The Swarm Initial Field Model for the 2014 geomagnetic field - INSU - Institut national des sciences de l'Univers Access content directly
Journal Articles Geophysical Research Letters Year : 2015

The Swarm Initial Field Model for the 2014 geomagnetic field

Abstract

Data from the first year of ESA's Swarm constellation mission are used to derive the Swarm Initial Field Model (SIFM), a new model of the Earth's magnetic field and its time variation. In addition to the conventional magnetic field observations provided by each of the three Swarm satellites, explicit advantage is taken of the constellation aspect by including east-west magnetic intensity gradient information from the lower satellite pair. Along-track differences in magnetic intensity provide further information concerning the north-south gradient. The SIFM static field shows excellent agreement (up to at least degree 60) with recent field models derived from CHAMP data, providing an initial validation of the quality of the Swarm magnetic measurements. Use of gradient data improves the determination of both the static field and its secular variation, with the mean misfit for east-west intensity differences between the lower satellite pair being only 0.12 nT.
Fichier principal
Vignette du fichier
Olsen_et_al-2015-Geophysical_Research_Letters.pdf (2.87 Mo) Télécharger le fichier
Origin : Publisher files allowed on an open archive
Loading...

Dates and versions

insu-01405271 , version 1 (29-11-2016)

Identifiers

Cite

Nils Olsen, Gauthier C Hulot, Vincent Lesur, Christopher C Finlay, Ciaran C Beggan, et al.. The Swarm Initial Field Model for the 2014 geomagnetic field. Geophysical Research Letters, 2015, 42 (4), pp.1092-1098. ⟨10.1002/2014GL062659⟩. ⟨insu-01405271⟩
66 View
118 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More