Articles | Volume 20, issue 5
https://doi.org/10.5194/cp-20-1161-2024
https://doi.org/10.5194/cp-20-1161-2024
Research article
 | 
15 May 2024
Research article |  | 15 May 2024

Mechanisms of global ocean ventilation age change during the last deglaciation

Lingwei Li, Zhengyu Liu, Jinbo Du, Lingfeng Wan, and Jiuyou Lu

Related authors

Multi-model assessment of the deglacial climatic evolution at high southern latitudes
Takashi Obase, Laurie Menviel, Ayako Abe-Ouchi, Tristan Vadsaria, Ruza Ivanovic, Brooke Snoll, Sam Sherriff-Tadano, Paul Valdes, Lauren Gregoire, Marie-Luise Kapsch, Uwe Mikolajewicz, Nathaelle Bouttes, Didier Roche, Fanny Lhardy, Chengfei He, Bette Otto-Bliesner, Zhengyu Liu, and Wing-Le Chan
Clim. Past Discuss., https://doi.org/10.5194/cp-2023-86,https://doi.org/10.5194/cp-2023-86, 2023
Preprint under review for CP
Short summary
Asymmetric changes in temperature in the Arctic during the Holocene based on a transient run with the Community Earth System Model (CESM)
Hongyue Zhang, Jesper Sjolte, Zhengyao Lu, Jian Liu, Weiyi Sun, and Lingfeng Wan
Clim. Past, 19, 665–680, https://doi.org/10.5194/cp-19-665-2023,https://doi.org/10.5194/cp-19-665-2023, 2023
Short summary
N2O changes from the Last Glacial Maximum to the preindustrial – Part 2: terrestrial N2O emissions and carbon–nitrogen cycle interactions
Fortunat Joos, Renato Spahni, Benjamin D. Stocker, Sebastian Lienert, Jurek Müller, Hubertus Fischer, Jochen Schmitt, I. Colin Prentice, Bette Otto-Bliesner, and Zhengyu Liu
Biogeosciences, 17, 3511–3543, https://doi.org/10.5194/bg-17-3511-2020,https://doi.org/10.5194/bg-17-3511-2020, 2020
Short summary
Distorted Pacific–North American teleconnection at the Last Glacial Maximum
Yongyun Hu, Yan Xia, Zhengyu Liu, Yuchen Wang, Zhengyao Lu, and Tao Wang
Clim. Past, 16, 199–209, https://doi.org/10.5194/cp-16-199-2020,https://doi.org/10.5194/cp-16-199-2020, 2020
Short summary
Holocene temperature response to external forcing: assessing the linear response and its spatial and temporal dependence
Lingfeng Wan, Zhengyu Liu, Jian Liu, Weiyi Sun, and Bin Liu
Clim. Past, 15, 1411–1425, https://doi.org/10.5194/cp-15-1411-2019,https://doi.org/10.5194/cp-15-1411-2019, 2019
Short summary

Related subject area

Subject: Ocean Dynamics | Archive: Modelling only | Timescale: Millenial/D-O
Impact of North Atlantic – GIN Sea exchange on deglaciation evolution of the Atlantic Meridional Overturning Circulation
J. Cheng, Z. Liu, F. He, B. L. Otto-Bliesner, and C. Colose
Clim. Past, 7, 935–940, https://doi.org/10.5194/cp-7-935-2011,https://doi.org/10.5194/cp-7-935-2011, 2011
Limitations of red noise in analysing Dansgaard-Oeschger events
H. Braun, P. Ditlevsen, J. Kurths, and M. Mudelsee
Clim. Past, 6, 85–92, https://doi.org/10.5194/cp-6-85-2010,https://doi.org/10.5194/cp-6-85-2010, 2010

Cited articles

Adkins, J. F. and Boyle, E. A.: Changing atmospheric Δ14C and the record of deep water paleoventilation ages, Paleoceanography, 12, 337–344, https://doi.org/10.1029/97PA00379, 1997. 
Adkins, J. F., Mclntyre, K., and Schrag, D. P.: The salinity, temperature, and δ18O of the glacial deep ocean, Science, 298, 1769–1773, https://doi.org/10.1126/science.1076252, 2002. 
Ai, X. E., Studer, A. S., Sigman, D. M., Martínez-García, A., Fripiat, F., Thöle, L. M., Michel, E., Gottschalk, J., Arnold, L., Moretti, S., Schmitt, M., Oleynik, S., Jaccard, S. L., and Haug, G. H.: Southern Ocean upwelling, Earth's obliquity, and glacial-interglacial atmospheric CO2 change, Science, 370, 1348–1352, https://doi.org/10.1126/science.abd2115, 2020. 
Brady, E., Stevenson, S., Bailey, D., Liu, Z., Noone, D., Nusbaumer, J., Otto-Bliesner, B. L., Tabor, C., Tomas, R., Wong, T., Zhang, J., and Zhu, J.: The Connected Isotopic Water Cycle in the Community Earth System Model Version 1, J. Adv. Model. Earth Sy., 11, 2547–2566, https://doi.org/10.1029/2019MS001663, 2019. 
Broecker, W. S.: Glacial to Interglacial Changes in Ocean Chemistry, Prog. Oceanogr., 11, 151–197, 1982. 
Download
Short summary
Radiocarbon proxies suggest that the deep waters are poorly ventilated during the Last Glacial Maximum (LGM). Here we use two transient simulations with tracers of radiocarbon and ideal age to show that the deep-ocean ventilation age is not much older at the LGM compared to the present day because of the strong glacial Antarctic Bottom Water transport. In contrast, the ventilation age is older during deglaciation mainly due to weakening of Antarctic Bottom Water transport.