What does GT stand for?

8 gigatonnes [billion tonnes of carbon dioxide], and China would cut by around one gigatonne.

8 gigatonnes of carbon per year, slow the rise of atmospheric carbon levels and forestall anticipated climate change damage.

2] emissions by 2050 to 20 gigatonnes - which still means industrialised nations like Britain cutting back dramatically to elsewhere.

Under a scenario where global carbon dioxide emissions are capped at 450 parts per million (ppm), HFC emissions could reach nine gigatonnes --equivalent to around 45 per cent of total C[O.

Together, these can hold hundreds to thousands of gigatonnes of carbon (GtC), and the technology to inject C[O.

Tim's section on using forests to sequester carbon is fair enough, except that he compares the potential storage amounts with the existing amount in the atmosphere (200 gigatonnes of carbon, or GtC), rather than with the amounts likely to be injected into the atmosphere by 2100 under so-called business-as-usual scenarios, which range from 770 to 2540 GtC.

It says that, on current trends, greenhouse gas emissions will rise by 45% to 41 gigatonnes (Gt) in 2030, with three-quarters of the increase coming from China, India and the Middle East as urbanisation there grows exponentially.

6 gigatonnes representing 70 per cent of Canada's reserves.