I have been following this for years. Stories come out every few months about science finding new ones. here is one of many... try google... https://www.livescience.com/46194-volcanoes-melt-antarctic-glaciers.html Now, a new study finds that these subglacial volcanoes and other geothermal "hotspots" are contributing to the melting of Thwaites Glacier, a major river of ice that flows into Antarctica's Pine Island Bay. Areas of the glacier that sit near geologic features thought to be volcanic are melting faster than regions farther away from hotspots, said Dustin Schroeder, the study's lead author and a geophysicist at the University of Texas at Austin.
JAWS regarding heating from vents. 1. plenty of studies show that ocean tides have a lot to do with earth temps. 2. scientists are just now developing models on how oceans exchange heat through the tides. and they are not sure how much the vents and volcanoes impact the temps. but.. there are articles I have read which state that the Indian ocean has significantly more warming vents and volcanoes than were expected. here is one story for background... again google helps... so would a search of this site. http://news.nationalgeographic.com/news/2005/12/1212_051212_megaplume_2.html "A normal hydrothermal vent might produce something like 500 megawatts, while this is producing 100,000 megawatts. It's like an atom bomb down there."
and if you examine the data in your chart... you see the change in ocean temps precedes the change in atmopheric co2. you are also grafting instrument data onto proxies. Proxies are good for comparisons...not exact temperatures. Does a tree ring or ice core give you an exact temp. Here is a hint... recent tree ring data says we are cooler than the thermometers... so your side no claims tree rings recently stopped working. the peer reviewed studies we have show the sun and the tides in the ocean contribute to some or all the warming. What causes the ocean to warm? Logically it would be the sun and vents and volcanoes because our ocean has been warming since the last ice age. Man made co2 would not be doing that. warming the ocean drives the gas out of it. its really funny watching futurecurrents get triggered by science. its science fc not politics. you fight science with science.
Sadly, Libs and Progs are arrogant enough to think that they could affect climate change. That's really the larger point here. ----Even if CO2 were causing global warming, there is absolutely nothing that humans could do about it to change it. The Earth goes through temporary cycles of warmth and cool and this is natural. --Libs and Progs are wasting their time and ours bothering with it.