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Toroidal and poloidal core flow coefficients co-estimated with the magnetic field model MCO_SHA_2Y

This product contains a series of core surface flow models coestimated with the core magnetic field and provided in terms of Toroidal and Poloidal spherical harmonic coefficients + covariance matrices + standard deviations of Gauss coefficients related to SW_MCO_SHA_2Y.


The product consists in three files


CFW_SHA_2Y txt file

The file format is such that any line starting with a ”#” is a comment line. Then on the first (not- commented) line are given the minimum and maximum SH degree used, followed by the number of flow model snapshots.


The second (not-commented) line contains the series of dates (in decimal years) corresponding to the flow snapshot models. On the remaining lines are given successively: a character ”T” or ”P” as an indication if the line is associated with a toroidal or poloidal flow coefficient, the SH degree of the coefficient, its order, and the time series for this coefficient at the dates indicated on the second line.


CFW_SHA_2Y std file

The file format is the same as for the txt file but are given the flow coefficient standard deviations in place of the coefficients


CFW_SHA_2Y cov file

In this independent file with the extension *.cov, the covariance matrice upper triangle (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 flow 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 (km/y)2.

Simple

Date (Révision)
2023-01-01
Identificateur
SW_CFW_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 ( )

  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

Niveau
Jeu de données

Etendue

No information provided.
Généralités sur la provenance

Input data: Co-estimated with MCO_SHA_2Y field model from Swarm Level 1b MAGX_LR_1B, the Oersted, Champ, Cryosat data and the Magnetic Observatories data

Identifiant de la fiche
e474cebd-9a63-409d-bfd6-0e5a1ddd87d5 XML
Langue
Français
Jeu de caractères
Utf8
Type de ressource
Collection de données
Date des métadonnées
2024-05-10T10:11:26
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


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Ressources associées

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