Fig. 3: Environmental proxies of core LV76-16-1 and comparison with global and regional climate proxies. | Nature Communications

Fig. 3: Environmental proxies of core LV76-16-1 and comparison with global and regional climate proxies.

From: Ice sheet and precession controlled subarctic Pacific productivity and upwelling over the last 550,000 years

Fig. 3: Environmental proxies of core LV76-16-1 and comparison with global and regional climate proxies.

a Atmospheric CO2 concentrations (pCO2) from the Antarctic records1,66. b Sedimentary Ba/Fe from ODP Site 1094 as a proxy of productivity and upwelling in the Antarctic zone of the Southern Ocean4. c Upwelling index of IODP Site U134314. d Upwelling index of core LV76-16-1. e X-ray fluorescence (XRF) scanning Ca/Ti ratio of core LV76-16-1. f Simulated annual mean North Pacific westerlies (35°N-55°N, 120°E-240°E, normalized) at 500 hPa (see the Methods for description). The blue bars represent the strongest upwelling which correspond to each major glacial termination. The yellow bars denote the moderate upwelling. Source data are provided as a Source Data file.

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