Compilation of planktonic foraminiferal census counts from the Southern Hemisphere Oceans ...
We present an improved database of planktonic foraminiferal census counts from the Southern Hemisphere Oceans (SHO) from 15°S to 64°S. The SHO database combines 3 existing databases. Using this SHO database, we investigated dissolution biases that might affect faunal census counts. We suggest a dept...
Main Authors: | , , , , , , |
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Format: | Dataset |
Language: | English |
Published: |
PANGAEA
2016
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Subjects: | |
Online Access: | https://dx.doi.org/10.1594/pangaea.860938 https://doi.pangaea.de/10.1594/PANGAEA.860938 |
Summary: | We present an improved database of planktonic foraminiferal census counts from the Southern Hemisphere Oceans (SHO) from 15°S to 64°S. The SHO database combines 3 existing databases. Using this SHO database, we investigated dissolution biases that might affect faunal census counts. We suggest a depth/[DCO3]2- threshold of ~3800 m/[DCO3]2- = ~-10 to -5 µmol/kg for the Pacific and Indian Oceans, and ~4000 m/[DCO3]2- = ~0 to 10 µmol/kg for the Atlantic Ocean, under which core-top assemblages can be affected by dissolution and are less reliable for paleo-sea surface temperature (SST) reconstructions. We removed all core-tops beyond these thresholds from the SHO database. This database has 598 core-tops and is able to reconstruct past SST variations from 2° to 25.5°C, with a root mean square error of 1.00°C, for annual temperatures. To inspect dissolution affects SST reconstruction quality, we tested the data base with two "leave-one-out" tests, with and without the deep core-tops.We used this database to ... : Supplement to: Haddam, Naoufel; Michel, Elisabeth; Siani, Giuseppe; Cortese, Giuseppe; Bostock, Helen C; Duprat, Josette M; Isguder, Gulay (2016): Improving past sea surface temperature reconstructions from the Southern Hemisphere oceans using planktonic foraminiferal census data. Paleoceanography, 31(6), 822-837 ... |
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