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
NCEI Metadata ID: gov.noaa.ngdc.mgg.geophysical_models:EMM2010
1 GEODAS magnetic data
    2013-02-06
1 GCMD Data Center Keywords Global Change Master Directory (GCMD) Data Center Keywords
    2020-01-09
1 GCMD Location Keywords Global Change Master Directory (GCMD) Location Keywords
    2020-01-09
1 GCMD Science Keywords Global Change Master Directory (GCMD) Science Keywords
    2020-01-09
1 INTERMAGNET Observatory Data
    2009-12-31
1 NOAA National Centers for Environmental Information
    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 https://epsg.org/crs_4326/WGS-84.html
    1 NCEI Geomagnetic Modeling Team author
    4 originator https://ngdc.noaa.gov/geomag/WMM/data/WMM2010/WMM2010_Report.pdf
    1 Brian Meyer Brian Meyer NOAA National Centers for Environmental Information Brian.Meyer@noaa.gov pointOfContact
    1 Danish Meteorological Institute originator http://www.space.dtu.dk/english/Research/Projects/Oersted
    1 EPSG Registry European Petroleum Survey Group publisher https://epsg.org/home.html
    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 Landing Page NASA Goddard Space Flight Center, Earth Science Data and Information System custodian https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords
    3 NCEI (pointOfContact) NOAA National Centers for Environmental Information ncei.info@noaa.gov pointOfContact https://www.ncei.noaa.gov/contact
    1 NOAA National Centers for Environmental Information publisher
    1 NCEI (distributor) NOAA National Centers for Environmental Information ncei.info@noaa.gov distributor https://www.ncei.noaa.gov/contact
    4 Geomagnetic Modeling Team (processor) NOAA National Centers for Environmental Information Geomagnetic Modeling Team geomag.models@noaa.gov processor http://www.ngdc.noaa.gov/geomag/
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    CI_OnlineResource

    Count Component Linkage Name Description Function
    1 http://geomag.colorado.edu/images/PublicationsPDFs/ngdc720.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.intermagnet.org INTERMAGNET Program Website provides information on participating institutions, observatory locations, and publications associated with the network of observatories. information
    4 http://www.ngdc.noaa.gov/geomag/
    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
    1 https://epsg.org/crs_4326/WGS-84.html WGS 84 GML of World Geodetic System 1984 coordinate reference system. information
    1 https://epsg.org/home.html 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
    3 https://ngdc.noaa.gov/geomag/WMM/data/WMM2010/WMM2010_Report.pdf
    3 https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information
    3 https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information
    1 https://www.ncei.noaa.gov/metadata/geoportal/rest/metadata/item/gov.noaa.ngdc.mgg.geophysical_models:EMM2010/html Metadata Landing Page information
    1 https://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 https://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 https://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 https://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 https://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 https://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 https://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 https://www.ngdc.noaa.gov/geomag/EMM/index.html EMM Home Page information
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    MD_Identifier or RS_Identifier

    Count Component Code
    1 NCEI Metadata ID: gov.noaa.ngdc.mgg.geophysical_models:EMM2010
    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 https://www.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 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 NCEI copyright Produced by the NOAA National Centers for Environmental Information. 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 (Lühr 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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