There is such an over abundance of well documented effects of global warming in relation to ocean acidification, melting glaciers and ice sheets, melting permafrost and oceanic hydrate, etcetera that unless someone has been hiding ‘under a rock’ all of their lives, they know that ‘climate change’ is upon us and that greenhouse gas levels are not decreasing. The oceans have, thus far, been absorbing most of the heat and the CO2, hence ocean acidification.
https://www.ucsusa.org/global-warming/global-warming-impacts/co2-ocean-acidification
However, warmer water can hold less dissolved gases and will someday be off gassing. This is but one of a variety of tipping points that will converge as a consequence of higher than normal CO2 levels.
Search:
global warming tipping points
Wikipedia:
https://en.m.wikipedia.org/wiki/Tipping_points_in_the_climate_system#Tipping_points_for_global_temperature
Environmental Defense
http://blogs.edf.org/climate411/2017/11/01/everything-you-need-to-know-about-climate-tipping-points/
