Radiolarian-based bransfer function for the estimation of sea surface temperatures in the Southern Ocean (Atlantic Sector)

• Main Authors: Abelmann, Andrea, Brathauer, Uta, Gersonde, Rainer, Sieger, Rainer, Zielinski, Ulrich
• Format: Other/Unknown Material
• Language: English
• Published: PANGAEA 1999
• Subjects: Agulhas Basin; ANT-IV/3; ANT-IV/4; ANT-IX/2; ANT-IX/4; ANT-VIII/3; ANT-VIII/6; Astrid Ridge; Atka Bay; Atlantic Ridge; AWI_Paleo; Camp Norway; Cape Basin; Filchner Shelf; Fram Strait; Giant box corer; GKG; Gravity corer (Kiel type); Indian-Antarctic Ridge; Lazarev Sea; Maud Rise; Meteor Rise; MIC; MiniCorer; MSN; MUC; MultiCorer; Multiple opening/closing net; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; PLA; Plankton net; Polarstern; PS08; PS08/347; PS08/356; PS08/364; PS08/365; PS08/374; PS08/610; PS1375-2; PS1380-1; PS1386-1; PS1387-1; PS1394-1; PS1455-4; PS16; PS16/267; PS16/271; PS16/281; PS16/294; Antarc*; Antarctic; Southern Ocean
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.728294; https://doi.org/10.1594/PANGAEA.728294

A new radiolarian-based transfer function for sea surface temperature (SST) estimations has been developed from 23 taxa and taxa groups in 53 surface sediment samples recovered between 35° and 72°S in the Atlantic sector of the Southern Ocean. For the selection of taxa and taxa groups ecological information from water column studies was considered. The transfer function allows the estimation of austral summer SST (December-March) ranging between -1 and 18°C with a standard error of estimate of 1.2°C. SST estimates from selected late Pleistocene squences were sucessfully compared with independend paleotemperature estimates derived from a diatom transfer function. This shows that radiolarians provide an excellent tool for paleotemperature reconstructions in Pleistocene sediments of the Southern Ocean.