Unfortunately, even if we exceed and then bring temperature back to 1.5 degree over preindustrial, the damage has already been done. Many ecosystems and species will be lost, and many of the feedbacks (for example arctic sea ice) have hysteresis in them which will not get us to the same state even though nominally our temperature will be lower again. And because of hysteresis, larger reduction in CO2 might be required to get us back to 1.5 degrees.
That's why all this CO2 capture and drawdown using some kind of unspecified, new technology, is such a distraction. Ideally we shouldn't release the carbon in the first place.
That's why all this CO2 capture and drawdown using some kind of unspecified, new technology, is such a distraction. Ideally we shouldn't release the carbon in the first place.