Alternate Views: Get Data, FAQ, ISO Rubric, CSW, HTML, Components, XML World Magnetic Model 2010 The World Magnetic Model is the standard model used by the U.S. Department of Defense, the U.K. Ministry of Defence, the North Atlantic Treaty Organization (NATO) and the International Hydrographic Organization (IHO), for navigation, attitude and heading referencing systems using the geomagnetic field. It is also used widely in civilian navigation and heading systems. The model, associated software, and documentation are distributed by NGDC on behalf of NGA. The model is produced at 5-year intervals, with the current model expiring on December 31, 2014. Get the Data Access Format(s) Distributor(s) / Contact Info Instructions / Constraints download WMM2010_Windows.zip World Magnetic Model (WMM2010) with the new C software and executables for Windows environment. download WMM2010_Linux.tar.zip World Magnetic Model (WMM2010) with new C software and executables for Linux environment. download WMM2010LegacyFortran.zip World Magnetic Model (WMM2010) with Fortran source code and executables for Windows and Linux environments. download WMM2010LegacyC.zip World Magnetic Model (WMM2010) with C source code and executables for Windows and Linux environments. download WMM2010GUI.zip World Magnetic Model (WMM2010) with Stand-alone Graphical User Interface (GUI) for Windows and C source code. WMM2010_Windows.zip Format version: 1 Format specification: World Magnetic Model (WMM2010) with the new C software and executables for Windows environment. WMM2010_Linux.tar.zip Format version: 1 Format specification: World Magnetic Model (WMM2010) with new C software and executables for Linux environment. WMM2010LegacyFortran.zip Format version: 1 Format specification: World Magnetic Model (WMM2010) with Fortran source code and executables for Windows and Linux environments. WMM2010LegacyC.zip Format version: 1 Format specification: World Magnetic Model (WMM2010) with C source code and executables for Windows and Linux environments. WMM2010GUI.zip Format version: 1 Format specification: World Magnetic Model (WMM2010) with Stand-alone Graphical User Interface (GUI) for Windows and C source code. Fees None Use Limitation Produced by the NOAA National Geophysical Data Center. Not subject to copyright protection within the United States. Legal Constraints