GCOS Milestone Conclusions, Resolutions and Decisions (1997 – 2019)

This document provides a detailed timeline and record of milestones, decisions, and events related to the Global Climate Observing System (GCOS) from 1997 to 2019. 

It includes a chronological record of how GCOS has developed and been shaped by various international bodies and climate agreements over more than two decades. It offers insight into the governance, planning processes, and key outputs of GCOS as a critical component of global climate observation efforts.