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Scientific paper on ocean acidification, which takes the reader through the chemistry: https://co2coalition.org/wp-content/uploads/2021/11/2015-Cohen-Happer-Fu
by origin_path 4y ago
Scientific paper on ocean acidification, which takes the reader through the chemistry:
https://co2coalition.org/wp-content/uploads/2021/11/2015-Cohen-Happer-Fundamentals-of-Ocean-pH.pdf https://co2coalition.org/wp-content/uploads/2021/11/2015-Coh...
It states in summary that:
"doubling atmospheric CO2 from the current level of 400 ppm to 800
ppm only decreases the pH of ocean water from about 8.2 to 7.9. This is well within the day-night fluctuations that already occur because of photosynthesis by plankton"
"doubling atmospheric CO2 from the current level of 400 ppm to 800
ppm only decreases the carbonate-ion concentration, [CO2−3], by about 30%. Ocean
surface waters are already supersaturated by several hundred per cent for formation
of CaCO3 crystals from Ca2+ and CO2−3. So scare stories about dissolving carbonate
shells are nonsense."
"Over most of the Phanerozoic, the past 550 million years, CO2 concentrations in the atmosphere have been measured in thousands of parts per million, and life flourished in both the oceans and on land. This is hardly surprising, given the relative insensitivity of ocean pH to large changes in CO2 concentrations that we have discussed above, and given the fact that the pH changes that do occur are small compared to the natural variations of ocean pH in space and time"
"This minimalist discussion already shows how hard it is to scare informed people with ocean acidification, but, alas, many people are not informed."
If you or anyone else thinks this paper's calculations are wrong, then that would be interesting to learn why.
- deepdriver 4y agoThe "past 550 million years" includes the Permian-Triassic Extinction, or Great Dying, of 251 million years ago. Do they refer to the million-year death zone after this event as a period when "[CO2 was] measured in thousands of parts per million"? Seems like an incomplete analysis. Wikipedia claims, "[the] trigger for these mass extinctions appears to be a warming of the ocean caused by a rise of carbon dioxide levels to about 1000 parts per million": https://en.wikipedia.org/wiki/Anoxic_event#Atmospheric_effects https://en.wikipedia.org/wiki/Anoxic_event#Atmospheric_effec... Here's the Scientific American article they cited: https://www.scientificamerican.com/article/impact-from-the-deep/ https://www.scientificamerican.com/article/impact-from-the-d...