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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 (Revision)
2023-01-01
Citation identifier
SW_CFW_SHA_2Y

Status
On going
Distributor
  ESA ESA ESA - ( )
Point of contact
  IPGP IPGP IPGP -
Maintenance and update frequency
Annually
FormaTerre | Platform ontology
  • Swarm
FormaTerre | Distributor
  • IPGP
FormaTerre | Solid Earth Discipline ontology
  • Geomagnetism
Spatial representation type
Text, table
Language

eng

Character set
UTF8
Topic category
  • Geoscientific information
N
S
E
W
thumbnail


Begin date
1999-01-01
Reference system identifier
WGS 1984
Distribution format
  • ASCII ( )

  ESA -
OnLine resource
Product repository ( WWW:LINK-1.0-http--link )
OnLine resource
ESA product page ( WWW:LINK-1.0-http--link )
OnLine resource
FTP Repository ( WWW:DOWNLOAD-1.0-ftp--download )
OnLine resource
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

Hierarchy level
Dataset

Extent

No information provided.
Statement

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

File identifier
e474cebd-9a63-409d-bfd6-0e5a1ddd87d5 XML
Metadata language
Français
Character set
UTF8
Hierarchy level
Series
Date stamp
2024-05-10T10:11:26
Metadata standard name

ISO 19115:2003/19139

Metadata standard version

1.0

Point of contact
  FormaTerre - ( )
 
 

Overviews

overview
Logo Swarm mission

Spatial extent

N
S
E
W
thumbnail


Keywords


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Associated resources

Not available


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