Biomarker, bulk parameter, XRF data of sediment core MSM12/2-5-1 from the Labrador Sea ...

• Main Authors: You, Defang, Stein, Ruediger, Fahl, Kirsten, Williams, Maricel, Schmidt, Daniela N, McCave, I Nick, Barker, Stephen, Schefuß, Enno, Kuhn, Gerhard, Niessen, Frank
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2022
• Subjects: Alkenone; IP25; Labrador Sea; Meltwater pulse; Sea ice; SST; Sterols; XRF; Processes and impacts of climate change in the North Atlantic Ocean and the Canadian Arctic ArcTrain; Climate change; North Atlantic; Phytoplankton
• Online Access: https://dx.doi.org/10.1594/pangaea.952329; https://doi.pangaea.de/10.1594/PANGAEA.952329

The data originates from the gravity core MSM12/2-5-1 (57.538500, -48.738700, recovery 1494 cm, 3492 m water depth) taken during R/V Maria S. Merian cruise MSM12/2 in 2009 in the eastern Labrador Sea (Eirik Drift). The data should provide more precise information on the timing and duration of freshwater forcing, which may help to improve simulations for past and future changes in ocean circulation and climate. We have investigated the very well-dated and high-resolution sediment core from the Eirik Drift, representing an interval from the last deglaciation to Holocene, i.e., the last 19 ka. Four meltwater-related cold events have been identified by abrupt changes in sea surface characteristics, which are based on independent multiple biomarker proxies, including sea-ice proxy IP25 and phytoplankton biomarker IP25 index (PIP25) for sea ice cover, the alkenone unsaturation index for sea surface temperature (SST), and the percentage of tetra-unsaturated alkenones (%C37:4) for meltwater inflow, and X-ray ...