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CALS3K.1 DIGITAL RESOURCES
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1. Animations of magnetic field and secular variation evolution (files *.mpg)

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The files are named by the components:

Br  radial component at the CMB in mT
BN  non axial dipole radial component (Br minus axial dipole contribution) at the CMB in mT
D   declination at the Earth's surface in degrees
I   inclination anomaly (I minus axial dipole contribution) at the Earth's surface in degrees
SV  secular variation of Br in mT


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The numbers in the file names give the viewpoints:

1   Aitoff equal area projection centered on 180 deg. longitude
2   Aitoff equal area projection centered on 0 deg. longitude 
3   Lambert equal area projection, Northern hemisphere, centered on the geographic pole
(Southern hemisphere centered on the pole is omitted due to the sparse data coverage and 
 subsequent low reliability and lack of structure of the model in large parts there)

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2. Plates with snapshots of the continuous model in 100 year intervals 
(files *.eps or *.pdf)


Same components and viewpoints as above. There are three files for every viewpoint;
the first number in the filename gives the viewpoint, the second number the time interval 
for which the 4 above components are plotted:

1   1000 BC to  100 BC
2      0 AD to  900 AD 
3   1000 AD to 1800 AD
(e.g. field1_2.eps are the Aitoff plots centered on 180 deg. for 0 AD to 900 AD)

For secular variation there are two files for the two viewpoints of Br only.

Units are mT for Br and BrNAD, degrees for declination and inclination anomaly.

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3. Model coefficients and FORTRAN code


File CALS3K.1 contains the time-dependent model coefficients. 
Two FORTRAN programs are provided to evaluate the model:

CALS3Kcoefs.f        calculates the Gauss coefficients for an input epoch
CALS3Kfield.f        gives the model predictions for declination and inclination
                     at the Earth's surface for an input time and location

See the details at the beginnings of the files for details. These are modifications
of the example program to evaluate the field model UFM/GUFM by Jeremy Bloxham and 
Andrew Jackson.

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