Corpus ID: 134670400

The role of carbonate system dynamics in Southern Ocean CO2 uptake

  title={The role of carbonate system dynamics in Southern Ocean CO2 uptake},
  author={O. Legge},
  • O. Legge
  • Published 1 September 2017
  • Environmental Science
Three years of carbonate system measurements from Ryder Bay on the West Antarctic Peninsula are presented. The strong, asymmetric seasonal cycle of surface water Dissolved Inorganic Carbon (DIC) is quantitatively attributed to four processes:mixing of water masses, air-sea CO2 flux, calcium carbonate precipitation/dissolution and photosynthesis/respiration. In summer, reduced mixing with deeper water, net photosynthesis, and melting glacial ice and sea ice reduce DIC. In winter, mixing with… Expand


The seasonal cycle of carbonate system processes in Ryder Bay, West Antarctic Peninsula
The carbon cycle in seasonally sea-ice covered waters remains poorly understood due to both a lack of observational data and the complexity of the system. Here we present three consecutive seasonalExpand
Annual cycle of carbonate chemistry and decadal change in coastal Prydz Bay, East Antarctica
The annual cycles of dissolved carbon dioxide (CO2) system parameters were determined for a coastal site in East Antarctica using samples collected from May 2010 to February 2011 in Prydz Bay. TheseExpand
The seasonal cycle of ocean‐atmosphere CO2 flux in Ryder Bay, west Antarctic Peninsula
Approximately 15 million km2 of the Southern Ocean is seasonally ice covered, yet the processes affecting carbon cycling and gas exchange in this climatically important region remain inadequatelyExpand
Carbonate chemistry in the Mertz Polynya (East Antarctica): Biological and physical modification of dense water outflows and the export of anthropogenic CO2
[1] Dense shelf water (DSW) is formed in East Antarctica from enhanced sea-ice production driven by air-sea interaction in coastal polynyas. Cross-shelf export and downslope mixing of this DSWExpand
Rapid changes in surface water carbonate chemistry during Antarctic sea ice melt
The effect of sea ice melt on the carbonate chemistry of surface waters in the Weddell–Scotia Confluence, Southern Ocean, was investigated during January 2008. Contrasting concentrations of dissolvedExpand
Carbon cycling dynamics in the seasonal sea-ice zone of East Antarctica
The carbon cycle of the seasonally ice covered region of the southwest Indian Ocean sector of East Antarctica (30°–80°E, 60°–69°S) was investigated during austral summer (January–March 2006). LargeExpand
Ocean acidification and calcium carbonate saturation states in the coastal zone of the West Antarctic Peninsula
The polar oceans are particularly vulnerable to ocean acidification; the lowering of seawater pH and carbonate mineral saturation states due to uptake of atmospheric carbon dioxide (CO2). HighExpand
Assessment of the processes controlling the seasonal variations of dissolved inorganic carbon in the North Sea
We used a seasonal North Sea data set comprising dissolved inorganic carbon (DIC), partial pressure of CO2 (pCO2), and inorganic nutrients to assess the abiotic and biological processes governing theExpand
Carbon uptake and biogeochemical change in the Southern Ocean, south of Tasmania
Abstract. Biogeochemical change in the water masses of the Southern Ocean, south of Tasmania, was assessed for the 16-year period between 1995 and 2011 using data from four summer repeats of theExpand
Impact of biogeochemical processes and environmental factors on the calcium carbonate saturation state in the Circumpolar Flaw Lead in the Amundsen Gulf, Arctic Ocean
[1] 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 andExpand