Projects per year
Description
This uses the dataset stored at PANGAEA: https://doi.pangaea.de/10.1594/PANGAEA.946522
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>.
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 available | 2022 |
|---|---|
| Publisher | Zenodo |
Projects
- 2 Finished
-
INTRIGUED: Investigating the role of the: INTRIGUED: Investigating The Role of the North Pacific in Glacial and Deglacial CO2 and Climate
Rae, J. W. B. (PI) & Burke, A. (CoI)
1/06/16 → 31/01/20
Project: Standard
Research output
- 1 Article
-
Global reorganization of deep-sea circulation and carbon storage after the last ice age
Rafter, P., Gray, W., Hines, S. K. V., Burke, A., Costa, K. M., Gottschalk, J., Hain, M. P., Rae, J. W. B., Southon, J. R., Walczak, M. H., Yu, J., Adkins, J. F. & DeVries, T., 16 Nov 2022, In: Science Advances. 8, 46, 9 p., eabq5434.Research output: Contribution to journal › Article › peer-review
Open AccessFile26 Citations (Scopus)10 Downloads (Pure)