Inorganic carbon transport during sea ice growth and decay:A carbon pump in polar seas

[1] During sea ice formation in polar areas, brine rejection increases the density in the underlying water column and thereby contributes to the formation of deep and intermediate water masses in the world ocean. Here we present evidence that dissolved inorganic carbon (TCO2) is rejected together wi...

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Bibliographic Details
Published in:Journal of Geophysical Research
Main Authors: Rysgaard, S, Glud, Ronnie, Sejr, M, Bendtsen, J, Christensen, PB
Format: Article in Journal/Newspaper
Language:English
Published: 2007
Subjects:
ALKALINITY
SEAWATER
WATER
ANTARCTICA
BRINE
STORFJORDEN
MELTWATER
Oceanography
CIRCULATION
OCEAN
EXCHANGE-RATES
Arctic
Antarc*
Antarctica
Sea ice
Online Access:https://pure.uhi.ac.uk/en/publications/6728d79c-8303-4095-ba37-75bf7fbf911a
https://doi.org/10.1029/2006JC003572
Description
Summary:[1] During sea ice formation in polar areas, brine rejection increases the density in the underlying water column and thereby contributes to the formation of deep and intermediate water masses in the world ocean. Here we present evidence that dissolved inorganic carbon (TCO2) is rejected together with brine from growing sea ice and that low temperatures may result in a significant change in the ratio of TCO2 and alkalinity in Arctic sea ice compared with surface waters. Model calculations show that this sea ice - driven carbon pump affects surface water partial pressure of CO2 significantly in polar seas and potentially sequesters large amounts of CO2 to the deep ocean.

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