gov.noaa.ngdc.mgg.geophysical_models:US_Historic_Declination_Calculator20091201This programs derives a table of secular change in magnetic declination for a specified point in the conterminous United States. It utilizes the USD polynomial and the IGRF spherical harmonic models. Declination is shown to the nearest minute so that secular change may be properly illustrated, but it is usually only accurate to within 30 minutes.To aid the public in addition to the scientific community in proper navigation and positioning of historical events, as well as other scenarios not yet thought up by the National Geophysical Data Center in Boulder, CO.1750010120141231UnknownCompleteasNeeded-18018090-90NASA/GCMD Science KeywordsEARTH SCIENCE > Solid Earth > Geomagnetism > Magnetic FieldEARTH SCIENCE > Solid Earth > Geomagnetism > Magnetic DeclinationNASA/GCMD Location KeywordsGeographic Region > GlobalNoneUse Limitation: While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.; Use Limitation: Produced by the NOAA National Geophysical Data Center. Not subject to copyright protection within the United States.; DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of CommerceStefan Mausphysical and mailing 303-497-6522Stefan.Maus@noaa.govUnknown 20130617Brian MeyerDOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commercemailing and physical303-497-6125Brian.Meyer@noaa.govContent Standard for Digital Geospatial Metadata: Extensions for Remote Sensing MetadataFGDC-STD-012-2002