GCOS works towards a world where climate observations are accurate and sustained, and access to climate data is free and open.


The Global Climate Indicators are a set of …

This plan was published in 2016 and describes…


River discharge data are now available online

The Global Runoff Database of quality controlled “historical” mean daily and monthly discharge data has developed into the most comprehensive global river discharge data archive supporting climate-related programs and projects of the United Nation

GCOS Certificate of Recognition

At a recent WMO meeting for recognising long-term observing stations (November 2019), the opportunity was taken to present a GCOS Certificate of Recognition to Mr CM Shun, Director of the Hong Kong Observatory, for the ongoing operations of the Ki