Enhanced Magnetic Model 2015
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
5 resources available
-
Metadata Landing Page
TEXT/HTML -
EMM Home Page
TEXT/HTML -
EMM2015_Sph_Linux.zip
HTML -
GCMD Keyword Forum Page
TEXT/HTML -
NCEI Contact Information
TEXT/HTML
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Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | non-public |
| contactPoint |
{
"fn": "Not provided - Contact data.gov",
"hasEmail": "mailto:datagovsupport@gsa.gov"
}
|
| describedByType | application/octet-steam |
| 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. |
| distribution |
[
{
"@type": "dcat:Distribution",
"title": "Metadata Landing Page",
"accessURL": "https://www.ncei.noaa.gov/metadata/geoportal/rest/metadata/item/gov.noaa.ngdc.mgg.geophysical_models:EMM2015/html",
"mediaType": "text/html",
"describedByType": "application/octet-stream"
},
{
"@type": "dcat:Distribution",
"title": "EMM Home Page",
"accessURL": "https://www.ngdc.noaa.gov/geomag/EMM/index.html",
"mediaType": "text/html",
"describedByType": "application/octet-stream"
},
{
"@type": "dcat:Distribution",
"title": "EMM2015_Sph_Linux.zip",
"format": "HTML",
"mediaType": "text/html",
"description": "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.",
"downloadURL": "https://www.ngdc.noaa.gov/geomag/EMM/EMMSurveySPH.shtml",
"describedByType": "application/octet-stream"
},
{
"@type": "dcat:Distribution",
"title": "GCMD Keyword Forum Page",
"accessURL": "https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords",
"mediaType": "text/html",
"description": "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",
"describedByType": "application/octet-stream"
},
{
"@type": "dcat:Distribution",
"title": "NCEI Contact Information",
"accessURL": "https://www.ncei.noaa.gov/contact",
"mediaType": "text/html",
"description": "Information for contacts at NCEI.",
"describedByType": "application/octet-stream"
}
]
|
| identifier | https://data.noaa.gov/waf/NOAA/NESDIS/NGDC/MGG/Geophysical_Models/iso/xml/EMM2015.xml |
| issued | 2015-05-15T00:00:00.000+00:00 |
| keyword |
[
"Earth Science > Solid Earth > Geomagnetism > Magnetic Field",
"Earth Science > Solid Earth > Geomagnetism > Magnetic Intensity",
"Earth Science > Solid Earth > Geomagnetism > Magnetic Declination",
"Earth Science > Solid Earth > Geomagnetism > Magnetic Inclination",
"Earth Science > Solid Earth > Geomagnetism > Magnetic Anomalies",
"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",
"Geographic Region > Global"
]
|
| language |
[]
|
| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 2015-05-15T00:00:00.000+00:00 |
| publisher |
{
"name": "NOAA National Centers for Environmental Information",
"@type": "org:Organization"
}
|
| rights | otherRestrictions |
| spatial | 180.0,-90.0,-180.0,90.0 |
| temporal | 2000-01-01T00:00:00+00:00/2019-12-31T00:00:00+00:00 |
| title | Enhanced Magnetic Model 2015 |
