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Nicolas Gillet

Researcher at University of Savoy

Publications -  57
Citations -  3623

Nicolas Gillet is an academic researcher from University of Savoy. The author has contributed to research in topics: Earth's magnetic field & Secular variation. The author has an hindex of 24, co-authored 44 publications receiving 2875 citations. Previous affiliations of Nicolas Gillet include University of Grenoble & Centre national de la recherche scientifique.

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International Geomagnetic Reference Field: the 12th generation

TL;DR: The 12th generation of the International Geomagnetic Reference Field (IGRF) was adopted in December 2014 by the Working Group V-MOD appointed by the International Association of Geomagnetism and Aeronomy (IAGA) as discussed by the authors.
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Fast torsional waves and strong magnetic field within the Earth’s core

TL;DR: Numerical geodynamo models with studies of geostrophic motions in the Earth’s core that rely on geomagnetic data reconcile, finding a torsional wave recurring every six years from an ensemble inversion of core flow models.
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Recent geomagnetic secular variation from Swarm and ground observatories as estimated in the CHAOS-6 geomagnetic field model

TL;DR: In this paper, the authors used more than 2 years of magnetic data from the Swarm mission, and monthly means from 160 ground observatories as available in March 2016, to update the CHAOS time-dependent geomagnetic field model.
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International Geomagnetic Reference Field: the thirteenth generation

Patrick Alken, +73 more
TL;DR: The International Geomagnetic Reference Field (IGRF) was adopted by the IGA Division V Working Group (V-MOD) in 2019 as discussed by the authors, which provides the equations defining the IGRF, the spherical harmonic coefficients for this thirteenth generation model, maps of magnetic declination, inclination, and total field intensity for the epoch 2020.0, and maps of their predicted rate of change for the 2020 to 2025.0 time period.
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An Introduction to Data Assimilation and Predictability in Geomagnetism

TL;DR: This article reviews the current status of the knowledge of core dynamics, and elaborate on the reasons which motivate geomagnetic data assimilation studies, including the prospect to propagate the current quality of data backward in time to construct dynamically consistent historical core field and flow models, and the possibility to improve the forecast of the secular variation.