View Historic Magnetic Declinations from 1590 to 2015 in mercator and polar projections (calculate declinations back to 1900)
Data from our Sun to Earth, Earth's sea floor and solid earth environment, and Earth observations from space.
The NGDC archive operates from the Open Archival Information System (OAIS) Framework
NGDC adds value to data through research, data modeling, and producing derived products.
Online calculators, Interactive Maps and Web Services facilitate access to data in the NGDC archive.
NGDC provides stewardship, products, and services for geophysical data from our Sun to Earth and Earth's sea floor and solid earth environment, including Earth observations from space.
We are active in many international programs, offering scientists around the world access to global databases through international exchange.
Learn more about NGDC's activities, mission, and organization.
NGDC is one of three National Environmental Data Centers operated by NOAA's Satellite and Information Service (NESDIS).