Source: https://en.wikipedia.org/wiki/International_Geomagnetic_Reference_Field
The term usually present in the associated Legendre functions is omitted in this formulation and is instead accounted for in the Gauss coefficients.
The Gauss coefficients are modelled as a piecewise-linear function of time with a 5-year step size.[2]
Geomagnetic latitude
Magsat
Ørsted (satellite)
CHAMP (satellite)
Swarm (satellites)
^ Jump up to: a b c Thébault, Erwan; Finlay, Christopher C; Beggan, Ciarán D; Alken, Patrick; Aubert, Julien; Barrois, Olivier; Bertrand, Francois; Bondar, Tatiana; Boness, Axel; Brocco, Laura; Canet, Elisabeth; Chambodut, Aude; Chulliat, Arnaud; Coïsson, Pierdavide; Civet, François; Du, Aimin; Fournier, Alexandre; Fratter, Isabelle; Gillet, Nicolas; Hamilton, Brian; Hamoudi, Mohamed; Hulot, Gauthier; Jager, Thomas; Korte, Monika; Kuang, Weijia; Lalanne, Xavier; Langlais, Benoit; Léger, Jean-Michel; Lesur, Vincent; Lowes, Frank J; Macmillan, Susan; Mandea, Mioara; Manoj, Chandrasekharan; Maus, Stefan; Olsen, Nils; Petrov, Valeriy; Ridley, Victoria; Rother, Martin; Sabaka, Terence J; Saturnino, Diana; Schachtschneider, Reyko; Sirol, Olivier; Tangborn, Andrew; Thomson, Alan; Tøffner-Clausen, Lars; Vigneron, Pierre; Wardinski, Ingo; Zvereva, Tatiana (27 May 2015). "International Geomagnetic Reference Field: the 12th generation" (PDF). Earth, Planets and Space. 67 (79). Bibcode:2015EP&S...67...79T. doi:10.1186/s40623-015-0228-9.
^ Jump up to: a b Lowes, F.J. (January 2010). "The International Geomagnetic Reference Field: A "Health" Warning". IAGA working group V-MOD: Geomagnetic Field Modeling. Archived from the original on 2018-06-30.
IGRF Model Description by IAGA
IGRF Health Warning, Errors, and Limitations
Archived URL: https://en.wikipedia.org/wiki/International_Geomagnetic_Reference_Field
�� CONTENT HASHES:
SHA-256: 3a9c65aa31c3b2a48ef469eb970f2ba6ec5bf61108663455ee869efc10d47683
BLAKE2b: 052c893c3d2302c1329b5b3e0e238675d9d7ee74b4503c755a897337d008c982
MD5: dfbfc6cd6f9bc4db581ef013f430b911
�� TITLE HASHES:
SHA-256: 3656ea079e6087a45913fb786d2aa9422e72dc0add423466e3810467bf7b000f
BLAKE2b: 6a2dbfd50c05f9e90ec2bf6bef4e1a5d54cffd5830d9b36c1071c8995863347d
MD5: 8734e3c80dc18d39284ce54a5f81584f
�� INTEGRITY HASHES:
SHA-256: 1e1121d394962e195748f57b4e0663ad74b34242873aa72dd89a4dbcd265f48b
BLAKE2b: d3a0dbe6fe0be89c95d52ca3a9aa0593e58dc29cb1b38061ee1feb9684f79d78
MD5: 5e58fa94a591bf6bae2ad040e7ea78ba
Archived with ArcHive - Client-side cryptographic archival system
