C. Beggan and K. Whaler, Forecasting secular variation using core flows, Earth Planets Space, 62, this issue, pp.821-828, 2010.
DOI : 10.5047/eps.2010.07.004

URL : http://doi.org/10.5047/eps.2010.07.004

A. Chambodut, B. Langlais, M. Menvielle, E. Thébault, A. Chulliat et al., Candidate models for the IGRF-11th generation making use of extrapolated observatory data, Earth Planets Space, 62, this issue, pp.745-751, 2010.

C. C. Finlay, S. Maus, C. D. Beggan, M. Hamoudi, F. J. Lowes et al., Evaluation of candidate geomagnetic field models for IGRF-11, Earth Planets Space, 62, this issue, pp.787-804, 2010.

E. Friis-christensen, H. Lühr, and G. Hulot, SWARM: A constellation to study the Earth's magnetic field, Earth Planets Space, pp.351-358, 2006.

E. Friis-christensen, H. Lühr, G. Hulot, R. Haagmans, and M. Purucker, Geomagnetic Research From Space, Eos, Transactions American Geophysical Union, vol.299, issue.17, pp.90-213, 2009.
DOI : 10.1029/2009EO250002

URL : http://orbit.dtu.dk/ws/files/3595740/EFC_EOS%202009.pdf

G. Hulot and J. Mouël, A statistical approach to the Earth's main magnetic field, Physics of the Earth and Planetary Interiors, vol.82, issue.3-4, pp.167-183, 1994.
DOI : 10.1016/0031-9201(94)90070-1

R. A. Langel and W. Hinze, The Magnetic Field of the Earth's Lithosphere: The Satellite Perspective, 1998.

V. Lesur, I. Wardinski, M. Rother, and M. Mandea, GRIMM: the GFZ Reference Internal Magnetic Model based on vector satellite and observatory data, Geophysical Journal International, vol.173, issue.2, pp.382-394, 2008.
DOI : 10.1111/j.1365-246X.2008.03724.x

V. Lesur, I. Wardinski, M. Hamoudi, and M. Rother, The second generation of the GFZ Reference Internal Magnetic Model: GRIMM-2, Earth Planets Space, 62, this issue, pp.765-773, 2010.

F. Lowes, Spatial Power Spectrum of the Main Geomagnetic Field, and Extrapolation to the Core, Geophysical Journal International, vol.36, issue.3, pp.717-730, 1974.
DOI : 10.1111/j.1365-246X.1974.tb00622.x

S. Maus, S. Macmillan, T. Chernova, S. Choi, D. Dater et al., The 10th-Generation International Geomagnetic Reference Field, Geophys, J. Int, vol.161, pp.561-565, 2005.
DOI : 10.1016/j.pepi.2005.03.006

S. Maus, C. Manoj, J. Rauberg, I. Michaelis, and H. Lühr, NOAA/NGDC candidate models for the 11th generation International Geomagnetic Reference Field and the concurrent release of the 6th generation Pomme magnetic model, Earth Planets Space, 62, this issue, pp.729-735, 2010.

N. Olsen and M. Mandea, Rapidly changing flows in the Earth???s core, Nature Geoscience, vol.166, issue.6, pp.390-394, 2008.
DOI : 10.1038/ngeo203

N. Olsen, T. Sabaka, and F. Lowes, New parameterization of external and induced fields in geomagnetic field modeling, and a candidate model for IGRF 2005, Earth, Planets and Space, vol.30, issue.12, pp.1141-1149, 2005.
DOI : 10.1186/BF03351897

N. Olsen, H. Lühr, T. Sabaka, M. Mandea, M. Rother et al., CHAOS-a model of the Earth's magnetic field derived from CHAMP, ??rsted, and SAC-C magnetic satellite data, Geophysical Journal International, vol.166, issue.1, pp.67-75, 2006.
DOI : 10.1111/j.1365-246X.2006.02959.x

N. Olsen, M. Mandea, T. Sabaka, and L. Tøffner-clausen, CHAOS-2? A Geomagnetic field model derived from one decade of continuous satellite data, Geophys, J. Int, vol.179, pp.1477-1487, 2009.

N. Olsen, M. Mandea, T. J. Sabaka, and L. Tøffner-clausen, The CHAOS- 3 geomagnetic field model and candidates for the 11th generation IGRF, Earth Planets Space, 62, this issue, pp.719-727, 2010.

T. Sabaka, N. Olsen, and M. Purucker, Extending comprehensive models of the Earth's magnetic field with ??rsted and CHAMP data, Geophysical Journal International, vol.159, issue.2, pp.521-547, 2004.
DOI : 10.1111/j.1365-246X.2004.02421.x

C. Stolle, H. Lühr, M. Rother, and G. Balasis, Magnetic signatures of equatorial spread F as observed by the CHAMP satellite, J. Geophys. Res, vol.111, 2006.

E. Thébault, A. Chulliat, S. Maus, G. Hulot, B. Langlais et al., IGRF candidate models at times of rapid changes in core field acceleration, Earth Planets Space, 62, this issue, pp.753-763, 2010.

L. Silva, S. Maus, G. Hulot, and E. Thébault, e-mail: lacsilva@ipgp.fr)