Open AccessInternational Geomagnetic Reference Field‐2000
Publication year - 2001
Publication title -
eos, transactions american geophysical union
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.316
H-Index - 86
eISSN - 2324-9250
pISSN - 0096-3941
DOI - 10.1029/01eo00215
Subject(s) - aeronomy , earth's magnetic field , field (mathematics) , geodesy , secular variation , epoch (astronomy) , geology , geography , geophysics , mathematics , computer science , pure mathematics , physics , magnetic field , ionosphere , stars , quantum mechanics , computer vision
A group of geomagnetic field modellers associated with the International Association of Geomagnetism and Aeronomy (IAGA) Division V Working Group 8, periodically examines various geomagnetic field representations from which the Earth's main field and its secular variation can be computed. They produce a set of coefficients to represent the main field at a particular epoch, usually every 5 years, and name it the International Geomagnetic Reference Field (IGRF). Also, if a previous IGRF is re‐derived using new data not available at the time of its production and agreed upon when it is clear that no additional data are likely to emerge, it is called a Definitive Geomagnetic Reference Field (DGRF). For similar reasons, no DGRF model for 1995 has yet been adopted by the IAGA, Division V Working Group 8. Note that, when referring to these models, the designation “IGRF” refers to all available models, viewed collectively. If a particular model is intended, the reference must be specific; i.e., IGRF2000 or DGRF1990, rather than simply IGRF or DGRF