The possibility that a similar effect might occur in the Northern Hemisphere has been
debated, but
despite considerable variation in ozone levels in the Arctic, they had not reached the extremes seen in the south.
Interestingly, beyond this,
despite considerable rhetoric about moving beyond
debates about carbon - pricing, the report recommends that in order to avoid adding to the Federal debt, it would be necessary to impose new taxes, including increased royalties for oil and gas extraction, a tax on imported oil, a tax on electricity sales, and a «very small carbon price» (presumably from a modest carbon tax or unambitious cap - and - trade system).