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| q | Among the changes in the distribution of ocean carbon that could
reduce glacial levels |
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| of atmospheric CO2 are: |
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| (1) fast downward
organic carbon pumping in areas of costal or tropical upwelling, |
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| (2) similar processes
in Antarctic, |
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| (3) changes in the
chemistry of Antarctic surface water toward higher CO3-2
content, |
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| (4) changes in the
chemistry of shallow subsurface water originating from southern |
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| latitudes. |
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