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  The Kalmag model as a candidate for IGRF-13

Baerenzung, J., Holschneider, M., Wicht, J., Lesur, V., & Sanchez, S. (2020). The Kalmag model as a candidate for IGRF-13. Earth, Planets, and Space, 72(1): 163. doi:10.1186/s40623-020-01295-y.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0007-852C-2 Version Permalink: https://hdl.handle.net/21.11116/0000-0007-852D-1
Genre: Journal Article

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 Creators:
Baerenzung, Julien, Author
Holschneider, Matthias, Author
Wicht, Johannes1, Author           
Lesur, Vincent, Author
Sanchez, Sabrina1, Author           
Affiliations:
1Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832288              

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 Abstract: We present a new model of the geomagnetic field spanning the last 20 years and called Kalmag. Deriving from the assimilation of CHAMP and Swarm vector field measurements, it separates the different contributions to the observable field through parameterized prior covariance matrices. To make the inverse problem numerically feasible, it has been sequentialized in time through the combination of a Kalman filter and a smoothing algorithm. The model provides reliable estimates of past, present and future mean fields and associated uncertainties. The version presented here is an update of our IGRF candidates; the amount of assimilated data has been doubled and the considered time window has been extended from [2000.5, 2019.74] to [2000.5, 2020.33].

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Language(s): eng - English
 Dates: 2020
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1186/s40623-020-01295-y
 Degree: -

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Title: Earth, Planets, and Space
Source Genre: Journal
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Publ. Info: Tokyo, Japan : Published for the Society of Geomagnetism and Earth, Planetary, and Space Sciences (SGEPSS), the Seismological Society of Japan, the Volcanological Society of Japan, the Geodetic Society of Japan, the Japanese Society for Planetary Sciences by Terra Scien
Pages: - Volume / Issue: 72 (1) Sequence Number: 163 Start / End Page: - Identifier: ISSN: 1343-8832
CoNE: https://pure.mpg.de/cone/journals/resource/954926946761