National de Planetologie of Institut national des sciences de l'Univers
- CNES over the project Indices d'Activite Magnetique : Meteorologie de l'Espace et Geomagnetisme Spatial
- CNES
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Observations of the geomagnetic field taken at Earth's surface and at satellite altitude are combined to construct continuous models of the geomagnetic field and its secular variation from 1957 to 2020. From these parent models, we derive candidate main field models for the epochs 2015 and 2020 to the 13th generation of the International Geomagnetic Reference Field (IGRF). The secular variation candidate model for the period 2020-2025 is derived from a forecast of the secular variation in 2022.5, which results from a multi-variate singular spectrum analysis of the secular variation from 1957 to 2020.
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