Articles | Volume 12, issue 23
https://doi.org/10.5194/bg-12-6881-2015
https://doi.org/10.5194/bg-12-6881-2015
Research article
 | 
02 Dec 2015
Research article |  | 02 Dec 2015

Carbonate saturation state of surface waters in the Ross Sea and Southern Ocean: controls and implications for the onset of aragonite undersaturation

H. B. DeJong, R. B. Dunbar, D. Mucciarone, and D. A. Koweek

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ED: Publish subject to minor revisions (Editor review) (30 Oct 2015) by Laurent Bopp
AR by Hans DeJong on behalf of the Authors (30 Oct 2015)  Author's response   Manuscript 
ED: Publish as is (23 Nov 2015) by Laurent Bopp
AR by Hans DeJong on behalf of the Authors (23 Nov 2015)
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Short summary
We calculate the carbonate saturation state of surface water from the Ross Sea and along a transect between the Ross Sea and southern Chile using ~ 1700 total alkalinity measurements. Our results suggest that variability in surface carbonate saturation state is driven by biological productivity. We argue that in the Ross Sea the aragonite saturation state of surface water during the early spring never falls below 1.2.
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