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Metadata Identifier: gov.noaa.ngdc.mgg.geophysical_models:EMM2010

Aggregation Info | Bands | Citations | Constraints | Coverage Descriptions | Dimensions | Extents | Formats | Geographic Bounding Box
Georectified Information | Georeferenceable Information | Identifiers | Instruments | Mediums | OnlineResources | Operations
Platforms | Process Steps | Range Elements | Reference Systems | Responsible Parties | Series | Sources | Spatial Grids | Temporal Extents

MD_DataIdentification

Count Component Title Abstract
1 Enhanced Magnetic Model 2010 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.
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SV_Identification

none found
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CI_Citation

Count Component Title Date Citation Identifier
1 An ellipsoidal harmonic representation of Earth's lithospheric magnetic field to degree and order 720
  • 2010-03-25
1 CHAMP Satellite Data
  • 2009-12-31
1 Enhanced Magnetic Model 2010
  • 2009-12-15
doi:10.7289/V5HH6H0D
1 GEODAS magnetic data
  • 2013-02-06
1 INTERMAGNET Observatory Data
  • 2009-12-31
1 GCMD Data Center Keywords NASA/GCMD Data Center Keywords
    1 GCMD Location Keywords NASA/GCMD Location Keywords
      1 GCMD Science Keywords NASA/GCMD Science Keywords
        1 ORSTED Satellite Data
        • 2009-12-31
        3 WMM2010 Report The US/UK World Magnetic Model for 2010-2015
        • 2009-12-01
        1 World Geodetic System 1984
        • 2007-08-27
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        CI_Series

        none found
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        CI_ResponsibleParty

        Count Component Individual Organization Position Email Role Linkage
        1 resourceProvider http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:crs:EPSG::4326
        3 GCMD Valids custodian http://gcmd.nasa.gov/learn/keyword_list.html
        4 originator http://ngdc.noaa.gov/geomag/WMM/data/WMM2010/WMM2010_Report.pdf
        2 Brian Meyer Brian Meyer DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Brian.Meyer@noaa.gov pointOfContact
        1 DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce distributor http://www.ngdc.noaa.gov/geomag/EMM/index.html
        1 Danish Meteorological Institute originator http://web.dmi.dk/projects/oersted/
        1 EPSG Registry European Petroleum Survey Group publisher http://www.epsg-registry.org/
        1 GFZ German Research Centre for Geosciences originator http://op.gfz-potsdam.de/champ/
        1 International Real-time Magnetic Observatory Network originator http://www.intermagnet.org
        3 GCMD User Support Office NASA GCMD User Support Office gcmduso@gcmd.gsfc.nasa.gov custodian http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso
        7 NGDC Geomagnetic Modeling Team NGDC Geomagnetic Modeling Team DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce geomag.models@noaa.gov pointOfContact http://www.ngdc.noaa.gov/geomag/
        1 NGDC Geomagnetic Modeling Team NGDC Geomagnetic Modeling Team DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce geomag.models@noaa.gov originator http://www.ngdc.noaa.gov/geomag/
        1 NGDC Geomagnetic Modeling Team NGDC Geomagnetic Modeling Team DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce geomag.models@noaa.gov publisher http://www.ngdc.noaa.gov/geomag/
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        CI_OnlineResource

