Cooperative Institute for Research in Environmental Sciences (CIRES)
World Magnetic Model (WMM)
standardmodel standardIndustry: Aerospace
- Category
- Data & Digital Tools
- Affiliations
- CIRES; NOAA Boulder (host); NOAA Boulder
Description
The standard model for navigation, attitude and heading referencing systems that use the geomagnetic field, also used in civilian navigation. Updated every five years; the current WMM2025 was released December 17, 2024 and expires December 31, 2029. Produced by NGA and the UK DGC and developed jointly by NCEI and BGS, with coefficient files, Windows/Linux C software and documentation.
Official page
https://www.ncei.noaa.gov/products/world-magnetic-model
Open official page (opens in a new tab)Access
- Access summary
- download
- Download or access
- https://www.ngdc.noaa.gov/geomag/WMM/soft.shtml#downloads
Contact
- General contact
- geomag.models@noaa.gov
Details
- Keywords
- magnetic navigation, heading reference systems, magnetic pole wandering, coefficient files, c software library, error model
- Location
- Boulder, Colorado
- Standard id
- WMM2025
- Issuing body
- National Geospatial-Intelligence Agency (NGA); UK Defence Geographic Centre (DGC)
- Associated entity
- National Centers for Environmental Information (NCEI)
- Specifications
- Latitude: -90.00 to +90.00 degrees | Longitude: -180.00 to +180.00 degrees