Weights for calculation of magnetic field at INTERMAGNET observatories for 3-D conductivity model of the Earth in the time domain

Weights are calculated with time step of 1 hour and memory of 4320 hours for two cases.

1. The source is parametrized by spherical harmonics up to degree 4 (MB_SHS_modes_up_to_24_at_obs.h5 )
2. The source is parametrized by so-called periodic modes, obtained from the output of TIEGCM (MB_periodic_modes_16_24_at_obs.h5)

The detailed desciption of the weights meaning and calculation can be found in Kruglyakov & Kuvshinov, 2024.

• Datasets M_B_r stand for radial (upward) component of the magnetic field at the ground;
• Datasets M_B_theta stand for southward component of the magnetic field at the ground;
• Datasets M_B_phi stand for eastward component of the magnetic field at the ground;
• Datasets Theta stand for the co-latitudes of the observatories in the geo-centric cooridnate system
• Datasets Phi stand for the longitudes of the observatories in the geo-centric cooridnate system