Description

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.

Resources

Name	Format	Description	Link
	0		https://www.ncei.noaa.gov/metadata/geoportal/rest/metadata/item/gov.noaa.ngdc:HDGM2022/html
	0	High Definition Geomagnetic Model (HDGM2023) is sent via secure file transfer protocol	https://www.ncei.noaa.gov/products/high-definition-geomagnetic-model
	0	Information for contacts at NCEI.	https://www.ncei.noaa.gov/contact
	0	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.	https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords
	0	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.	https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords
	0	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.	https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords

High Definition Geomagnetic Model 2023

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