Earth System Science Data
Earth System Science Data
Earth System Science Data
Articles | Volume 13, issue 2
Articles | Volume 13, issue 2
https://doi.org/10.5194/essd-13-809-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-13-809-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 13, issue 2
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, Paulo Ribeiro, and M. Alexandra Pais

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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.
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