The magnetic equator is the region where the magnetic field is horizontal and therefore strong ionospheric electric currents occur, the so-called equatorial electrojet. The magnetic equator is predicted to be at Macapá state in 2024. Therefore, a new magnetometer station was installed in Macapá in order to track the effects of the equatorial electrojet. We present the setup and data analysis of Macapá station, and we develop a method for temperature correction of the vector magnetometer data.

Geomagnetic observatories are dedicated to the long-term monitoring of the Earth's magnetic field. Their time series contain information mainly about the Earth's core and the near-Earth space environment. MOSFiT accesses a global database with the most recent observatory data and allows us to separate the information about the Earth's core. At the same time, it allows for an efficient check of the data quality. We present the code, validate it and explain its usage.