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Impact of biogeochemical processes and environmental factors on the calcium carbonate saturation state in the Circumpolar Flaw Lead in the Amundsen Gulf, Arctic Ocean
Citation
Chierici, M and Fransson, A and Lansard, B and Miller, LA and Mucci, A and Shadwick, E and Thomas, H and Tremblay, J and Papakyriakou, TN, Impact of biogeochemical processes and environmental factors on the calcium carbonate saturation state in the Circumpolar Flaw Lead in the Amundsen Gulf, Arctic Ocean, Journal of Geophysical Research-Space Physics, 116, (C9) Article C00G09. ISSN 2156-2202 (2011) [Refereed Article]
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Copyright Statement
Copyright 2011 American Geophysical Union.
Abstract
We report on measurements across an annual cycle of carbon dioxide system parameters in the polar mixed layer (PML) of the circumpolar flaw lead in the Amundsen Gulf, Arctic Ocean. From these and other properties (nitrate, S, T) of the PML, we found that biological processes (photosynthesis and respiration) accounted for about 50% of the monthly variations in the carbonate ion concentration, [CO32−] and Ù, the saturation state of these waters with respect to calcite (ÙCa) and aragonite (ÙAr). Vertical mixing and salinity changes had equal impacts over the annual cycle. The impact of sea ice meltwater resulted in decreasing Ù values in summer, but most of this change was offset by the Ù increase as a result of CO2 drawdown during biological photosynthesis.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | Arctic Ocean, Carbonate Saturation State, Biogeochemistry |
| Research Division: | Earth Sciences |
| Research Group: | Oceanography |
| Research Field: | Chemical Oceanography |
| Objective Division: | Environment |
| Objective Group: | Physical and Chemical Conditions of Water |
| Objective Field: | Physical and Chemical Conditions of Water in Coastal and Estuarine Environments |
| UTAS Author: | Shadwick, E (Dr Elizabeth Shadwick) |
| ID Code: | 75929 |
| Year Published: | 2011 |
| Web of Science® Times Cited: | 28 |
| Deposited By: | CRC-Antarctic Climate & Ecosystems |
| Deposited On: | 2012-02-21 |
| Last Modified: | 2017-10-31 |
| Downloads: | 0 |
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