Stable isotope ratios and sea surface temperatures of sediment core GIK23414-8 ...

• Main Authors: Kandiano, Evgenia S, van der Meer, Marcel T J, Schouten, Stefan, Fahl, Kirsten, Sinninghe Damsté, Jaap S, Bauch, Henning A
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2017
• Subjects: Gravity corer Kiel type; M17/2; Meteor 1986; North Atlantic
• Online Access: https://dx.doi.org/10.1594/pangaea.874008; https://doi.pangaea.de/10.1594/PANGAEA.874008

Investigating past interglacial climates not only help to understand how the climate system operates in general, it also forms a vital basis for climate predictions. We reconstructed vertical stratification changes in temperature and salinity in the North Atlantic for a period some 400 ka ago (MIS11), an interglacial time analogue of a future climate. As inferred from a unique set of biogeochemical, geochemical, and faunal data, the internal upper ocean stratification across MIS 11 shows distinct depth-dependent dynamical changes related to vertical as well as lateral shifts in the upper Atlantic meridional circulation system. Importantly, transient cold events are recognized near the end of the long phase of postglacial warming at surface, subsurface, mid, and deeper water layers. These data demonstrate that MIS 11 coolings over the North Atlantic were initially triggered by freshwater input at the surface and expansion of cold polar waters into the Subpolar Gyre. The cooling signal was then transmitted ... : Supplement to: Kandiano, Evgenia S; van der Meer, Marcel T J; Schouten, Stefan; Fahl, Kirsten; Sinninghe Damsté, Jaap S; Bauch, Henning A (2017): Response of the North Atlantic surface and intermediate ocean structure to climate warming of MIS 11. Scientific Reports, 7, 46192 ...