High Definition Geomagnetic Model 2021 Real-Time Disturbance Calculator
A map showing the magnetospheric component of the Earth's magnetic field calculated by the HDGM-RT with an inset of a declination line chart from the Honolulu observatory.
The High Definition Geomagnetic Model (HDGM) is a global, high resolution model of the Earth's geomagnetic main and crustal field, providing magnetic field values (total field, dip, and declination) at any point above or below the Earth's surface. Well planners can use HDGM to compute magnetic reference values at any point, as well as easily integrate HDGM into their directional drilling software. HDGM is updated annually to correctly model secular changes in the geomagnetic field. The US National Oceanic and Atmospheric Administration (NOAA), in partnership with the directional drilling industry and the University of Colorado have developed a real-time component for NOAA's High Definition Geomagnetic Model. HDGM-RT improves the HDGM by accurately modeling the magnetic fields originating in the Earth's magnetosphere in real-time using a combination of solar-wind observing satellites situated between Earth and sun and a chain of geomagnetic observatories on the Earth's surface. The model also includes an ionospheric field model calculated from a combination of observatory and Swarm satellite data in order to represent the daily variations in the ionosphere. The addition of HDGM RT can save rig-time and reduce the drilling cost by enabling improved drill string interference correction during adverse space weather conditions.
- Cite as: NCEI Geomagnetic Modeling Team. 2020: High Definition Geomagnetic Model 2021 Real-Time Disturbance Calculator. NOAA National Centers for Environmental Information. Accessed [date].
- NCEI Metadata ID: gov.noaa.ngdc:HDGM2022-RT
gov.noaa.ngdc:HDGM2022-RT
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Ordering Instructions | Contact NCEI for other distribution options and instructions. |
Distributor | NOAA National Centers for Environmental Information
ncei.info@noaa.gov |
Dataset Point of Contact | NOAA National Centers for Environmental Information
ncei.info@noaa.gov |
Dataset Point of Contact | NCEI Geomagnetic Modeling Team
NOAA National Centers for Environmental Information geomag.models@noaa.gov |
Time Period | 1900-01-01 to 2022-01-01 |
Spatial Reference System | urn:ogc:def:crs:EPSG::4326 |
Spatial Bounding Box Coordinates |
N: 90
S: -90
E: 180
W: -180
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Edition | 1 |
Data Presentation Form | mapDigital
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Dataset Progress Status | Complete - production of the data has been completed
Historical archive - data has been stored in an offline storage facility |
Data Update Frequency | As needed - Associated HDGM2022-RT software may be updated as improvements are created. |
Purpose | This data is available to the public for a wide variety of uses including scientific research and analysis. |
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Theme keywords | Global Change Master Directory (GCMD) Science Keywords
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Data Center keywords | Global Change Master Directory (GCMD) Data Center Keywords
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Place keywords | Global Change Master Directory (GCMD) Location Keywords
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Other Constraints | Cite as: NCEI Geomagnetic Modeling Team. 2020: High Definition Geomagnetic Model 2021 Real-Time Disturbance Calculator. NOAA National Centers for Environmental Information. Accessed [date]. |
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Last Modified: 2021-11-15T20:27:02
For questions about the information on this page, please email: ncei.info@noaa.gov