HR: 0800h
AN: OS31A-0545    [Abstracts]
TI: An Updated Anthropogenic CO$_{2}$Inventory in the Atlantic Ocean
AU: * Lee, K
EM: ktl@postech.ac.kr
AF: School of Environmental Science and Engineering, Pohang University of Science and Technology, San 31, Hoja-dong, Nam-gu, Pohang, 790-784 Korea, Republic of
AU: Park, G
EM: pgh3715@postech.ac.kr
AF: School of Environmental Science and Engineering, Pohang University of Science and Technology, San 31, Hoja-dong, Nam-gu, Pohang, 790-784 Korea, Republic of
AU: Choi, S
EM: skills@postech.ac.kr
AF: School of Environmental Science and Engineering, Pohang University of Science and Technology, San 31, Hoja-dong, Nam-gu, Pohang, 790-784 Korea, Republic of
AU: Wanninkhof, R
EM: rik.wanninkhof@noaa.gov
AF: Atlantic Oceanographic and Meteorological Laboratory, NOAA, Miami, FL 33149 United States
AU: Peng, T
EM: peng@aoml.noaa.gov
AF: Atlantic Oceanographic and Meteorological Laboratory, NOAA, Miami, FL 33149 United States
AU: Key, R
EM: key@princeton.edu
AF: Atmospheric and Oceanic Sciences Program, Princeton University, Princeton, NJ 08554 United States
AU: Sabine, C
EM: sabine@pmel.noaa.gov
AF: Pacific Marine Environmental Laboratory, NOAA, Seattle, WA 98115 United States
AU: Feely, R
EM: feely@pmel.noaa.gov
AF: Pacific Marine Environmental Laboratory, NOAA, Seattle, WA 98115 United States
AU: Bullister, J
EM: bullister@pmel.noaa.gov
AF: Pacific Marine Environmental Laboratory, NOAA, Seattle, WA 98115 United States
AU: Millero, F
EM: fmillero@rsmas.miami.edu
AF: Rosenstiel School of Marine and Atmospheric Studies, University of Miami, Miami, FL 33149 United States
AU: Kozyr, A
EM: kozyra@ornl.gov
AF: Carbon Dioxide Information Analysis Center, Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6335 United States
AB: We present a comprehensive analysis of the basin-wide inventory of anthropogenic CO$_{2}$ in the Atlantic Ocean based on high-quality inorganic carbon, alkalinity, chlorofluorocarbon, and nutrient data collected during the WOCE/JGOFS/OACES surveys of the Atlantic Ocean between 1990 and 1998. Anthropogenic CO$_{2}$ was separated from the large pool of dissolved inorganic carbon using an extended version of the $\Delta$C$^{*}$ method originally developed by Gruber et al. [1996]. The extension of the method includes the use of an optimum multiparameter analysis to determine the relative contributions from various source water types to the sample on an isopycnal surface. The anthropogenic CO$_{2}$ distribution in the Atlantic Ocean determined in the present analysis displays various features that are consistent with those found in the Indian Ocean and Pacific Ocean, most notably high column inventories in the mid-latitude regions and lower column inventories in the Southern Ocean. However, in contrast to other basins, the Atlantic Ocean was found to have high column inventories at latitudes $>$$40\deg$N, largely due to the effective transport of anthropogenic CO$_{2}$ by newly formed deep water transported southward in the Deep Western Boundary Current. Analysis of the data collected during the 1990-1998 period yielded a total anthropogenic CO$_{2}$ inventory of $28.4 \pm$4.7 Pg C in the North Atlantic (equator-$70\deg$N) and of $18.5 \pm$3.9 Pg C in the South Atlantic (equator-$70\deg$S).
DE: 4805 Biogeochemical cycles (1615)
DE: 4806 Carbon cycling
DE: 4215 Climate and interannual variability (3309)
DE: 4532 General circulation
SC: Ocean Sciences [OS]
MN: 2004 AGU Fall Meeting