Foreword

This seminal report explores critical components of the global climate between 2011 and 2020. Taking a longerterm perspective than annual reports, the Decadal Report transcends interannual variability, highlighting, for example, how each decade since the 1990s has been warmer than the previous one. It shows without a doubt that green-house gas concentrations have increased in the atmosphere, thereby contributing to record levels of warming of the land and ocean, the melting of ice sheets and glaciers, rising sea levels, and ocean acidification.

Sustainable Development Goals:

Climate Action