Fig. 5: South and North Pacific changes in temperature and ocean circulation since the late Miocene. | Nature Communications

Fig. 5: South and North Pacific changes in temperature and ocean circulation since the late Miocene.

From: South Pacific sea surface temperature and global ocean circulation changes since the late Miocene

Fig. 5: South and North Pacific changes in temperature and ocean circulation since the late Miocene.The alternative text for this image may have been generated using AI.

Temporal variation of alkenone-based sea surface temperatures (SSTUK’37) in a the Eastern South Pacific Ocean (U1543/PS97-114-2; this study) and b in the Northwest Pacific Ocean22 (ODP 882), c CaCO3 content at site U1543 based on XRF representing changes in deep water ventilation, d CaCO3 content in the North Pacific Ocean34 (ODP 882) representing changes in deep water ventilation, e meridional SST gradients between the eastern equatorial Pacific Ocean23 (ODP1337) and the Eastern South Pacific Ocean (U1543, this study), f meridional SST gradients between the eastern equatorial Pacific Ocean23 (ODP1337) and the NW Pacific Ocean22 (ODP 882) and g strength of the Antarctic Circumpolar Current (ACC) in the Central South Pacific (CSP) Ocean based on Zr/Rb ratios of site U1541 (Lamy et al.10; 5.3–8 Ma this study). The thick smoothed records represent 100 kyr-binned records by averaging the proxy data for every 100 kyrs in 50 kyr-overlapping windows. LMC late Miocene cooling, PTR Pliocene global temperature reversal, PWP Pliocene warm period, iNHG intensification of the Northern Hemisphere Glaciation, MPT mid-Pleistocene transition. Grey vertical bars denote periods of intensified ACC strength.

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