Wait a minute: If by cutting other pollutants, we can reduce Arctic warming by 2/3, how much of the blame is left for carbon dioxide?

UN report: Cut soot, smog to limit climate change - StamfordAdvocate

Johan Kuylenstierna of the Stockholm Environment Institute, the report's chief author, said taking steps to cut black carbon and ground-level ozone over the next 20 years would "significantly slow" anticipated global warming, making a difference of 0.5 degree Celsius (0.9 F) by mid-century.

It also would avoid 2.5 million premature deaths every year from air pollution and would raise crop production by 50 million tons annually, he said.
...
Adopting such measures quickly would enhance the prospects of limiting the rise in global temperatures to 2 degrees Celsius (3.6 F) above preindustrial levels, the target set by international negotiators. One result would be a reduction in the projected warming of the Arctic over the next 30 by about two-thirds, it said.