Enhanced Magnetic Model 2015

Description

The Enhanced Magnetic Model (EMM) extends to degree and order 720, resolving magnetic anomalies down to 56 km wavelength. The higher resolution of the EMM results in significantly improved pointing accuracy than the World Magnetic Model (WMM), which uses spherical harmonic representation to degree and order 12, resolving the magnetic field at 3000 km wavelength. The EMM model provides the magnetic field vector at any desired location and altitude close to and above the Earth's surface.

Resources

Name Format Description Link
0 https://www.ncei.noaa.gov/metadata/geoportal/rest/metadata/item/gov.noaa.ngdc.mgg.geophysical_models:EMM2015/html
21 index.html https://www.ngdc.noaa.gov/geomag/EMM/index.html
0 Information for contacts at NCEI. https://www.ncei.noaa.gov/contact
21 Enhanced Magnetic Model (EMM2015) and software using the spherical harmonic approach for Windows environments. High CPU requirements (use the faster Mesh software for large number of points), very low RAM requirement. For use with years 2000 to 2020. https://www.ngdc.noaa.gov/geomag/EMM/EMMSurveySPH.shtml
21 Enhanced Magnetic Model (EMM2015) and software using the spherical harmonic approach for Mac environments. High CPU requirements (use the faster Mesh software for large number of points), very low RAM requirement. For use with years 2000 to 2020. https://www.ngdc.noaa.gov/geomag/EMM/EMMSurveySPH.shtml
0 Global Change Master Directory (GCMD). 2024. GCMD Keywords, Version 19. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
0 Global Change Master Directory (GCMD). 2024. GCMD Keywords, Version 19. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
21 Enhanced Magnetic Model (EMM2015) and software using the spherical harmonic approach for Linux environments. High CPU requirements (use the faster Mesh software for large number of points), very low RAM requirement. For use with years 2000 to 2020. https://www.ngdc.noaa.gov/geomag/EMM/EMMSurveySPH.shtml
0 Global Change Master Directory (GCMD). 2024. GCMD Keywords, Version 19. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords

Tags

  • magnetic declination
  • nesdis
  • magnetic field
  • magnetic inclination
  • national geophysical data center
  • noaa
  • global
  • magnetic anomalies
  • u.s. department of commerce
  • earth science
  • geographic region
  • magnetic intensity
  • doc/noaa/nesdis/ngdc
  • solid earth
  • doc/noaa/nesdis/ncei
  • geomagnetism
  • national centers for environmental information

Topics

Categories