Lev­els of CO2 ‘are set to hit 3mil­lion-year high’

Metro (UK) - - TALK -

CAR­BON diox­ide lev­els are set to over­take those of the hottest pe­riod of the last 3.3mil­lion years by 2025, re­search has warned.

Dur­ing the Pliocene Epoch, the planet peaked at a record 3C warmer than to­day, as CO2 lev­els in the at­mos­phere reached 380 to 420 parts per mil­lion (ppm), a Univer­sity of Southamp­ton study of seabed fos­sils has found.

And to­day the at­mos­phere is back up to around 415 ppm, show­ing us ‘what is likely in store’ for the cli­mate.

Study co-au­thor Dr Thomas Chalk said: ‘Cur­rently, our CO2 lev­els are ris­ing at about 2.5 ppm per year, mean­ing that, by 2025, we will have ex­ceeded any­thing seen in the last 3.3mil­lion years.’

Newspapers in English

Newspapers from UK

© PressReader. All rights reserved.