        Count Component Linkage Name Description Function
        3 http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso GCMD Feedback Form Have a Comment for the GCMD? information
        3 GCMD Keyword Page http://gcmd.nasa.gov/learn/keyword_list.html GCMD Keywords Page This page describes the NASA GCMD Keywords, how to reference those keywords and provides download instructions. information
        1 http://geomag.org/info/Smaus/Doc/ngdc720.pdf
        3 http://ngdc.noaa.gov/geomag/WMM/data/WMM2010/WMM2010_Report.pdf
        1 http://op.gfz-potsdam.de/champ/ The CHAMP Mission Webpage provided details on equipment, mission, as well as results and publications associated with the CHAMP mission. information
        1 http://web.dmi.dk/projects/oersted/ The Orsted Satellite Project Webpage provided details on equipment, mission, as well as results and publications associated with the Orsted satellite mission. information
        1 http://www.epsg-registry.org/ European Petroleum Survey Group Geodetic Parameter Registry Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured dataset of Coordinate Reference Systems and Coordinate Transformations. search
        1 http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:crs:EPSG::4326 WGS 84 GML of World Geodetic System 1984 coordinate reference system. information
        1 http://www.intermagnet.org INTERMAGNET Program Website provides information on participating institutions, observatory locations, and publications associated with the network of observatories. information
        9 http://www.ngdc.noaa.gov/geomag/
        1 http://www.ngdc.noaa.gov/geomag/EMM/EMMSurvey2006.shtml EMM-06.tar.gz Software for the Enhanced Magnetic Model (EMM-06), including main field, secular variation, NGDC-720-V1 crustal field, magnetospheric field, and induced field. The package includes a simple single-point program and a thread-safe multi-processor application which can be adapted to produce large grids and time series. download
        1 http://www.ngdc.noaa.gov/geomag/EMM/EMMSurvey2009.shtml EMM2010_Dec-15-09.zip Enhanced Magnetic Model (EMM2010) with software for point and grid calculation. download
        1 http://www.ngdc.noaa.gov/geomag/EMM/EMMSurveyMesh.shtml EMM2010_Mesh_Windows_Linux.zip Enhanced Magnetic Model (EMM2010) with software with rapid field calculation using 3D mesh interpolation for Windows and Linux environments. Low CPU requirements, High (1.4 GB) RAM requirement. Only works for years 2010-2015, for 2000-2010 please download the spherical harmonic version above. download
        1 http://www.ngdc.noaa.gov/geomag/EMM/EMMSurveySPH.shtml EMM2010_Sph_Windows_Linux.zip Enhanced Magnetic Model (EMM2010) and software using the spherical harmonic approach for Windows and Linux environments. High CPU requirements (use the faster Mesh software for large number of points), very low RAM requirement (7.5 MB). For use with years 2000 to 2015. download
        1 http://www.ngdc.noaa.gov/geomag/EMM/EMMSurveyV3p0.shtml EMM-720_V3p0.tar.gz Enhanced Magnetic Model with software for rapid field calculation using 3D mesh interpolation. download
        1 http://www.ngdc.noaa.gov/geomag/EMM/data/geomag/EMM-720_V3p0_secvar.cof.gz EMM-720_V3p0_secvar.cof.gz Enhanced Magnetic Model. Spherical Harmonic Coefficients of the estimated secular variation 2010-2015. download
        1 http://www.ngdc.noaa.gov/geomag/EMM/data/geomag/EMM-720_V3p0_static.cof.gz EMM-720_V3p0_static.cof.gz Enhanced Magnetic Model. Spherical Harmonic Coefficients of the static internal field at 2010.0. download
        1 http://www.ngdc.noaa.gov/geomag/EMM/index.html
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        MD_Identifier or RS_Identifier

        Count Component Code
        1 Processing steps were carried out collectively by the developers of the model. These developers are listed as authors of the associated paper "An ellipsoidal harmonic representation of Earth's lithospheric magnetic field to degree and order 720".
        1 Processing steps were carried out collectively by the developers of the model. These developers are listed as authors of the associated paper "The US/UK Magnetic Model 2010-2015" which can be found at http://ngdc.noaa.gov/geomag/WMM/data/WMM2010/WMM2010_Report.pdf
        2 Processing steps were carried out collectively by the developers of the model. These developers are listed as authors of the associated paper "The US/UK Magnetic Model 2010-2015".
        1 doi:10.7289/V5HH6H0D
        1 urn:ogc:def:crs:EPSG::4326
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        EX_Extent

        Bounding Box Temporal Extent
        Count Component Description West East North South Start End
        1 -180 180 90 -90 2000-01-01 2014-12-31
        1 -180 180 90 -90 2000-07-15 2010-09-19
        1 -180 180 90 -90 1999-02-23 2009-11-30
        1 -177.383 172.35 82.5 -77.85
        1 -180 180 90 -90
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        EX_GeographicBoundingBox

        Count Component West East North South
        4 -180 180 90 -90
        1 -177.383 172.35 82.5 -77.85
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        EX_TemporalExtent

        Count Component Start End
        1 2000-01-01 2014-12-31
        1 2000-07-15 2010-09-19
        1 1999-02-23 2009-11-30
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        MD_Format

