Declination Calculator

Dataset Identification:

Resource Abstract:
Declination is calculated using the current International Geomagnetic Reference Field (IGRF) model. Declination is calculated using the current World Magnetic Model (WMM) or International Geomagnetic Reference Field (IGRF) model. While results are typically accurate to 30 minutes of arc, users should be aware that several environmental factors can cause disturbances in the magnetic field.
Citation
Title Declination Calculator
publication  Date   2009-12-01
presentationForm  mapDigital
cited responsible party - publisher
organisation Name  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
cited responsible party - pointOfContact
organisation Name  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
position Name NCEI Geomagnetic Modeling Team
Contact information
Address
electronic Mail Address geomag.models@noaa.gov
Linkage for online resource
URL: http://www.ngdc.noaa.gov/geomag/
cited responsible party - distributor
organisation Name  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Contact information
Linkage for online resource
URL: https://www.ngdc.noaa.gov/geomag-web/#declination
Topic Category:  geoscientificInformation
Keywords:
Theme keywords (theme):
EARTH SCIENCE > Solid Earth > Geomagnetism > Magnetic Field
EARTH SCIENCE > Solid Earth > Geomagnetism > Magnetic Declination
thesaurus name >
Title Global Change Master Directory (GCMD) Science and Services Keywords
revision  Date   2016-09-13
publication  Date   1995-04-24
Edition 8.4.1
cited responsible party - publisher
organisation Name  NASA
position Name GCMD User Support Office
Contact information
Address
electronic Mail Address gcmduso@gcmd.gsfc.nasa.gov
Linkage for online resource
name GCMD Feedback Form
URL: http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso
link function information
Description Have a Comment for the GCMD?
cited responsible party -
organisation Name  
Contact information
Linkage for online resource
name GCMD's Science Keywords and Associated Directory Keywords
URL: http://gcmd.nasa.gov/learn/keyword_list.html
link function information
Description This page describes the NASA GCMD Keywords, how to reference those keywords and provides download instructions.
Location keywords:
Geographic Region > Global
thesaurus name >
Title Global Change Master Directory (GCMD) Location Keywords
revision  Date   2016-12-01
publication  Date   1995-04-24
Edition 8.4.1
cited responsible party - publisher
organisation Name  NASA
position Name GCMD User Support Office
Contact information
Address
electronic Mail Address gcmduso@gcmd.gsfc.nasa.gov
Linkage for online resource
name GCMD Feedback Form
URL: http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso
link function information
Description Have a Comment for the GCMD?
cited responsible party -
organisation Name  
Contact information
Linkage for online resource
name GCMD's Science Keywords and Associated Directory Keywords
URL: http://gcmd.nasa.gov/learn/keyword_list.html
link function information
Description This page describes the NASA GCMD Keywords, how to reference those keywords and provides download instructions.
dataCenter Keywords
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
thesaurus name >
Title Global Change Master Directory (GCMD) Data Center Keywords
revision  Date   2016-12-01
publication  Date   1995-04-24
Edition 8.4.1
cited responsible party - publisher
organisation Name  NASA
position Name GCMD User Support Office
Contact information
