World Magnetic Model

Calculate magnetic field at a given location and time according to the World Magnetic Model (WMM). Both the main field and secular variation components are returned. This functionality is useful for physicists and geophysicists who need orthogonal components from WMM. Currently, this package supports annualized time inputs between 2000 and 2020. If desired, users can specify which WMM version to use, e.g., the original WMM2015 release or the recent out-of-cycle WMM2015 release. Methods used to implement WMM, including the Gauss coefficients for each release, are described in the following publications: Chulliat et al (2019) , Chulliat et al (2015) , Maus et al (2010) < https://www.ngdc.noaa.gov/geomag/WMM/data/WMMReports/WMM2010_Report.pdf>, McLean et al (2004) < https://www.ngdc.noaa.gov/geomag/WMM/data/WMMReports/TRWMM_2005.pdf>, and Macmillian et al (2000) < https://www.ngdc.noaa.gov/geomag/WMM/data/WMMReports/wmm2000.pdf>.


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Reference manual

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install.packages("wmm")

1.0.0 by Will Frierson, a year ago


https://github.com/wfrierson/wmm


Report a bug at https://github.com/wfrierson/wmm/issues


Browse source code at https://github.com/cran/wmm


Authors: Will Frierson [aut, cre]


Documentation:   PDF Manual  


MIT + file LICENSE license


Suggests testthat, data.table


See at CRAN