Orals

CL1.12

Global ocean circulation plays a key role in redistributing heat and in setting the oceanic carbon gradients, and thus modulates global climate on centennial to millennial time scales. With the emergence of new methods, greater spatial and temporal paleo-record coverage, and model simulations with numerous tracers, significant improvement has been made in the understanding of past oceanic changes and their impacts on global climate and the carbon cycle. New proxy approaches and increasing geographical coverage fill important gaps in the reconstruction of different ocean states and decrease uncertainty that arises from interpretations based on individual parameters and sites. Similarly, refined model approaches and increased computing capacity allow for the integration of important small- and intermediate scale processes as well as the direct inclusion of proxies in numerical models.

This session welcomes contributions on the role of the ocean circulation in Pleistocene climate and glacial-interglacial climate transitions. This comprises proxy and model assessments of ocean heat and carbon content, circulation strength and other climatic and biogeochemical parameters, including details on their regional variation, given they are relevant for understanding global processes. Furthermore, we encourage contributions of reconstructions that seem contradictory to the prevailing view insofar as their discussion may hint towards processes or pitfalls that are under appreciated and thus potentially important for future research.

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Co-organized as OS1.23
Convener: Patrick Blaser | Co-conveners: Laurie Menviel, Andreas Schmittner, Peter Spooner, Xu Zhang
Orals
| Tue, 09 Apr, 08:30–10:15
 
Room 0.49
Posters
| Attendance Mon, 08 Apr, 10:45–12:30
 
Hall X5

Tuesday, 9 April 2019 | Room 0.49

Chairperson: 16516
Ocean Carbon Storage
Chairperson: 16516
08:30–08:45 |
EGU2019-2042
Axel Timmermann, Karl Stein, and Tobias Friedrich
Chairperson: 16516
08:45–09:00 |
EGU2019-16669
Bo Liu, Tatiana Ilyina, Katharina Six, and Irene Stemmler
Chairperson: 16516
09:00–09:15 |
EGU2019-5738
Augustin Kessler, Eirik Vinje Galaasen, Ulysses Silas Ninnemann, and Jerry Tjiputra
Chairperson: 16516
Past AMOC Variation
Chairperson: 16516
Chairperson: 16516
09:30–09:45 |
EGU2019-12699
André Paul, Rike Völpel, Stefan Mulitza, Charlotte Breitkreuz, Jean Lynch-Stieglitz, and Michael Schulz
Chairperson: 16516
09:45–10:00 |
EGU2019-2342
Assessing the Ability of Zonal d18O Contrast in Benthic Foraminifera to Reconstruct Deglacial Evolution of Atlantic Meridional Overturning Circulation
(withdrawn)
Sifan Gu, Jean Lynch-Stieglitz, Zhengyu Liu, Alexandra Jahn, Jiaxu Zhang, Keith Lindsay, and Lixin Wu
Chairperson: 16516
10:00–10:15 |
EGU2019-15884
Janne Repschläger, Ning Zhao, Olivier Cartapanis, Stefan Mulitza, Lorraine Lisiecki, Juan Muglia, Andreas Schmittner, and Ralf Schiebel and the Pages OC3 working group members