Address
electronic Mail Address gcmduso@gcmd.gsfc.nasa.gov
Linkage for online resource
name GCMD Feedback Form
URL: http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso
link function information
Description Have a Comment for the GCMD?
cited responsible party -
organisation Name  
Contact information
Linkage for online resource
name GCMD's Science Keywords and Associated Directory Keywords
URL: http://gcmd.nasa.gov/learn/keyword_list.html
link function information
Description This page describes the NASA GCMD Keywords, how to reference those keywords and provides download instructions.
Theme keywords (theme):
Magnetic
Magnetic Field
Centered
thesaurus name >
Title Property > Measure
publication  Date   2018-12-15
other Citation Details  Cinergi keyword enhanced.File generated at Sat Dec 15 04:53:27 UTC 2018
Theme keywords (theme):
Geophysics
Geography
thesaurus name >
Title Science Domain > Earth Science
publication  Date   2018-12-15
other Citation Details  Cinergi keyword enhanced.File generated at Sat Dec 15 04:53:27 UTC 2018
Theme keywords (theme):
DOC/NOAA/NESDIS/NGDC
NOAA
thesaurus name >
Title Organization > GOVERNMENT AGENCIES-U.S. FEDERAL AGENCIES
publication  Date   2018-12-15
other Citation Details  Cinergi keyword enhanced.File generated at Sat Dec 15 04:53:27 UTC 2018
Theme keywords (theme):
National Centers for Environmental Information
U.S. Department of Commerce
thesaurus name >
Title Virtual International Authority File (VIAF) Corporate Names
publication  Date   2018-12-15
other Citation Details  Cinergi keyword enhanced.File generated at Sat Dec 15 04:53:27 UTC 2018
Theme keywords (theme):
Current
Environmental Factor
Disturbance
thesaurus name >
Title Feature > Marine Feature
publication  Date   2018-12-15
other Citation Details  Cinergi keyword enhanced.File generated at Sat Dec 15 04:53:27 UTC 2018
purpose:
The purpose of the calculators is to deliver trusted magnetic field values - past, present, and near future - to aid the public as well as the scientific community in proper navigation, positioning, and other operational and research magnetic field scenarios.
Browse image (thumbnail):
thumbnail file name:  ...
file type: PNG
thumbnail file description:  Magnetic Declination map for North America for the year 2010
Resource language:  eng; USA
Resource progress code:  completed
Resource Maintenance Information
maintenance or update frequency:  asNeeded
Constraints on resource usage:
Constraints
Use limitation statement:
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.
Constraints on resource usage:
Constraints
Use limitation statement:
Produced by the NOAA National Geophysical Data Center. Not subject to copyright protection within the United States.
Spatial representation type code:  vector
Resource extent
Extent description
The IGRF is a global model that extends back to the begining of the 20th Century and is updated every 5 years to include a forcast model for the following 5 years using observations of the Earth's magnetic field over time to interpolate
Geographic Extent
Geographic Bounding Box
westBoundLongitude  -180
eastBoundLongitude  180
northBoundLatitude  90
southBoundLatitude  -90
Temporal Extent
1900-01-01 2014-12-31
point of contact - pointOfContact
organisation Name  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
position Name NCEI Geomagnetic Modeling Team
Contact information
Address
electronic Mail Address geomag.models@noaa.gov
Linkage for online resource
URL: http://www.ngdc.noaa.gov/geomag/
Back to top:

