| Summary: | This chapter is a joint effort by natural and legal scientists to make the case for the dramatic consequences black carbon (BC) emissions mainly from outside the Arctic region have on the Arctic ecosystem, and how BC has recently become the specific focus of a regime complex. The authors provide scientific knowledge about the sources, pathways, and climate impacts of BC emissions, and stress the special relevance of possible near-immediate climate benefits from BC emission reduction in the Arctic. Further consideration is given to the crucial importance of the governance responses to these opportunities and challenges. Thus, the second part of the chapter critically discusses the status and prospects of current multilateral BC emission reduction efforts in the context of the Arctic Council, the International Maritime Organization, and the Convention on Long-range Transboundary Air Pollution.
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