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Model of the core field, related to SW_CFW_SHA_2Y

Series of core field models provided in terms of Gauss coefficients + covariance matrices + standard deviations of Gauss coefficients. Related to SW_CFW_SHA_2Y


• Core field Gauss coefficients stored in the .shc file

• The standard deviations of Gauss coefficients are stored in the .std file

• The covariance matrices are stored in the .cov file

The product consists in three files


MCO_SHA_2Y shc and std file

The format used has been set in accordance with the usual SHC format defined for this type of files. Units of Gauss coefficients are nT

With a very similar format the standard deviations of the Gauss coefficients are provided in an independent file with the extension *.std

The only difference in the format is on the first line where the B-spline order, and the number of intervals between spline knots, are not indicated. Units of standard deviations are nT.


MCO_SHA_2Ycov file

In this independent file with the extension *.cov, the covariance matrice upper triangles (i.e. variances and covariances) is provided.

A covariance matrice being symmetric no information is lost.

The format of the file is:

• On the first line the series of dates (in decimal years) of the mean snapshot core field models associated with the covariance matrices.

• On the next lines are indicated: the row index of the covariance matrix, the column index of the covariance matrix, followed by the time series of variances or covariances in the order given by the first line dates. Units of matrix elements are nT2.

Simple

Date (Révision)
2023-01-01
Identificateur
SW_MCO_SHA_2Y

Etat
Mise à jour continue
Distributeur
  ESA ESA ESA - ( )
Point de contact
  IPGP IPGP IPGP -
Fréquence de mise à jour
Annuelle
FormaTerre | Platform ontology
  • Swarm
FormaTerre | Distributor
  • IPGP
FormaTerre | Solid Earth Discipline ontology
  • Géomagnétisme
Type de représentation spatiale
Tabulaire
Langue de la ressource

eng

Encodage des caractères
Utf8
Catégorie ISO
  • Sciences de la terre, géosciences
N
S
E
W


Date de début
1999-01-01
Nom du système de référence
WGS 1984
Format (encodage)
  • ASCII ( )

  • SHC ( )

  ESA -
Ressource en ligne
Product repository ( WWW:LINK-1.0-http--link )
Ressource en ligne
ESA product page ( WWW:LINK-1.0-http--link )
Ressource en ligne
FTP Repository ( WWW:DOWNLOAD-1.0-ftp--download )
Ressource en ligne
Ropp, G., Lesur, V., Baerenzung, J., and Holschneider, M. (2020) ( WWW:LINK-1.0-http--related )

Ropp, G., Lesur, V., Baerenzung, J., and Holschneider, M. (2020), Sequential modelling of the Earth’s core magnetic field, Earth, Planets and Space, 72(1) :153, doi :10.1186/s40623-020- 01230-1

Ressource en ligne
G Ropp, Vincent Lesur (2023) ( WWW:LINK-1.0-http--related )

G Ropp, Vincent Lesur. Mid-latitude and equatorial core surface flow variations derived from observatory and satellite magnetic data. Geophysical Journal International, 2023, 73 (1), pp.190.

10.1093/gji/ggad113. hal-04033876

Niveau
Jeu de données

Etendue

No information provided.
Généralités sur la provenance

Input data: Derived from Swarm Level 1b MAGX_LR_1B, the Oersted, Champ, CryoSat data and the Magnetic Observatories data

Identifiant de la fiche
71edb6f4-ea34-4e14-8b7b-304cee327037 XML
Langue
Français
Jeu de caractères
Utf8
Type de ressource
Collection de données
Date des métadonnées
2024-05-10T10:10:01
Nom du standard de métadonnées

ISO 19115:2003/19139

Version du standard de métadonnées

1.0

Point de contact
  FormaTerre - ( )
 
 

Aperçus

Logo Swarm mission

Étendue spatiale

N
S
E
W


Mots clés


Fourni par

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Ressources associées

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