Sea-surface temperature reconstruction and calibration-function of sediment cores from the Southern Ocean, supplement to: García Chapori, Natalia Luz; Chiessi, Cristiano Mazur; Bickert, Torsten; Laprida, Cecilia (2015): Sea-surface temperature reconstruction of the Quaternary western South Atlantic: New planktonic foraminiferal correlation function. Palaeogeography, Palaeoclimatology, Palaeoecology, 425, 67-75

• Main Authors: García Chapori, Natalia Luz, Chiessi, Cristiano Mazur, Bickert, Torsten, Laprida, Cecilia
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2015
• Subjects: Center for Marine Environmental Sciences MARUM; Antarctic; Southern Ocean; The Antarctic; Laprida; Antarc*; Planktonic foraminifera
• Online Access: https://dx.doi.org/10.1594/pangaea.845640; https://doi.pangaea.de/10.1594/PANGAEA.845640

We provide a new multivariate calibration-function based on South Atlantic modern assemblages of planktonic foraminifera and atlas water column parameters from the Antarctic Circumpolar Current to the Subtropical Gyre and tropical warm waters (i.e., 60°S to 0°S). Therefore, we used a dataset with the abundance pattern of 35 taxonomic groups of planktonic foraminifera in 141 surface sediment samples. Five factors were taken into consideration for the analysis, which account for 93% of the total variance of the original data representing the regional main oceanographic fronts. The new calibration-function F141-35-5 enables the reconstruction of Late Quaternary summer and winter sea-surface temperatures with a statistical error of ~0.5°C. Our function was verified by its application to a sediment core extracted from the western South Atlantic. The downcore reconstruction shows negative anomalies in sea-surface temperatures during the early-mid Holocene and temperatures within the range of modern values during the late Holocene. This pattern is consistent with available reconstructions.