Here's what it probably meant to say:
- If global temperature reaches two degrees above the pre-industrial level (say, 1850) we'll be in bad, indeed catastrophic, trouble.
- If we can keep total greenhouse gas emissions to no more than 1,000 Gigatons of CO2, ever, then we have a 66% chance of keeping the temperature increase below two degrees.
- 119 countries have made pledges to reduce or reduce the growth in their greenhouse gas emissions.
- If all these countries keep their pledges and others follow their current trends then greenhouse gas emissions will keep rising until at least 2030. But they won't rise quite as much as they might have without the pledges.
- It's likely that by 2030 we will have emitted about 750 Gtons of CO2 and will be emitting about 57 Gtons per year.
- If emissions stop rising in 2030 and continue at the same rate we'll have emitted the whole 1,000 Gtons by 2035.
- If we start to reduce emissions in 2030 and do so by equal steps of 6 Gtons we'll have emitted the whole 1,000 Gtons by 2040.
The bottom line: The pledges are inadequate. Even if met they create a serious risk of catastrophic climate change.