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AMER GEOPHYSICAL UNION
In:
EPIC3Global Biogeochemical Cycles, AMER GEOPHYSICAL UNION, 27, pp. 1-10, ISSN: 0886-6236
Publication Date:
2019-07-17
Description:
We combined data sets of measured sedimentary calcium carbonate (CaCO3) and
satellite-derived pelagic primary production to parameterize the relation between CaCO3
content on the Antarctic shelves and primary production in the overlying water column.
CaCO3 content predicted in this way was in good agreement with the measured data. The
parameterization was then used to chart CaCO3 content on the Antarctic shelves all around
the Antarctic, using the satellite-derived primary production. The total inventory of CaCO3
in the bioturbated layer of Antarctic shelf sediments was estimated to be 0.5 Pg C. This
quantity is comparable to the total CO2 uptake by the Southern Ocean in only one to a few
years (dependent on the uptake estimate and area considered), indicating that the
dissolution of these carbonates will neither delay ocean acidification in this area nor
augment the Southern Ocean CO2 uptake capacity.
Repository Name:
EPIC Alfred Wegener Institut
Type:
Article
,
isiRev
Format:
application/pdf
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