| Have the oceans' pH changed measurably? Is this a global change or localized to only some of the world's oceans? |
| Question Date: 2021-09-22 |
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Answer 1:
The oceans have changes about 0.05 to 0.1 pH units lower due to acidification. CO2 dissolves in water and forms carbonic acid H2CO3, the lowering of pH is across all oceans; the oceans are well mixed for the most part.
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Answer 2:
Yes, the oceans' pH has changed by roughly 0.1 pH units globally. This is indeed a global effect because the atmosphere is well-mixed: the carbon dioxide concentration is roughly the same everywhere, so the drop in pH is the same everywhere as well.
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Answer 3:
Yes, they have changed by 0.1 pH unit, according to the following links: link 1 . The oceans absorb carbon dioxide from the atmosphere: link 2 .
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