It's been reduced before through cracking down on pollution. The results are directly suspected to be responsible for an increase in warming rate, both locally and worldwide. The only way in which it would be necessary to keep releasing it, and in increasingly higher quantities, is only if no other measure or action is taken, which is obviously not the intended goal: its purpose is to make up for the damage already done that will linger for longer than anyone currently alive.

The emission reductions in our simulations correspond closely to the emissions reductions realized in East Asia over the period 2010–2023, in magnitude and geographical location. This allows us to put our results in the context of the recent uptick in the observed rate of global mean surface warming. Here, we find that emissions reductions in East Asia have contributed up to 0.05 °C/decade since 2010, explaining a large fraction of the observed increase of 0.06 °C/decade over the same period, after filtering out the effects of interannual variability. (from https://www.nature.com/articles/s43247-025-02527-3)