anonymous question, addition to the previous answer
If a certain community agrees on what climate is optimal for it and has the means to establish these conditions, its representative simply takes the climate control remote and sets the required parameters. If there are no means to establish an arbitrary climate, people either migrate to more acceptable climatic conditions or adapt to the existing ones. If there are means but no agreement, then whoever holds the remote will, one way or another, set parameters that satisfy some and dissatisfy others.
To study the causes and effects of climate change, one can ask: a) who influenced the changes that occurred and to what extent; b) who suffered what damage as a result. But in fact, a different question is of interest: is it possible to organize joint activity so that the degradation of the established system of consumption of goods does not occur, and if so, how.
The current level of human development allows for direct steering of the climate approximately at the regional level: creating a large reservoir, for example, or, conversely, dividing a river into irrigation ditches. Which approaches to organizing the operation of common resources work more or less in the interests of the operators is analyzed in a book that I have already recommended: Elinor Ostrom, “Governing the Commons”.
If it is not possible to design a scheme for the operation of common resources according to the principles she derived, then the best thing that can be done is to give up and eliminate regulation entirely: in systems too complex for direct management, only the free market can bring order.
Global climate changes, certainly, still fall into this category.
