Fig. 1: Modern-day oceanography at Site U1475 during austral summer (December-January-February, DJF) and austral winter (June-July-August, JJA) from 2013 to 2015. | Communications Earth & Environment

Fig. 1: Modern-day oceanography at Site U1475 during austral summer (December-January-February, DJF) and austral winter (June-July-August, JJA) from 2013 to 2015.

From: Strong glacial-interglacial variability in upper ocean hydrodynamics, biogeochemistry, and productivity in the southern Indian Ocean

Fig. 1

a Sea surface temperature (SST, °C) showing the study site (yellow star) and other core locations mentioned in the text (white circles), together with the Southern Ocean and the southern Indian Ocean fronts: Subtropical Front (STF), Subantarctic Front (SAF) and Polar Front (PF)2,74, and the schematic representation of the average surface ocean circulation (Agulhas Current, AC; Agulhas Return Current, ARC; Agulhas Leakage, AL)75. b Chlorophyll-α concentrations (mg m−3). c Coccolithophores (mg m−3). d Diatoms (mg m−3). Data, maps and visualisations were generated using the Giovanni online data system (https://giovanni.gsfc.nasa.gov/giovanni/) developed and maintained by the National Aeronautics and Space Administration Goddard Earth Sciences Data and Information Services Center (NASA GES DISC)30. The SST and chlorophyll data are derived from Moderate Resolution Imaging Spectroradiometer on the Aqua satellite (MODIS-Aqua) provided to Giovanni by the Ocean Biology Distributed Active Archive Center (OB.DAAC). The coccolithophore and diatom data are from the NASA Ocean Biogeochemical Model (NOBM)76.

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