International Geomagnetic Reference Field - 11th Generation
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title: International Geomagnetic Reference Field - 11th Generation
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date: 2010-09-03
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abstract: 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.
purpose: This data is available to the public for a wide variety of uses including scientific research and analysis.
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individualName: Manoj Nair
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keyword: Earth Science > Solid Earth > Geomagnetism > Magnetic Field
keyword: Earth Science > Solid Earth > Geomagnetism > Magnetic Intensity
keyword: Earth Science > Solid Earth > Geomagnetism > Magnetic Declination
keyword: Earth Science > Solid Earth > Geomagnetism > Magnetic Inclination
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otherConstraints: 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.
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otherConstraints: 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.
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otherConstraints: 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].
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beginPosition: 1900-01-01
endPosition: 2014-12-31
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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.
orderingInstructions: Contact NCEI for other distribution options and instructions.
distributorFormat: (MD_Format)
name: Geomag 7.0 for Windows
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specification: Geomag-7 contains coefficent files and the software to manipulate it on a Windows machine.
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specification: Geomag-7 contains coefficent files and the software to manipulate it on a Linux machine.
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description: 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
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description: 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.
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maintenanceNote: Modified for compliance to NCEI Template v1.2.
