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Volume 52 Supplement 12

Special Issue: Geomagnetic Field Modelling and IGRF 2000

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Determination of the IGRF 2000 model

Earth, Planets and Space volume 52, pages 1175–1182 (2000)Cite this article

Abstract

The IGRF 2000 has been estimated from magnetic measurements taken by the Ørsted sattelite in summer 1999. For this purpose, three models have been derived: The first two models were estimated using a few geomagnetic quiet days in May and September 1999, respectively. The third model, called Oersted(10c/99), was derived from scalar data spanning six months and vector data spanning four months. In order to get a model for epoch 2000.0, the IGRF 95 secular variaion model has been applied to the data. The IGRF 2000 model was taken to be the internal degree/order 10 portion of Oersted(10c/99). We describe the data selection, model parameterization, parameter estimation and an evaluation of the three models.

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Authors and Affiliations

  1. Danish Space Research Institute, Juliane Maries Vej 30, DK, 2100, Copenhagen, Denmark

    Nils Olsen

  2. Raytheon ITSS, Lanham, MD, 20706, USA

    Terence J. Sabaka

  3. Ørsted Science Data Center, DMI, Lyngbyvej 100, DK, 2100, Copenhagen, Denmark

    Lars Tøffner-Clausen

Authors
  1. Nils Olsen
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  2. Terence J. Sabaka
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  3. Lars Tøffner-Clausen
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Correspondence to Nils Olsen.

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Olsen, N., Sabaka, T.J. & Tøffner-Clausen, L. Determination of the IGRF 2000 model. Earth Planet Sp 52, 1175–1182 (2000). https://doi.org/10.1186/BF03352349

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  • DOI: https://doi.org/10.1186/BF03352349

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