Short product names


Full product name
Model of non-polar daily geomagnetic variation caused by ionospheric currents, derived in comprehensive chain (CI)


This product contains a model of non-polar daily geomagnetic variation caused by ionospheric currents, including their variability with season and solar flux, derived in Comprehensive Inversion chain.


Product Identifier MIO_SHA_2C
Definition Spherical harmonic representation of the daily geomagnetic variations at mid and low
latitudes (Sq and EEJ) and of its induced counterpart
Input Data MAGx_LR_1R, AUX_DST_2_, AUX_KP__2_, AUX_F10_2_, Q3D_CI_i2_
Input time span All available quiet time observations from the mission
Spatial representation Spherical Harmonics up to degree 60 and order 12 in dipole coordinates
Time representation Fourier Series, seasonal and daily periodicity
Units nT
Resolution 1 pT
Uncertainty Refer to product quality report
Quality indicator Statistics of data misfit provided in the validation report
Data volume ~130 kB
Data format ASCII listing
Output data Coefficients of SH model in dipole coordinates, with seasonal and diurnal periodicity
Output time span N/A
Update rate First after 1 year, updated every year
Latency 1.5 months

Part of the CI (comprehensive inversion) chain, related to the "CM" model series, see e.g.: Sabaka, T.J., Tøffner-Clausen, L., Olsen, N. et al. CM6: a comprehensive geomagnetic field model derived from both CHAMP and Swarm satellite observations. Earth Planets Space 72, 80 (2020).