Nature Communications 7: Article number: 10525; DOI: 10.1038/ncomms10525 (2016); Published: January 22 2016; Updated: November 17 2016
The authors wish to add ‘Mads H. Ribergaard' and ‘John Mortensen' to the author list of this Article for the provision of oceanographic data. This has now been updated in both the PDF and HTML versions of the Article.