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International Geomagnetic Reference Field - 11th Generation

browse graphicIAGA Division V-MOD Header
The eleventh generation of the International Geomagnetic Reference Field (IGRF) was adopted in December 2009 by the International Association of Geomagnetism and Aeronomy Working Group V-MOD. It updates the previous IGRF generation with a definitive main field model for epoch 2005.0, a main field model for epoch 2010.0, and a linear predictive secular variation meodel for 2010.0-2015.0.
Cite as: International Association of Geomagnetism and Aeronomy (2010): International Geomagnetic Reference Field - 11th Generation. National Geophysical Data Center, NOAA. doi:10.7289/V58050JN [access date]
Download Data
Distribution Formats
  • Geomag 7.0 for Windows (Version: 7)
    • File Specification: Geomag-7 contains coefficent files and the software to manipulate it on a Windows machine.
  • Geomag 7.0 for Linux (Version: 7)
    • File Specification: Geomag-7 contains coefficent files and the software to manipulate it on a Linux machine.
  • IGRF-11 Fortran Source Code (Version: 1)
    • File Specification: Fortran program with IGRF-11 coefficients integrated into the source code.
  • IGRF-11 Coeffiecients as Text (Version: 1)
    • File Specification: Text format of the IGRF-11 coefficients.
  • IGRF-11 Coeffiecients as Excel Spreadsheet (Version: 1)
    • File Specification: Excel spreadsheet format of the IGRF-11 coefficients.
Distributor NCEI Geomagnetic Modeling Team
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
geomag.models@noaa.gov
Dataset Point of Contact NCEI Geomagnetic Modeling Team
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
geomag.models@noaa.gov
Time Period: 1900-01-01 to 2014-12-31
Spatial Reference System: urn:ogc:def:crs:EPSG::4326
Spatial Bounding Box Coordinates:
N: 90
S: -90
E: 180
W: -180
Documentation links not available.
Date(s)
  • publication: 2010-09-03
Edition: 11
Data Presentation Form: mapDigital
Dataset Progress Status Complete
Data Update Frequency: As needed - This model is updated by IAGA every 5 years
Purpose: Purpose statement not available
Dataset Citation Cite as: International Association of Geomagnetism and Aeronomy (2010): International Geomagnetic Reference Field - 11th Generation. National Geophysical Data Center, NOAA. doi:10.7289/V58050JN [access date]
Originator(s)
  • International Association of Geomagnetism and Aeronomy (IAGA)
Distributor(s)
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Point(s) of Contact
  • Manoj Nair
    DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Publisher(s)
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
Theme keywords Global Change Master Directory (GCMD) Science Keywords
  • EARTH SCIENCE > Solid Earth > Geomagnetism > Magnetic Field
  • EARTH SCIENCE > Solid Earth > Geomagnetism > Magnetic Intensity
  • EARTH SCIENCE > Solid Earth > Geomagnetism > Magnetic Declination
  • EARTH SCIENCE > Solid Earth > Geomagnetism > Magnetic Inclination
  • EARTH SCIENCE > Solid Earth > Geomagnetism > Reference Fields
Data Center keywords Global Change Master Directory (GCMD) Data Center Keywords
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
Place keywords Global Change Master Directory (GCMD) Location Keywords
  • Geographic Region > Global
Use Constraints
  • Cite as: International Association of Geomagnetism and Aeronomy (2010): International Geomagnetic Reference Field - 11th Generation. National Geophysical Data Center, NOAA. doi:10.7289/V58050JN [access date]
Access Constraints
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
Fees
  • None
Lineage information for: repository
Processing Steps
  • 2015-04-22T00:00:00 - NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
Lineage information for: dataset
Processor
  • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
Processing Steps
  • Seven teams from the IAGA V-MOD group created independent candidate models for the IGRF-11. The models used the same datasets from satellites and land observatories with different criteria, filters, and processing steps. The various candidate models and their descriptions can be found at https://www.ngdc.noaa.gov/IAGA/vmod/candidatemodels.html
  • The seven models were tested, evaluated, and compared by C.C. Finlay et al. The final model was calculated using weighted means of the candidates. The weights were agreed by a vote of the IGRF-11 task force.
Source Datasets
  • CHAMP Satellite Data
  • ORSTED Satellite Data
  • INTERMAGNET Observatory Data
Last Modified: 2015-08-31
For questions about the information on this page, please email: Brian.Meyer@noaa.gov