Bruce, give blind optimism credit where credit is due
COP29 starts in 23 days and finishes 22 November.
We will then have at least a few clues on how out-of-date is the
https://climateactiontracker.org/global/cat-thermometer/ although the final communique will no doubt be infested with the normal soothing platitudes.
The IEA forecasts on oil demand and LNG production capacity to 2035 are not inspiring, while the growth in electricity demand is so high that at the moment increases in solar and wind renewable energy seem to be largely stuck in catch-up mode
So on CO2 emissions the 2020's may well be mostly another lost decade.
Although the collapse of the Land CO2 sink in 2023 may be much to do with the El Nino effect, it is difficult to see anything other than long-term decline through what is euphemistically called "land use change".
And for luck add increasing severe weather events as the years roll by.
So CO2 atmospheric concentration will have two upward drivers at least for the remainder of this decade, unless the universal paradigm of unceasing GDP growth is broken. Retrieving the situation gets more difficult every day.