Publication Date:
2024-03-15
Description:
The UK'37 sea surface temperature (SST) proxy, based on the distribution of long-chain akenones, was measured via mass spectrometry imaging (MSI) at 100-µm resolution in a 60-cm section of the well-dated core MD03-2621 from the Cariaco Basin (10.6782, -64.9715). This section spans an age of ~ 11.9 to 11.2 kyr b2k and thus includes the Younger Dryas-Holocene transition. Proxy data from each micrometer-sized spot were assigned to the upwelling and non-upwelling season based on the color of the sediment in that spot. As a result, separate records for the upwelling and non-upwelling seasons could be obtained. In order to translate UK'37 values into SST, a correction factor to account for differences between MSI-based data and conventional UK'37 data was applied. SST was calculated with the BAYSPLINE model.
Keywords:
AGE; Alkenone, unsaturation index UK'37; Calculated from UK37 using the BAYSPLINE calibration; CALYPSO; Calypso Corer; Cariaco Basin; Corrected for the offset between MSI and conventional analyses; Description; Holocene; IMAGES XI - P.I.C.A.S.S.O.; interannual variability; Marion Dufresne (1995); Mass spectrometry imaging; Mass spectrometry imaging (MSI); MD032621; MD03-2621; MD132; seasonality; Sea surface temperature; UK'37; Younger Dryas; ZOOMecular; Zooming into paleoenvironmental and biogeochemical processes through molecular imaging of biomarker distributions in sediments
Type:
Dataset
Format:
text/tab-separated-values, 1133 data points
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