The article says that there is a report by a research group on study of data based on 700 year old coral reefs, and that one member of the group says that the Labrador Current has been dominant for nearly 2,000 year ~ it never says that that remark by that member of the group is based on the results of this study alone.

According to that dating, the establishment of the Labrador current would be around the time of the zenith of the Roman Empire, and if that dating is correct, the early centuries of the establishment of the Labrador Current was the Age of Migrations.

I've been accused of being a Marxist, yet while Harpo's my favourite, it's Groucho I'm always quoting. Odd, that.