Detecting regional anthropogenic trends in ocean acidification against natural variability Since the beginning of the Industrial Revolution humans have released ∼500 billion metric tons of carbon to the atmosphere through fossil-fuel burning, cement produ

• Main Authors: Published, Online
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Ocean acidification
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1053.7553; http://shadow.eas.gatech.edu/%7Ekcobb/ocean_acid/Friedrich%20et%20al%202012.pdf

. About 30% has been taken up by the oceans Skeletons and shells of marine calcifiers are made of different crystalline forms of calcium carbonate, such as calcite or aragonite. A decrease in the saturation state of calcium carbonate can result in decreased calcification and increased dissolution of calcium carbonate Here we present results from a model simulation over 1,300 years (800-2099 ad) that was conducted with a state-of-the-art coupled carbon cycle-climate model (MPI-ESM, see Supplementary Information for details) forced by the most recent reconstructions of solar and volcanic radiative perturbations, land-use changes, aerosols and orbital variations. The model is also subject to historical CO 2 emissions and the A1B greenhouse-gas emission scenario ( According to the MPI-ESM simulation of the pre-industrial surface waters, local marine ecosystems have been exposed to a diverse range of natural variability in both the amplitude of the annual cycle and the interannual variability of Ω surf Ar (