NNVL / NOAA / SCIENCE PHOTO LIBRARY NNVL / NOAA / SCIENCE PHOTO LIBRARY
Ocean-atmosphere CO2 exchange, 1861-2100. Animated dataset on an Earth map showing the rate of exchange of carbon dioxide (CO2) between the ocean and the atmosphere from 1861 to 2100. In areas where the concentration of CO2 is higher in the air than the water, C02 is absorbed by the oceans (green). In areas where the concentration of CO2 is higher in the water than the air, CO2 is released to the atmosphere (blue). Colder water can absorb more C02 than warm water, leading to sinks at the poles. As atmospheric CO2 levels increase with the burning of fossil fuels, larger areas will become absorbing regions. Absorption of CO2 by the oceans causes them to become more acidic. By 2100, much of the global ocean is expected to be a sink of CO2 from the atmosphere. This computer model is based on past records and predictions for future levels (CMIP5, 2010-14) from the Intergovernmental Panel on Climate Change.
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