Comparison of IGRF candidate models with the Canadian geomagnetic reference field for 1985-1995

The DGRF/IGRF candidate models have been compared to the Canadian Geomagnetic Reference Field 1990 (CGRF90) over the approximate area of Canada. It is found that all candidate models for 1985 are of equal quality when compared to the CGRF90. For 1990, the BGS/NOAA and IZMIRAN models more closely agree with the CGRF. The BGS/NOAA secular variation model differs from the CGRF90 by up to 30nT/yr in the vertical component.