Changes made to the WMM Code
Note: the download code will always be the latest version
25 November 2005 - Version 2 Posted
Due to the number of changes made to the software, NGDC is releasing a version 2 of the code. The download file is the latest version.
Changes include:
- Spelling corrections in help text and input prompts
- Warnings added for undefined declination at / near magnetic poles
- Resolution of results consistent across all programs
- Clarified input to indicate height is above mean sea level using the WGS84 reference ellipsoid
- Corrected elevation bug in the Fortran grid program
Changes made in the Version 2 software are listed in the change
document (pdf)
5 April 2005
C Software bug fixes:
1) Fixed inclination reporting (erroniously reported as positive upwards)
2) Fixed problem reading input which led to a memory leak and program fail when compiled with gnu compilers
15 December 2004
Changes: As of 2000, the model produced and distributed from the Web has been named "wmm.cof", with the model epoch contained in the header of the model. The current model has an additional change to be compliant with Y2K. The publication date of the model, as
shown in the first line (header) of the model is now a four-digit year. There are no changes in the format of the coefficients.
2005.0 WMM-2005 10/18/2004
rather than
2000.0 WMM-2000 10/28/99
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