A database of geomagnetic observatory monthly means: from historic to the satellite era
William Brown, Susan Macmillan, Eleanor Maume, Eliot Eaton
TL;DR
This paper creates a unified database of monthly geomagnetic observations from 1883 to the present, combining historical and modern data for researchers.
Contribution
The paper introduces a consistent, accessible database of global geomagnetic monthly means, integrating historical and modern data.
Findings
The database includes 327 observatories with data from 1883 to the present.
Historical data from 1841–1925 were digitized but not included due to incomplete field vector information.
The database is freely available and updated monthly via a web service.
Abstract
This work brings together the contents of previously disparate databases of absolute ground geomagnetic observations, both historic and ongoing, to process the data consistently into a coherent and accessible format for researchers. This includes converting reported time resolutions and coordinate systems into a uniform format, and applying all documented observatory baseline changes to the data records, to create a single unified vector time series of monthly mean values for each geomagnetic observatory. The data are made available freely and anonymously to researchers via a web service, updated on a monthly basis with the latest definitive and non-definitive observations reported to the World Data Centre for Geomagnetism (Edinburgh) and INTERMAGNET or Tromsø Geophysical Observatory, respectively. The current database covers 327 observatories worldwide, with observations from 1883 up…
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Taxonomy
TopicsGeomagnetism and Paleomagnetism Studies · Ionosphere and magnetosphere dynamics · Geophysics and Gravity Measurements