The Global Climate Observing System (GCOS) is a co-sponsored programme which regularly assesses the status of global climate observations and produces guidance for its improvement.
It is co-sponsored by the
World Meteorological Organization (WMO),
Intergovernmental Oceanographic Commission of UNESCO (IOC-UNESCO),
United Nations Environment Programme (UN Environment), and
International Science Council (ISC).
GCOS expert panels maintain definitions of Essential Climate Variables (ECVs)....