Impact of Anthropogenic CO2 on the CaCO3 System in the Oceans

by: Richard A Feely, Christopher L Sabine, Kitack Lee, Will Berelson, Joanie Kleypas, Victoria J Fabry, Frank J Millero

Science, Vol. 305, No. 5682. (16 July 2004), pp. 362-366.

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Abstract

Rising atmospheric carbon dioxide (CO2) concentrations over the past two centuries have led to greater CO2 uptake by the oceans. This acidification process has changed the saturation state ofthe oceans with respect to calcium carbonate (CaCO3) particles. Here we estimate the in situ CaCO3 dissolution rates for the global oceans from total alkalinity and chlorofluorocarbon data, and we also discuss the future impacts of anthropogenic CO2 on CaCO3 shell-forming species. CaCO3 dissolution rates, ranging from 0.003 to 1.2 micromoles per kilogram per year, are observed beginning near the aragonite saturation horizon. The total water column CaCO3 dissolution rate for the global oceans is approximately 0.5 +/- 0.2 petagrams of CaCO3-C per year, which is approximately 45 to 65% of the export production of CaCO3. 10.1126/science.1097329

@article{citeulike:2739901, abstract = {Rising atmospheric carbon dioxide (CO2) concentrations over the past two centuries have led to greater CO2 uptake by the oceans. This acidification process has changed the saturation state ofthe oceans with respect to calcium carbonate (CaCO3) particles. Here we estimate the in situ CaCO3 dissolution rates for the global oceans from total alkalinity and chlorofluorocarbon data, and we also discuss the future impacts of anthropogenic CO2 on CaCO3 shell-forming species. CaCO3 dissolution rates, ranging from 0.003 to 1.2 micromoles per kilogram per year, are observed beginning near the aragonite saturation horizon. The total water column CaCO3 dissolution rate for the global oceans is approximately 0.5 {+/-} 0.2 petagrams of CaCO3-C per year, which is approximately 45 to 65\% of the export production of CaCO3. 10.1126/science.1097329}, author = {Feely, Richard A. and Sabine, Christopher L. and Lee, Kitack and Berelson, Will and Kleypas, Joanie and Fabry, Victoria J. and Millero, Frank J. }, citeulike-article-id = {2739901}, doi = {http://dx.doi.org/10.1126/science.1097329}, journal = {Science}, keywords = {aragonite, calcite, co2}, month = {July}, number = {5682}, pages = {362--366}, posted-at = {2008-04-30 20:32:58}, priority = {2}, title = {Impact of Anthropogenic CO2 on the CaCO3 System in the Oceans}, url = {http://dx.doi.org/10.1126/science.1097329}, volume = {305}, year = {2004} }

RIS record

TY - JOUR ID - citeulike:2739901 L3 - citeulike-article-id:2739901 N2 - Rising atmospheric carbon dioxide (CO2) concentrations over the past two centuries have led to greater CO2 uptake by the oceans. This acidification process has changed the saturation state ofthe oceans with respect to calcium carbonate (CaCO3) particles. Here we estimate the in situ CaCO3 dissolution rates for the global oceans from total alkalinity and chlorofluorocarbon data, and we also discuss the future impacts of anthropogenic CO2 on CaCO3 shell-forming species. CaCO3 dissolution rates, ranging from 0.003 to 1.2 micromoles per kilogram per year, are observed beginning near the aragonite saturation horizon. The total water column CaCO3 dissolution rate for the global oceans is approximately 0.5 {+/-} 0.2 petagrams of CaCO3-C per year, which is approximately 45 to 65% of the export production of CaCO3. 10.1126/science.1097329 IS - 5682 JF - Science EP - 366 TI - Impact of Anthropogenic CO2 on the CaCO3 System in the Oceans VL - 305 SP - 362 KW - aragonite KW - calcite KW - co2 AU - Feely, Richard AU - Sabine, Christopher AU - Lee, Kitack AU - Berelson, Will AU - Kleypas, Joanie AU - Fabry, Victoria AU - Millero, Frank PY - 2004/07/16/ UR - http://dx.doi.org/10.1126/science.1097329 ER -

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