The latest survey of Atlantic Ocean conditions off Nova Scotia show after a decade of warming, temperatures on the Scotian Shelf are cooling.

The slight climate reversal has scientists asking if this is the beginning of a return to previous norms — or a blip.

"What remains unknown is whether this is a longer term trend or just short-term variability in our region," said Lindsay Beazley, a Fisheries and Oceans biologist and operational lead for the Maritimes Region Atlantic Zone Monitoring Program…