Global Atmosphere Watch finds that high greenhouse gas levels mark the start of new era of climate reality.

According to the latest WMO annual Greenhouse Gas Bulletin issued by the Global Atmosphere Watch, globally averaged concentration of carbon dioxide in the atmosphere reached the symbolic and significant milestone of 400 parts per million for the first time in 2015 and surged again to new records in 2016 on the back of the very powerful El Niño event.

Find WMO media release, find WMO Greenhouse Gas Bulletin.