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The ITRS Combination Centres are responsible for providing ITRF products by combining inputs from the Technique Centres and other contributors. These products are provided to the ITRS Center . The ITR

The IERS provides data on Earth orientation, the International Celestial Reference System/Frame (ICRS/ICRF), the International Terrestrial Reference System/Frame (ITRS/ITRF), and geophysical fluids. I

Web site https://www.jpl.nasa.gov/site/jsgt/jtrf/ See also Annual Report 2013: 3.6.3 ITRS Combination Centre - JPL (not accessible) [PDF, 643 KB] Annual Report 2014: 3.6.3 ITRS Combination Centre - JP

Web site http://itrf.ign.fr/ See also Annual Report 2001: 3.6.1.2 ITRS Combination Centre - IGN (not accessible) [PDF, 128 KB] Annual Report 2002: 3.6.1.2 ITRS Combination Centre - IGN (not accessible

Mission The International GNSS Service (IGS) is a service of the International Association of Geodesy (IAG), officially established in August 1993 at the IUGG General Assembly in Beijing, China. It pr

Mission The International DORIS Service (IDS) is an international service that provides support, through DORIS data and products, to geodetic, geophysical, and other research and operational activitie

Mission Within the IERS Global Geophysical Fluids Center the Special Bureau for the Atmosphere (SBA) is a joint effort of Atmospheric and Environmental Research Inc. (AER) and the U.S. National Center

Mission Within the IERS Global Geophysical Fluids Center the Special Bureau for Hydrology (SBH) provides data sets and numerical model results related to the changing distribution of water over the pl

Mission The Global Geophysical Fluids Center (GGFC) was established by the International Earth Rotation and Reference Systems Service (IERS). Three operational special Bureaus (SB) have been selected,