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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
    2015-03-01
    1995-04-24
1 GCMD Location Keywords NASA/GCMD Location Keywords
    2015-03-01
    1995-04-24
1 GCMD Science Keywords NASA/GCMD Science Keywords
    2015-03-01
    1995-04-24
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 http://gcmd.nasa.gov/learn/keyword_list.html
4 originator http://ngdc.noaa.gov/geomag/WMM/data/WMM2010/WMM2010_Report.pdf
1 Anna Milan Anna Milan DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce Metadata Specialist Anna.Milan@noaa.gov pointOfContact
2 Brian Meyer Brian Meyer DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce Brian.Meyer@noaa.gov pointOfContact
1 NCEI (publisher) DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce publisher
3 Geomagnetic Modeling Team DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce NCEI Geomagnetic Modeling Team geomag.models@noaa.gov pointOfContact http://www.ngdc.noaa.gov/geomag/
1 DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce distributor http://www.ngdc.noaa.gov/geomag/EMM/index.html
1 NGDC Geomagnetic Modeling Team (originator) DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Geomagnetic Modeling Team geomag.models@noaa.gov originator http://www.ngdc.noaa.gov/geomag/
1 NGDC Geomagnetic Modeling Team (publisher) DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Geomagnetic Modeling Team geomag.models@noaa.gov publisher http://www.ngdc.noaa.gov/geomag/
4 Geomagnetic Modeling Team (processor) DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Geomagnetic Modeling Team geomag.models@noaa.gov processor http://www.ngdc.noaa.gov/geomag/
1 Danish Meteorological Institute originator http://www.space.dtu.dk/english/Research/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 publisher http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso
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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 http://gcmd.nasa.gov/learn/keyword_list.html GCMD's Science Keywords and Associated Directory Keywords This page describes the NASA GCMD Keywords, how to reference those keywords and provides download instructions. information
1 http://geomag.colorado.edu/images/PublicationsPDFs/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://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
1 http://www.space.dtu.dk/english/Research/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
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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 NOAA Disclaimer 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.
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.
1 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.
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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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