Global reorganization of deep-sea circulation and carbon storage after the last ice age

  • Patrick A. Rafter (Creator)
  • William R. Gray (Université Paris-Saclay) (Creator)
  • Sophia K. V. Hines (Creator)
  • Andrea Burke (Creator)
  • Kassandra M. Costa (Creator)
  • Julia Gottschalk (Creator)
  • Mathis P. Hain (Creator)
  • James William Buchanan Rae (Creator)
  • John R. Southon (Creator)
  • Maureen H. Walczak (Creator)
  • Jimin Yu (Creator)
  • Jess F. Adkins (Creator)
  • Timothy DeVries (Creator)



This uses the dataset stored at PANGAEA:

Abstract from the paper: Using new and published marine fossil radiocarbon (<sup>14</sup>C/C) measurements—a tracer uniquely sensitive to circulation and air-sea gas exchange—we establish several benchmarks for Atlantic, Southern, and Pacific deep-sea circulation and ventilation since the last ice age. We find the most <sup>14</sup>C-depleted water in glacial Pacific bottom depths, rather than the mid-depths as they are today, which is best explained by a slowdown in glacial deep-sea overturning in addition to a “flipped” glacial Pacific overturning configuration. These observations cannot be produced by changes in air-sea gas exchange alone, and they underscore the major role for changes in the overturning circulation for glacial deep-sea carbon storage in the vast Pacific abyss, and the concomitant drawdown of atmospheric CO<sub>2</sub>.
Date made available2022

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