Grid spatial representation

number of grid dimensions: 3
Grid axis property:
cell geometry type:  point
transformation parameter availability:  true
Back to top Individual Value modelResult
Band
descriptor Declination
Long Wavelength  180
Short Wavelength  -180
units

Reference system information

Reference System Identifier
Identifier string: urn:ogc:def:crs:EPSG::4326
authority
Title World Geodetic System 1984
alternateTitle  WGS 84
revision  Date   2007-08-27
cited responsible party - resourceProvider
organisation Name  
Contact information
Linkage for online resource
name WGS 84
URL: http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:crs:EPSG::4326
link function information
Description GML of World Geodetic System 1984 coordinate reference system.
cited responsible party - publisher
organisation Name  European Petroleum Survey Group
Contact information
Linkage for online resource
name European Petroleum Survey Group Geodetic Parameter Registry
URL: http://www.epsg-registry.org/
link function search
Description Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured dataset of Coordinate Reference Systems and Coordinate Transformations.
Back to top

Scope of quality information
scope level  repository
Level Description
other component described  NOAA National Centers for Environmental Information
Resource lineage description

Scope of quality information
scope level  service
Resource lineage description
source
source description  The IGRF is the product of a collaborative effort between magnetic field modellers and the institutes involved in collecting and disseminating magnetic field data from satellites and from observatories and surveys around the world. The IGRF is a series of mathematical models of the Earth's main field and its annual rate of change (secular variation).
source citation
Title International Geomagnetic Reference Field 11
alternateTitle  IGRF 11
revision  Date   2010-10-12
other Citation Details  Report on the Reference Field. Equations and coefficients for the eleventh generation. DOI: 10.1111/j.1365-246X.2010.04804.x
cited responsible party - resourceProvider
organisation Name  International Association of Geomagnetism and Aeronomy (IAGA)
Contact information
Linkage for online resource
name International Geomagnetic Reference Field
URL: https://www.ngdc.noaa.gov/IAGA/vmod/igrf.html
link function information
Description The International Association of Geomagnetism and Aeronomy (IAGA) has released the 11th Generation International Geomagnetic Reference Field, which is the latest version of a standard mathematical description of the Earth's main magnetic field that is used widely in studies of the Earth's deep interior, its crust and its ionosphere and magnetosphere.

Resource distribution information

Distributor
distributor contact - pointOfContact
organisation Name  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
position Name NCEI Geomagnetic Modeling Team
Contact information
Address
electronic Mail Address geomag.models@noaa.gov
Linkage for online resource
URL: http://www.ngdc.noaa.gov/geomag/
Standard ordering process
fees None
Format
Format name HTML Format
Format version 1
specification > The Declination Calculator creates an HTML pop-up window which superimposes a compass rose, indicating the declination, onto the location queried and reports the annual change in declination.
Distributor
distributor contact - pointOfContact
organisation Name  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
position Name NCEI Geomagnetic Modeling Team
Contact information
Address
electronic Mail Address geomag.models@noaa.gov
Linkage for online resource
URL: http://www.ngdc.noaa.gov/geomag/
Format
Format name XML Format
Format version 1
specification > The Declination Calculator creates an XML file which reports the location and date queried as well as the declination and the annual change in declination in decimal minutes per year.
Distributor
distributor contact - distributor
organisation Name  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Contact information
Address
electronic Mail Address geomag.models@noaa.gov
Linkage for online resource
URL: https://www.ngdc.noaa.gov/geomag-web/#declination
Format
Format name CSV Format
Format version 1
specification > The Declination Calculator creates an Comma Seperated Variable (CSV) file which reports the location and date queried as well as the declination and the annual change in declination in decimal minutes per year.
Distributor
distributor contact - distributor
organisation Name  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Contact information
Address
electronic Mail Address geomag.models@noaa.gov
Linkage for online resource
URL: https://www.ngdc.noaa.gov/geomag-web/#declination
Format
Format name PDF Format
Format version 1
specification > The Declination Calculator creates a Portable Document Format file (PDF) file which reports the location and date queried as well as the declination and the annual change in declination in decimal minutes per year.
Distributor
distributor contact - distributor
organisation Name  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Contact information
Address
electronic Mail Address geomag.models@noaa.gov
Linkage for online resource
URL: https://www.ngdc.noaa.gov/geomag-web/#declination

Metadata data stamp:  2015-08-31
Resource Maintenance Information
maintenance or update frequency:  annually
notes: Last Review Date: 2014-05-08
notes: This record has been automatically modified to include references to NCEI where applicable on 2015-08-31.
Metadata contact - pointOfContact
individual Name Brian Meyer
organisation Name  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Contact information
Telephone
Voice 303-497-6125
Address
electronic Mail Address Brian.Meyer@noaa.gov
Metadata scope code  service
Metadata hierarchy level name:  Magnetic Grid
Metadata language  eng; USA
Metadata character set encoding:   utf8
Metadata standard for this record:  ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
standard version:  ISO 19115-2:2009(E)
Metadata record identifier:  gov.noaa.ngdc.mgg.geophysical_models:Declination_Calculator

Metadata record format is ISO19139-2 XML (MI_Metadata)