According to Jean-Marc Jancovici (https://www.youtube.com/watch?v=IaQ-U-dP_7M https://www.youtube.com/watch?v=IaQ-U-dP_7M, in french though), this is right on t

According to Jean-Marc Jancovici (https://www.youtube.com/watch?v=IaQ-U-dP_7M https://www.youtube.com/watch?v=IaQ-U-dP_7M, in french though), this is right on the money: CO2 being extremly stable and given the quantity we already have transfered in the atmosphere, a 1.5°C global rise in temperature is inevitable already. We'd have to in the negative indeed to have a impact, and with the system inertia and the cascading effects, it's not even sure it would reverse the trend completly.