Southern Ocean upwelling, Earth’s obliquity, and glacial-interglacial atmospheric CO 2 change
Controlling atmospheric carbon dioxide The atmospheric concentration of carbon dioxide (CO 2 ) has varied substantially over the past million years in tandem with the glacial cycle. Although it is widely agreed that upwelling of Southern Ocean water is a key factor, the finer details about what caus...
Published in: | Science |
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Main Authors: | , , , , , , , , , , , , , |
Other Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
American Association for the Advancement of Science (AAAS)
2020
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Subjects: | |
Online Access: | http://dx.doi.org/10.1126/science.abd2115 https://syndication.highwire.org/content/doi/10.1126/science.abd2115 https://www.science.org/doi/pdf/10.1126/science.abd2115 |
Summary: | Controlling atmospheric carbon dioxide The atmospheric concentration of carbon dioxide (CO 2 ) has varied substantially over the past million years in tandem with the glacial cycle. Although it is widely agreed that upwelling of Southern Ocean water is a key factor, the finer details about what caused these CO 2 variations are of great importance for understanding climate. Ai et al. identified three modes of change in Southern Ocean upwelling, adding a third to two previously recognized ones. This new mode can help explain better the relative timing of the glacial and CO 2 cycles. Science , this issue p. 1348 |
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