Articles | Volume 13, issue 2
Earth Syst. Sci. Data, 13, 809–825, 2021
Earth Syst. Sci. Data, 13, 809–825, 2021

Data description paper 03 Mar 2021

Data description paper | 03 Mar 2021

Homogenization of the historical series from the Coimbra Magnetic Observatory, Portugal

Anna L. Morozova et al.

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Cited articles

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Short summary
The Coimbra Magnetic Observatory (COI), Portugal, established in 1866, has provided nearly continuous records of the geomagnetic field for more than 150 years. However, during its long lifetime inevitable changes to the instruments and measurement procedures and even the relocation of the observatory have taken place. Such changes affect the quality of the measurements, introducing false (artificial) variations. We analyzed COI historical data to find and correct such artificial variations.