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Nürnberg, Dirk; Müller, A; Schneider, Ralph R (2000): Paleo-sea surface temperature calculations in the equatorial east Atlantic. PANGAEA,, Supplement to: Nürnberg, D et al. (2000): Paleo-sea surface temperature calculations in the equatorial east Atlantik from Mg/Ca ratios in planktic foraminifera: A comparison to sea surface temperature estimates from U37K', oxygen isotopes, and foraminiferal transfer function. Paleoceanography, 15(1), 124-134,

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We present two ~270 kyr paleo-sea surface temperature (SST) records from the Equatorial Divergence and the South Equatorial Current derived from Mg/Ca ratios in the planktic foraminifer Globigerinoides sacculifer. The present study suggests that the magnesium signature of G. sacculifer provides a seasonal SST estimate from the upper ~50 m of the water column generated during upwelling in austral low-latitude fall/winter. Common to both down-core records is a glacial-interglacial amplitude of ~3°-3.5°C for the last climatic changes and lower Holocene and glacial oxygen isotope stage 2 temperatures compared with interglacial stage 5.5 and glacial stage 6 temperatures, respectively. The comparison to published SST estimates from alkenones, oxygen isotopes, and foraminiferal transfer function from the same core material pinpoints discrepancies and conformities between methods.
Median Latitude: -3.721665 * Median Longitude: -11.589165 * South-bound Latitude: -5.778330 * West-bound Longitude: -12.428330 * North-bound Latitude: -1.665000 * East-bound Longitude: -10.750000
Date/Time Start: 1989-02-25T00:00:00 * Date/Time End: 1989-03-02T00:00:00
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