Reference : Aragonite Undersaturation in the High-Latitude Surface Ocean Within the 21st Century
Scientific congresses and symposiums : Unpublished conference
Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography
http://hdl.handle.net/2268/120224
Aragonite Undersaturation in the High-Latitude Surface Ocean Within the 21st Century
English
Orr, J. C. mailto [LSCE/CEA Saclay, Bat 709, L'Orme, Gif-sur-Yvette, F-91191 France ;]
Fabry, Véronique mailto [Centre Hospitalier Universitaire de Liège - CHU > > Bloc opératoire - réveil >]
Aumont, O. mailto [LODyC, 4 Place Jussieu, Paris, 75252 France ;]
Bopp, L. mailto [LSCE/CEA Saclay, Bat 709, L'Orme, Gif-sur-Yvette, F-91191 France ;]
Caldeira, K. mailto [LLNL, 7000 East Ave., L-103, Livermore, CA 94550 United States ;]
Wickett, M. E. mailto [LLNL, 7000 East Ave., L-103, Livermore, CA 94550 United States ;]
Doney, S. C. mailto [WHOI, Bigelow 209b-MS 11, Woods Hole, MA 02543 United States ;]
Feely, R. A. mailto [PMEL/NOAA, 7600 Sand Point Way, NE, Seattle, WA 98115 United States ;]
Sabine, C. L. mailto [PMEL/NOAA, 7600 Sand Point Way, NE, Seattle, WA 98115 United States ;]
Follows, M. mailto [Program in Atmospheres, Oceans and Climate, MIT, 77 Mass. Ave, Cambridge, MA 02139 United States ;]
Gruber, N. mailto [IGPP, UCLA, Los Angeles, CA 90095 United States ;]
Plattner, G. mailto [IGPP, UCLA, Los Angeles, CA 90095 United States ;]
Ishida, A. mailto [Frontier, 3173-25 Showamachi, Kanazawa-ku, Yokohama, 236-0001 Japan ;]
Yamanaka, Y. mailto [Frontier, 3173-25 Showamachi, Kanazawa-ku, Yokohama, 236-0001 Japan ;]
Joos, F. mailto [PIUB, University of Bern, Sidlerstrasse 5, Bern, CH-3012 Switzerland ;]
Gnanadesikan, A. mailto [GFDL/NOAA, P.O. Box 308, Princeton, NJ 08542 United States ;]
Key, R. M. mailto [AOS Program, Princeton University, Princeton, NJ 08544 United States ;]
Sarmiento, J. L. mailto [AOS Program, Princeton University, Princeton, NJ 08544 United States ;]
Slater, R. D. mailto [AOS Program, Princeton University, Princeton, NJ 08544 United States ;]
Lindsay, K. mailto [NCAR, P.O. Box 3000, Boulder, CO 80307 United States ;]
Maier-Reimer, E. mailto [MPIM, Bundesstrasse 55, Hamburg, D-20146 Germany ;]
Matear, R. mailto [CSIRO, GPO Box 1538, Hobart, 7001 Australia ;]
Monfray, P. mailto [LEGOS, 18 Ave. Ed. Belin, Toulouse, 31401 France ;]
Mouchet, Anne mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP) >]
Najjar, R. G. mailto [Dept. of Meteorology, Penn. State University, University Park, PA 16802 United States ;]
Schlitzer, R. mailto [AWI, for Polar and Marine Research, Bremerhaven, D-27568 Germany ;]
Weirig, M. mailto [AWI, for Polar and Marine Research, Bremerhaven, D-27568 Germany ;]
Yool, A. mailto [SOC, Empress Dock, Southampton, SO14 3AZ United Kingdom ;]
Totterdell, I. mailto [SOC, Empress Dock, Southampton, SO14 3AZ United Kingdom ;]
Dec-2004
No
No
International
AGU Fall Meeting
13-17 Dec, 2004
San Francisco
USA
[en] 4842 Modeling ; 4255 Numerical modeling ; 4263 Ocean prediction ; 1635 Oceans (4203)
[en] The surface ocean is everywhere saturated with calcium carbonate (CaCO[SUB]3[/SUB]). Yet increasing atmospheric CO[SUB]2[/SUB] reduces ocean pH and carbonate ion concentration and thus the level of saturation. Here we show with ocean data and models that due to this anthropogenic acidification, some surface waters will become undersaturated within decades. When atmospheric CO[SUB]2[/SUB] reaches 550 ppmv, in year 2050 under the IS92a business-as-usual scenario, Southern Ocean surface waters begin to become undersaturated with respect to aragonite, a metastable form of CaCO[SUB]3[/SUB]. By 2100 as atmospheric CO[SUB]2[/SUB] reaches 788 ppmv, undersaturation extends throughout the entire Southern Ocean (<60[SUP]o[/SUP]S) and into the surbarctic Pacific. Meanwhile, Weddell Sea surface waters also become undersaturated with respect to calcite, the stable form of CaCO[SUB]3[/SUB]. These transient changes are much larger than seasonal, interannual, and decadal variability. They threaten high-latitude aragonite secreting organisms including cold-water corals, which provide essential fish habitat, and shelled pteropods, i.e., zooplankton that serve as an abundant food source for marine predators.
http://hdl.handle.net/2268/120224
http://esoads.eso.org/abs/2004AGUFMOS24B..08O

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