These datasets contain the age model, Summer Sea Surface Temperature reconstruction (SSST), relative percentage of planktonic foraminifera and diatoms and their associated standard error from core MD07-3081. This core was collected ~100 km from the coast of Chile with a CALYPSO piston corer during the oceanographic expedition MD159 PACHIDERME onboard R/V Marion Dufresne and covers the period from the Last Glacial Maximum to the Late Holocene. They present a new paleoceanographic reconstruction since the Last Glacial Maximum, at 49º S in the Pacific Ocean, an environment in which diatoms have not been studied previously.

The financial support for this research was given by:1) French-Swedish project on SO VR-349-2012-6278, Laboratoire des Sciences du Climat et de l'Environnement (LSCE), Laboratoire mixte CNRS-CEA-UVSQ, Bât 714, L'orme des Merisiers, 91190 Gif-sur-Yvette Cedex, France2) French INSU SEPORA project, Laboratoire des Sciences du Climat et de l'Environnement (LSCE), Laboratoire mixte CNRS-CEA-UVSQ, Bât 714, L'orme des Merisiers, 91190 Gif-sur-Yvette Cedex, FranceWe also thank the LMC14 staff "Laboratoire de Mesure du Carbone-14", ARTEMIS national facility (LSCE (CNRS-CEA-UVSQ)-IRD-IRSN-MC) (Laboratoire des Sciences du Climat et de l'Environnement (LSCE), Laboratoire mixte CNRS-CEA-UVSQ, Bât 714, L'orme des Merisiers, 91190 Gif-sur-Yvette Cedex, France), for the results obtained with the accelerator mass spectrometry method.