UASD Magnetometers: AACGM

At BAS we use the PACE GeoMagnetic (PGM) coordinate system devised by Baker and Wing (1989). Their algorithms for geographic to geomagnetic coordinate transformations and vice-versa are available as FORTRAN subroutines and are used in the PACE analysis software. Their paper also explains the concept of Magnetic Local Time (MLT) which is analogous to ordinary geographic local time (LT) but uses magnetic longitude instead of geographic longitude.

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