Impact of Anthropogenic CO 2 on the CaCO 3 System in the Oceans-Reference-Cited by-同舟云学术

Impact of Anthropogenic CO 2 on the CaCO 3 System in the Oceans

Published:2004-07-16 Issue:5682 Volume:305 Page:362-366
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Feely Richard A.¹²³⁴⁵,Sabine Christopher L.¹²³⁴⁵,Lee Kitack¹²³⁴⁵,Berelson Will¹²³⁴⁵,Kleypas Joanie¹²³⁴⁵,Fabry Victoria J.¹²³⁴⁵,Millero Frank J.¹²³⁴⁵

Affiliation:

1. Pacific Marine Environmental Laboratory, National Oceanic and Atmospheric Administration, Seattle, WA 98115–6349, USA.

2. School of Environmental Science and Engineering, Pohang University of Science and Technology, San 31, Nam-gu, Hyoja-dong, Pohang, 790–784, Republic of Korea.

3. Department of Earth Sciences, University of Southern California, Los Angeles, Los Angeles, CA 90089–0740, USA.

4. Environmental and Societal Impacts Group, National Center for Atmospheric Research, Boulder, CO 80307–3000, USA.

5. Department of Biological Sciences, California State University San Marcos, San Marcos, CA 92096–0001, USA.

Abstract

Rising atmospheric carbon dioxide (CO 2 ) concentrations over the past two centuries have led to greater CO 2 uptake by the oceans. This acidification process has changed the saturation state ofthe oceans with respect to calcium carbonate (CaCO 3 ) particles. Here we estimate the in situ CaCO 3 dissolution rates for the global oceans from total alkalinity and chlorofluorocarbon data, and we also discuss the future impacts of anthropogenic CO 2 on CaCO 3 shell–forming species. CaCO 3 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 CaCO 3 dissolution rate for the global oceans is approximately 0.5 ± 0.2 petagrams of CaCO 3 -C per year, which is approximately 45 to 65% of the export production of CaCO 3 .

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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