Even if we are close to peaking emissions, we must consider the phenomenon of accumulation. Given that CO2 has an effective lifespan of around 100 years and methane about 10 years in the atmosphere, reductions in emissions now will still result in these gases accumulating and impacting the climate for decades to come.
No, even if you emit less, you are still 'accumulating', but at a slower rate. And previously released methane is still converting to co2 in the atmosphere, for decades to come.
No they won't. Only the first derivative of greenhouse gases ('emissions') will peak. Greenhouse gases itself will only peak after the world achieves net-zero.
Since you're being pedantic, greenhouse gases don't have an infinite lifetime in the atmosphere so they will start going down slightly before we hit net-zero.
I hope most understood that I meant to say peak greenhouse gas emissions.
And ironically decreasing coal and fuel pollution decreases albedo causing faster warming which will persist for a few decades until things balance out. Less pollution is good, particularly when it comes to reductions in sulphur dioxide from bunker fuel and PM2.5 from coal emissions, but it does have side effects amounting to a couple of degrees Celsius of warming according to recent papers. Hanson's "Global Warming in the Pipeline" is a sobering read.
https://climateanalytics.org/comment/will-2024-be-the-year-e...