> Wouldn’t this make it far less concerning than CO2 with its half life of 120 years? In the pre-industrial era the oceans outgassed CO2 to the atmosphere to

> Wouldn’t this make it far less concerning than CO2 with its half life of 120 years? In the pre-industrial era the oceans outgassed CO2 to the atmosphere to prevent land plants from suffocating themselves by sequestering all the carbon dioxide. In the post-industrial era the oceans capture a significant percentage of the CO2 that humans generate (because CO2 is heavier than air, and easily dissolves in water). The most important considerations for the earth's atmospheric heat balance are the heat inputs from the sun (solar cycle) and underwater volcanoes, and the shielding provided by volcanic eruptions. The oceans store heat during the summer, and release heat during the winter. My previous comments: https://news.ycombinator.com/item?id=20002823 https://news.ycombinator.com/item?id=20002823 / https://news.ycombinator.com/item?id=20013166 https://news.ycombinator.com/item?id=20013166