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  2. Ocean acidification - Wikipedia

    en.wikipedia.org/wiki/Ocean_acidification

    Ocean acidification is now on a path to reach lower pH levels than at any other point in the last 300 million years. [83] [73] The rate of ocean acidification (i.e. the rate of change in pH value) is also estimated to be unprecedented over that same time scale. [84] [14] These expected changes are considered unprecedented in the geological record.

  3. Bjerrum plot - Wikipedia

    en.wikipedia.org/wiki/Bjerrum_plot

    Example Bjerrum plot: Change in carbonate system of seawater from ocean acidification.. A Bjerrum plot (named after Niels Bjerrum), sometimes also known as a Sillén diagram (after Lars Gunnar Sillén), or a Hägg diagram (after Gunnar Hägg) [1] is a graph of the concentrations of the different species of a polyprotic acid in a solution, as a function of pH, [2] when the solution is at ...

  4. File:Impacts of ocean acidification (NOAA EVL).webm

    en.wikipedia.org/wiki/File:Impacts_of_ocean...

    Initially, many scientists focused on the benefits of the ocean removing this greenhouse gas from the atmosphere. However, decades of ocean observations now show that there is also a downside — the CO 2 absorbed by the ocean is changing the chemistry of the seawater, a process called ocean acidification. This change in the ocean’s chemistry ...

  5. Effects of climate change on oceans - Wikipedia

    en.wikipedia.org/wiki/Effects_of_climate_change...

    There are several other factors that influence the atmosphere-ocean CO 2 exchange, and thus local ocean acidification. These include ocean currents and upwelling zones, proximity to large continental rivers, sea ice coverage, and atmospheric exchange with nitrogen and sulfur from fossil fuel burning and agriculture. [35] [36] [37]

  6. Carbonate compensation depth - Wikipedia

    en.wikipedia.org/wiki/Carbonate_compensation_depth

    Ocean acidification, which is also caused by increasing carbon dioxide concentrations in the atmosphere, will increase such dissolution and shallow the carbonate compensation depth on timescales of tens to hundreds of years.

  7. Ocean acidification in the Arctic Ocean - Wikipedia

    en.wikipedia.org/wiki/Ocean_acidification_in_the...

    It is believed that this high stress environment will cause ocean acidification factors to have a stronger effect on these organisms. It could also cause these effects to appear in the Arctic before it appears in other parts of the ocean. There is a significant variation in the sensitivity of marine organisms to increased ocean acidification.

  8. Marine pollution - Wikipedia

    en.wikipedia.org/wiki/Marine_pollution

    Ocean acidification is the ongoing decrease in the pH of the Earth's ocean. Between 1950 and 2020, the average pH of the ocean surface fell from approximately 8.15 to 8.05. [ 63 ] Carbon dioxide emissions from human activities are the primary cause of ocean acidification, with atmospheric carbon dioxide (CO 2 ) levels exceeding 422 ppm (as of ...

  9. Paleocene–Eocene Thermal Maximum - Wikipedia

    en.wikipedia.org/wiki/Paleocene–Eocene_Thermal...

    Evidence from the tropical Pacific Ocean suggests a minimum lysocline shoaling of around 500 m at the time of this hyperthermal. [91] Acidification may have increased the efficiency of transport of photic zone water into the ocean depths, thus partially acting as a negative feedback that retarded the rate of atmospheric carbon dioxide buildup. [92]