There is less than a year of data about the amount of energy put into the ocean by the Juan de Fuca ridge [1], and only classified data about other oceanic volcanic hotspots (this was collected by the navy's submarines). I think the certainty expressed by advocates for anthropogenic climate change is not justified.<p>[1] <a href="http://nytimes.com/2016/01/12/science/midocean-ridges-volcano-underwater.html" rel="nofollow">http://nytimes.com/2016/01/12/science/midocean-ridges-volcan...</a>