The Global Geophysical Fluids Center (GGFC) of the International Earth Rotation and Reference Systems Service

The International Earth Rotation Service established a Global Geophysical Fluids Center (GGFC) in 1998, as one if its product centers. The purpose is to better support, facilitate, and provide services to the worldwide research community, in areas related to the variations in Earth rotation, gravity field and geocenter that are caused by mass transport in the geophysical fluids including the atmosphere, ocean, solid Earth, and core, and geophysical processes associated with tides, mass loading, and hydrological cycles. These services are administered through GGFC’s Special Bureaus (SB). Today there are eight SBs worldwide; they are SB Atmosphere, SB Oceans, SB Tides, SB Hydrology, SB Mantle, SB Core, SB Gravity/Geocenter, and SB Loading. They maintain individual data archive and services.