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.
Dataset Citation
Cite this dataset when used as a source.
Dataset Identifiers
- ID not available.
ISO 19115-2 Metadata
gov.noaa.ngdc.stp.geomag:G10118
Other Access | Online access information not available. |
Distribution Formats | Format not available |
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
|
Spatial Coverage Map |
Documentation links not available. |
Publication Dates |
|
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. |
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 |
|
Publishers |
|
Theme keywords |
NASA/GCMD Earth Science Keywords
|
Data Center keywords |
Global Change Master Directory (GCMD) Data Center Keywords
|
Use Constraints |
|
Access Constraints |
|
Fees | Fee information not available. |
Lineage information for: repository | |
---|---|
Processing Steps |
|
Acquisition Information (collection) | |
---|---|
Operation |
|
Last Modified: 2015-09-18
For questions about the information on this page, please email: Justin.Mabie@noaa.gov
For questions about the information on this page, please email: Justin.Mabie@noaa.gov