TY - JOUR T1 - Constraining global air-sea gas exchange for CO2 with recent bomb 14C measurements JF - Global Biogeochemical Cycles Y1 - 2007 A1 - Sweeney, C. A1 - Gloor, E. A1 - Jacobson, A. J. A1 - Key, R. M. A1 - McKinley, G. A1 - Sarmiento, J. L. A1 - Wanninkhof, R. VL - 21 N1 - id: 1052 ER - TY - RPRT T1 - Global ocean data analysis project (GLODAP): Results and data, ORNL/CDIAC-145, NDP-145 Y1 - 2005 A1 - Sabine, C. L. A1 - Key, R. M. A1 - Kozyr, A. A1 - Feely, R. A. A1 - Wanninkhof, R. A1 - Millero, F. J. A1 - Peng, T. H. A1 - Bullister, J. L. A1 - Lee, K. N1 - id: 529 ER - TY - JOUR T1 - A global ocean carbon climatology: Results from global data analysis project (GLODAP) JF - Global Biogeochemical Cycles Y1 - 2004 A1 - Kay, R. M. A1 - Kozyr, A. A1 - Sabine, C. L. A1 - Lee, K. A1 - Wanninkhof, R. A1 - Bullister, J. L. A1 - Feely, R. A. A1 - Millero, F. J. A1 - Mordy, C. A1 - Peng, T. H. VL - 18 N1 - id: 527 ER - TY - JOUR T1 - Calcium carbonate budget in the Atlantic Ocean based on water column inorganic carbon chemistry JF - Global Biogeochemical Cycles Y1 - 2003 A1 - Chung, S. N. A1 - Lee, K. A1 - Feely, R. A. A1 - Sabine, C. L. A1 - Millero, F. J. A1 - Wanninkhof, R. A1 - Bullister, J. L. A1 - Key, R. M. A1 - Peng, T. H. KW - alkalinity KW - anthropogenic co2 KW - caco3 dissolution KW - calcium carbonate budget KW - chemical lysocline KW - Deep-sea KW - dioxide system KW - dissociation-constants KW - dissolution kinetics KW - dissolution of calcium carbonate KW - eastern north-atlantic KW - ocean carbon cycle KW - organic-carbon KW - pacific-ocean KW - saturation state of seawater AB - [1] Recent independent lines of evidence suggest that the dissolution of calcium carbonate (CaCO3) particles is substantial in the upper ocean above the calcite 100% saturation horizon. This shallow-water dissolution of carbonate particles is in contrast with the current paradigm of the conservative nature of pelagic CaCO3 at shallow water depths. Here we use more than 20,000 sets of carbon measurements in conjunction with CFC and C-14 data from the WOCE/JGOFS/OACES global CO2 survey to estimate in situ dissolution rates of CaCO3 in the Atlantic Ocean. A dissolution rate is estimated from changes in alkalinity as a parcel of water ages along an isopycnal surface. The in situ CaCO3 dissolution increases rapidly at the aragonite 100% saturation horizon. Estimated dissolution rates north of 40degreesN are generally higher than the rates to the south, which is partly attributable to the production of exported CaCO3 being higher in the North Atlantic than in the South Atlantic. As more CaCO3 particles move down the water column, more particles are available for in situ dissolution. The total water column CaCO3 dissolution rate in the Atlantic Ocean is determined on an annual basis by integrating estimated dissolution rates throughout the entire water column and correcting for alkalinity input of approximately 5.6 x 10(12) mol C yr(-1) from CaCO3-rich sediments. The resulting water column dissolution rate of CaCO3 for the Atlantic Ocean is approximately 11.1 x 10(12) mol C yr(-1). This corresponds to about 31% of a recent estimate (35.8 x 10(12) mol C yr(-1)) of net CaCO3 production by Lee [2001] for the same area. Our calculation using a large amount of high-quality water column alkalinity data provides the first basin-scale estimate of the CaCO3 budget for the Atlantic Ocean. VL - 17 SN - 0886-6236 IS - 4 N1 - 732egTimes Cited:44 Cited References Count:73 JO - Global Biogeochem Cy ER - TY - CONF T1 - Multiple anthropogenic tracer distributions in the ocean T2 - Sixth International CO2 Conference Y1 - 2001 A1 - Sabine, C. L. A1 - Key, R. M. A1 - Bullister, J. L. A1 - Feely, R. A. A1 - Lamb, M. F. A1 - Millero, F. J. A1 - Wanninkhof, R. A1 - Peng, T. H. A1 - Lee, K. A1 - Kozyr, A. A1 - Gruber, N. JF - Sixth International CO2 Conference CY - Sendai, Japan N1 - id: 319 ER -