Global Sea Level Observing System (GLOSS) What is GLOSS? The
Global Sea Level Observing System (GLOSS) is an international
programme aiming to establish high quality global and regional
sea level measurement networks for application to climate,
oceanographic and coastal sea level research. The programme
became known as GLOSS as it provides data for deriving the
'Global Level of the Sea Surface'. The main component of GLOSS
is the 'Global Core Network' (GCN) of 290 sea level stations
around the world for long-term climate change and oceanographic
sea level monitoring. The present definition of the GCN (the
definition is modified every few years) is called GLOSS02. GLOSS
is conducted under the auspices of the Joint WMO/IOC Commission
for Oceanography and Marine Meteorology (JCOMM) of the World
Meteorological Organization (WMO) and the Intergovernmental
Oceanographic Commission (IOC). BODC’s role in GLOSS BODC is
responsible for maintaining the GLOSS Station Handbook, which
was constructed in order to provide fu