Supplementary Information: The importance of Antarctic-Subantarctic surface mixing in establishing the biogeochemical divide
نویسندگان
چکیده
In our six box model (6BM) the Southern Ocean is represented by an Antarctic and a Subantarctic region. For simplicity, the lower (blue) circulation is represented entirely by mixing between the Antarctic surface waters (box a) and the deep ocean (box d), Mixad. The upper (red) circulation is represented by upwelling in the Subantarctic region (box s) and the subsequent transport of water to the low latitude thermocline (box l) and northern latitudes (box n). By analogy with the GCM study, alkalinity, temperature and salinity are assumed constant such that the 6BM is a softtissue only model. Biological production is parameterized like in the GCM, as nutrient restoring with a 30 day time scale.
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