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.

Data sets

Monthly values of absolutely measured geomagnetic components (D, I, H, Z, 515 F) of Coimbra observatory in the period 1866-2015 P. Ribeiro, M. A. Pais, and A. L. Morozova

Homogenized monthly datasets of all geomagnetic components of Coimbra observatory for the time period 1866-2015 A. Morozova, P. Ribeiro, and M. A. Pais

Homogenization of Portuguese long-term temperature data series: Lisbon, Coimbra and Porto A. L. Morozova and M. A. Valente

Geomagnetic Kp index. V. 1.0 J. Matzka, O. Bronkalla, K. Tornow, K. Elger, and C. Stolle

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.