AR5 used the concept of solution space in its SPM Figure 8 . Several AR6 chapters, in particular Chapters 13, 14 and 18, use the concept to address challenges salient in AR6. In any assessment of solutions, what is feasible, effective and just depends not only on the potential solution itself but the particular biophysical and societal context in which it might occur . Solutions can also be space and time dependent because the biophysical and societal context can change over space and time . In addition, the large gap that exists between current climate action and that needed to meet policy goals suggests that decision makers may not only seek to implement available solutions but seek to actively expand the set of solutions . Finally, as used in this report, the concept of solution does not fully engage with questions of 'by whom?' and 'for whom?' In many cases solutions would necessarily be implemented by multiple, independent actors interacting with varying degrees of cooperation and competition .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report