Boron isotope based carbon dioxide (CO2) data in combination with modelling indicates that dust-borne iron fertilization of the Southern Ocean during Mid-Pleistocene Transition glacial periods may have led to a decrease in glacial CO2 concentrations; further analyses of the CO2 record and sea-level data suggest that CO2 reductions due to iron fertilization may have yielded stronger and longer glaciations following the Mid-Pleistocene Transition, according to a study.
Article #17-02143: "Causes of ice age intensification across the Mid-Pleistocene Transition," by Thomas B. Chalk et al
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