Geomagnetic Observatory Annual Means Data
The NOAA National Centers for Environmental Information (formerly National Geophysical
Data Center) / World Data Center, Boulder maintains an active database of worldwide
geomagnetic observatory data. Historically, magnetic observatories were established
to monitor the secular change (variation), of the Earth's magnetic field, and this
remains one of their most important functions. This generally involves absolute measurements
sufficient in number to monitor instrumental drift and to produce annual means. While
the current global network of geomagnetic observatories involves over 70 countries
operating more than 200 observatories, the historic database includes observations
from more than 600 observatories since the early 1800s. The magnetic observatory data
are crucial to the studies of secular change, investigations into the Earth's interior,
navigation, communication, and to global modeling efforts. The Earth's magnetic field
is described by seven parameters. These are declination (D), inclination (I), horizontal
intensity (H), vertical intensity (Z), total intensity (F) and the north (X) and east
(Y) components of the horizontal intensity. By convention, declination is considered
positive when measured east of north, inclination and vertical intensity positive
down, X positive north, and Y positive east. The magnetic field observed on Earth
is constantly changing.
Cite this dataset when used as a source.
- ID not available.
gov.noaa.ngdc.stp.geomag:G10118
Other Access | Online access information not available. |
Distribution Formats | Format not available
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Distributor | Distributor information not available |
Dataset Point of Contact | Justin Mabie Space and Terrestrial Weather Specialist DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce (303) 497-6135 Justin.Mabie@noaa.gov |
Time Period | 1813-01-01 to Present |
Spatial Bounding Box Coordinates |
West:-180.0
East:180.0
South:-89.0
North:89.0
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Spatial Coverage Map |
Documentation links not available. |
Publication Dates |
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Dataset Progress Status | Under development - data is currently in the process of being created |
Data Update Frequency | Annually |
Supplemental Information |
NCEI(NGDC) / WDC, Boulder compiles this global database with the cooperation and collaboration
of geomagnetic observing organizations worldwide. Please recognize the specific data
providers as shown in the station metadata when using this data.
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Purpose | To further the understanding of Earth magnetism and the Sun-Earth environment and to monitor the secular change (variation), of the Earth's magnetic field. |
Originators |
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Publishers |
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Theme keywords | NASA/GCMD Earth Science Keywords
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Data Center keywords | Global Change Master Directory (GCMD) Data Center Keywords
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Use Constraints |
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Access Constraints |
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Fees | Fee information not available. |
Processing Steps |
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Operation |
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Last Modified: 2015-09-18
For questions about the information on this page, please email:Justin.Mabie@noaa.gov