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Table 1. The primary outputs of the Fast-Track Magnetospheric Model. The outputs will be released in Common Data Format (CDF) that will include basic meta-data describing the output.

From: Rapid modelling of the large-scale magnetospheric field from Swarm satellite data

Output

Description

Modified Julian Day

Time in decimal days since year 2000.0. This is the mid-point of the validity range of each 90 minute model in decimal days since midnight on morning of January 1st, 2000.

Coefficients

Degree 1 internal and external spherical harmonic coefficients provided in Geographic (Earth-centred, Earth-fixed) and Solar Magnetic coordinates. Twelve coefficients in total.

Number of data

The number of data contributing to each model, individually from each satellite.

RMS differences

Root-mean-squared differences between X (north), Y (east), and Z (downward) magnetic field values from the model and the input data after subtraction of core, lithosphere, and ionospheric signals.

Quality

A quality flag whose values indicate any issues with the model (zero indicates ‘no issues’).