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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 (IAGA). 2010: International Geomagnetic Reference Field - 11th Generation. NOAA National Centers for Environmental Information. https://doi.org/10.7289/V58050JN. Accessed [date].
gov.noaa.ngdc.mgg.geophysical_models:IGRF-11
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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.
Ordering Instructions Contact NCEI for other distribution options and instructions.
Distributor NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Dataset Point of Contact NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Dataset Point of Contact NCEI Geomagnetic Modeling Team
NOAA National Centers for Environmental Information
geomag.models@noaa.gov
Dataset Point of Contact Manoj Nair
NOAA National Centers for Environmental Information
303-497-4642
Manoj.C.Nair@noaa.gov
Time Period 1900-01-01 to 2014-12-31
Spatial Reference System urn:ogc:def:crs:EPSG::4326
Spatial Bounding Box Coordinates
West:-180
East:180
South:-90
North:90
Spatial Coverage Map
General Documentation
Publication Dates
  • publication: 2010-09-03
Edition 11
Data Presentation Form mapDigital
Dataset Progress Status Complete - production of the data has been completed
Historical archive - data has been stored in an offline storage facility
Data Update Frequency As needed - This model is updated by IAGA every 5 years
Purpose This data is available to the public for a wide variety of uses including scientific research and analysis.
Dataset Citation
  • Cite as: International Association of Geomagnetism and Aeronomy (IAGA). 2010: International Geomagnetic Reference Field - 11th Generation. NOAA National Centers for Environmental Information. https://doi.org/10.7289/V58050JN. Accessed [date].
Cited Authors
  • International Association of Geomagnetism and Aeronomy (IAGA)
Publishers
  • NOAA National Centers for Environmental Information
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
  • Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
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.
Other Constraints Cite as: International Association of Geomagnetism and Aeronomy (IAGA). 2010: International Geomagnetic Reference Field - 11th Generation. NOAA National Centers for Environmental Information. https://doi.org/10.7289/V58050JN. Accessed [date].
Fees
  • In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
Lineage information for:dataset
Processor
  • NOAA National Centers for Environmental Information
  • NOAA National Centers for Environmental Information
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
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.
Last Modified: 2020-05-14
For questions about the information on this page, please email:ncei.info@noaa.gov