gov.noaa.ngdc.mgg.geophysical_models:Declination_Calculator
service
Magnetic Grid
NOAA National Centers for Environmental Information
ncei.info@noaa.gov
https://www.ncei.noaa.gov/contact
NCEI Contact Information
Information for contacts at NCEI.
information
pointOfContact
2020-05-14
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
3
point
true
World Geodetic System 1984
WGS 84
2007-08-27
revision
https://epsg.org/crs_4326/WGS-84.html
WGS 84
GML of World Geodetic System 1984 coordinate reference system.
information
resourceProvider
European Petroleum Survey Group
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
publisher
urn:ogc:def:crs:EPSG::4326
Declination Calculator
2009-12-01
publication
NOAA National Centers for Environmental Information
NCEI Metadata ID: gov.noaa.ngdc.mgg.geophysical_models:Declination_Calculator
NOAA National Centers for Environmental Information
publisher
NCEI Geomagnetic Modeling Team
author
mapDigital
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.
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.
completed
historicalArchive
NOAA National Centers for Environmental Information
ncei.info@noaa.gov
https://www.ncei.noaa.gov/contact
NCEI Contact Information
Information for contacts at NCEI.
information
pointOfContact
NOAA National Centers for Environmental Information
NCEI Geomagnetic Modeling Team
geomag.models@noaa.gov
pointOfContact
asNeeded
https://www.ngdc.noaa.gov/geomag/img/DeclinationMap_US.png
Magnetic Declination map for North America for the year 2010
PNG
Earth Science > Solid Earth > Geomagnetism > Magnetic Field
Earth Science > Solid Earth > Geomagnetism > Magnetic Declination
theme
Global Change Master Directory (GCMD) Science Keywords
2020-01-09
publication
9.1
NASA Goddard Space Flight Center, Earth Science Data and Information System
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
custodian
Geographic Region > Global
place
Global Change Master Directory (GCMD) Location Keywords
2020-01-09
publication
9.1
NASA Goddard Space Flight Center, Earth Science Data and Information System
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
custodian
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
dataCentre
Global Change Master Directory (GCMD) Data Center Keywords
2020-01-09
publication
9.1
NASA Goddard Space Flight Center, Earth Science Data and Information System
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
custodian
otherRestrictions
Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
otherRestrictions
Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Produced by the NOAA National Centers for Environmental Information. Not subject to copyright protection within the United States.
otherRestrictions
Cite as: NCEI Geomagnetic Modeling Team. 2009: Declination Calculator. NOAA National Centers for Environmental Information. Accessed [date].
vector
eng; USA
geoscientificInformation
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
-180
180
-90
90
1900-01-01
2014-12-31
Individual Value
modelResult
Declination
180
-180
degree
NOAA National Centers for Environmental Information
ncei.info@noaa.gov
https://www.ncei.noaa.gov/contact
NCEI Contact Information
Information for contacts at NCEI.
information
distributor
In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
Contact NCEI for other distribution options and instructions.
HTML Format
1
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.
XML Format
1
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.
CSV Format
1
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.
PDF Format
1
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.
https://www.ncei.noaa.gov/metadata/geoportal/rest/metadata/item/gov.noaa.ngdc.mgg.geophysical_models:Declination_Calculator/html
HTTPS
Metadata Landing Page
information
https://www.ngdc.noaa.gov/geomag/calculators/magcalc.shtml#declination
HTTPS
Magnetic Declination Calculator
information
repository
NOAA National Centers for Environmental Information
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.
2015-04-22T00:00:00
service
User input of area of interest and time for desired data grid into a web interface.
User data is sent via HTTP request to a java servelet hosted on a local server. This checks that all of the necessary information to run the model executable correctly is present and in the correct format.
The server accesses a C executable, in this case the IGRF executable, and inputs the user data and runs the executable to obtain desired output parameters in XML format.
Processing steps were carried out collectively by the developers of the model. These developers are listed as authors of the associated paper "International Geomagnetic Reference Field: the eleventh generation".
IGRF11 Spherical Harmonic Model.
2010-10-12
publication
https://www.ngdc.noaa.gov/IAGA/vmod/igrf.html
Refer to technical report, "International Geomagnetic Reference Field: the eleventh generation", for description of algorithms.
The XML created by the executable is sent back to the server and input into the Java servelet which reformats the output into the format designated by the user at the begining of the process. This reformatted information is returned to the User's webpage.
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).
International Geomagnetic Reference Field 11
IGRF 11
2010-10-12
revision
International Association of Geomagnetism and Aeronomy (IAGA)
https://www.ngdc.noaa.gov/IAGA/vmod/igrf.html
International Geomagnetic Reference Field
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.
information
resourceProvider
Report on the Reference Field. Equations and coefficients for the eleventh generation. DOI: 10.1111/j.1365-246X.2010.04804.x
asNeeded
Modified for compliance to NCEI Template v1.2.