        Count Component Name Version specification
        1 EMM-06.tar.gz 3 Software for the Enhanced Magnetic Model (EMM-06), including main field, secular variation, NGDC-720-V1 crustal field, magnetospheric field, and induced field. The package includes a simple single-point program and a thread-safe multi-processor application which can be adapted to produce large grids and time series.
        1 EMM-720_V3p0.tar.gz 3 Enhanced Magnetic Model with software for rapid field calculation using 3D mesh interpolation.
        1 EMM-720_V3p0_secvar.cof.gz 3 Enhanced Magnetic Model. Spherical Harmonic Coefficients of the estimated secular variation 2010-2015.
        1 EMM-720_V3p0_static.cof.gz 3 Enhanced Magnetic Model. Spherical Harmonic Coefficients of the static internal field at 2010.0.
        1 EMM2010_Dec-15-09.zip 1 Enhanced Magnetic Model (EMM2010) with software for point and grid calculation.
        1 EMM2010_Mesh_Windows_Linux.zip 3 Enhanced Magnetic Model (EMM2010) with software with rapid field calculation using 3D mesh interpolation for Windows and Linux environments. Low CPU requirements, High (1.4 GB) RAM requirement. Only works for years 2010-2015, for 2000-2010 please download the spherical harmonic version above.
        1 EMM2010_Sph_Windows_Linux.zip 4 Enhanced Magnetic Model (EMM2010) and software using the spherical harmonic approach for Windows and Linux environments. High CPU requirements (use the faster Mesh software for large number of points), very low RAM requirement (7.5 MB). For use with years 2000 to 2015.
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        MD_Medium

        none found
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        MD_Constraints

        Count Component Use Limitation
        1 NGDC Copyright Produced by the NOAA National Geophysical Data Center. Not subject to copyright protection within the United States.
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        MD_ReferenceSystem

        Count Component Code Authority Title
        1 WGS 84 urn:ogc:def:crs:EPSG::4326 World Geodetic System 1984
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        MD_GridSpatialRepresentation

        Count Component Number of Dimensions Cell Geometry Code
        1 2 point
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        MD_Georeferenceable or MI_Georeferenceable

        none found
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        MD_Georectified or MI_Georectified

        none found
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        MD_Dimension

        none found
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        MD_CoverageDescription or MI_CoverageDescription

        Count Component Attribute Description Content Type
        1 Grid Cell
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        MD_Band or MI_Band

        Count Component Identifier Descriptor
        1 Northerly Intensity
        1 Easterly Intensity
        1 Vertical Intensity
        1 Horizontal Intensity
        1 Total Intensity
        1 Inclination
        1 Declination
        1 Grid Variation
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        MI_RangeElementDescription

        none found
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        MD_AggregateInformation

        none found
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        LE_Source or LI_Source

        Count Component Title Date Description
        1 CHAMP Satellite Data 2009-12-31 Challenging Minisatellite Payload (CHAMP) is a German satellite mission dedicated to improving gravity and magnetic field models of the Earth.
        1 GEODAS magnetic data 2013-02-06 Trackline magnetics observations hosted on GEODAS at the National Geophysical Data Center (NGDC).
        1 INTERMAGNET Observatory Data 2009-12-31 Magnetics information that is collected at permanent surface magnetic observatories spread across the globe.
        1 ORSTED Satellite Data 2009-12-31 The Danish satellite Orsted is a dedicated satellite for geomagnetic field modeling.
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        LE_ProcessStep or LI_ProcessStep

        Count Component DateTime Description
        1 Measurements during daytime and during periods of strong solar activity are contaminated by external current systems, which are difficult to accurately model. Therefore, only nighttime data during magnetically quiet periods were used in estimating the WMM coefficients.
        1 Some contributions to the measured magnetic field, such as the diamagnetic effect of ionospheric plasma (L?hr et al, 2003) or motional induction by tidal ocean currents (Kuvshinov and Olsen, 2005; Maus, 2007), can be accurately modeled and were corrected for prior to the estimation of the WMM main field coefficients.
        1 To account for the contributions that have not been removed in the previous steps, an extended set of model parameters is co-estimated with the WMM model coefficients. These account for smaller-wavelength internal magnetic field contributions (spherical harmonic degree larger than 12), second time derivatives (secular acceleration) and contributions from currents external to the Earth. The set of WMM coefficients plus the extended model parameters is called a parent model of the WMM. Two different parent models were produced, reflecting different modeling strategies employed by NGDC for the main field model and BGS for the secular variation model.
        1 Satellite, marine, and aeromagnetic measurements were compiled into an ellipsoidal degree-720 magnetic model of the Earth's lithosphere. This model accurately represents the crustal field down to wavelengths of approximately 56 kilometers. This results in a higher pointing accuracy.
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        MI_Operation

        none found
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        MI_Platform

        none found
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        MI_Instrument

        none found
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