Petteri Taalas, secretary-General of the World Metheorological Organization, an institute depending of the UN has said that levels of CO2 in the atmosphere have surged past an important threshold and may not dip below it for ”many generations”.
The 400 parts per million benchmark was broken globally for the first time in recorded history in 2015.
But according to the World Meteorological Organisation (WMO), 2016 will likely be the first full year to exceed the mark
Prior to 1800 atmospheric levels were around 280ppm, according to the US National Oceanic And Atmospheric Administration (Noaa).
The WMO says that the rise through the 400ppm barrier has persisted and it’s likely that 2016 will be the first full year when the measurements show CO2 above that benchmark, and ”hence for many generations”.