NCEI (formerly NGDC)
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Geomagnetic Observatory Database February 2004

The NOAA National Centers for Environmental Information (formerly National Geophysical Data Center) maintains an active database of worldwide geomagnetic observatory data to further the understanding of Earth magnetism and the Sun-Earth environment.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. Over 70 countries operate more than 200 observatories worldwide. 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. In addition to the continuously operating magnetic observatories, many countries make measurements at temporary magnetic stations (known as repeat stations), over a period of days every 5 - 10 years.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.
Distribution Formats
  • TIFF
Distributor 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
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
Documentation links not available.
Date(s)
  • publication: 1972-01-01
Edition: First
Dataset Progress Status Under development
Data Update Frequency: Annually
Supplemental Information:
Formally FE 17, 119, 626. Entry_ID G01152
Purpose: Provide information for research and surveyors
Use Limitations
  • While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
Originator(s)
  • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
Publisher(s)
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
Time Period: 1800-01-01 to Present
Spatial Bounding Box Coordinates:
N: 90.000000
S: -90.000000
E: 180.000000
W: -180.000000
Spatial Coverage Map:
Theme keywords NASA/GCMD Earth Science Keywords
  • EARTH SCIENCE > SOLID EARTH > Geomagnetism > Geomagnetic Forecasts
  • EARTH SCIENCE > SOLID EARTH > Geomagnetism > Geomagnetic Indices
  • EARTH SCIENCE > SOLID EARTH > Geomagnetism > Geomagnetic Induction
  • EARTH SCIENCE > SOLID EARTH > Geomagnetism > Magnetic Anomalies
  • EARTH SCIENCE > SOLID EARTH > Geomagnetism > Magnetic Declination
  • EARTH SCIENCE > SOLID EARTH > Geomagnetism > Magnetic Inclination
  • EARTH SCIENCE > SOLID EARTH > Geomagnetism > Magnetic Intensity
  • EARTH SCIENCE > SOLID EARTH > Geomagnetism > Paleomagnetism
  • EARTH SCIENCE > SOLID EARTH > Geomagnetism > Reference Fields
Uncontrolled Keywords
  • Secular Change
  • Magnetic Total Intensity
  • Magnetic Declination
  • Magnetic Observatory
  • Magnetic Models
  • Magnetic Survey
  • Magnetospheric Science
Data Center keywords Global Change Master Directory (GCMD) Data Center Keywords
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
Place keywords NASA/GCMD Location Keywords
  • Global
Use Constraints
  • Use Constraints: None
Access Constraints
  • Access Constraints: No Constraints
Fees
  • Free
Lineage information for: repository
Processing Steps
  • 2015-04-22T00:00:00 - NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
Lineage information for: dataset
Processor
  • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
Processing Steps
  • Placed in Purgartory 1/26/2007 because info in this record may be used to create other records.
Last Modified: 2015-09-18
For questions about the information on this page, please email: Justin.Mabie@noaa.gov