Report

Regional and global sea-surface temperatures during the last interglaciation

See allHide authors and affiliations

Science  20 Jan 2017:
Vol. 355, Issue 6322, pp. 276-279
DOI: 10.1126/science.aai8464

You are currently viewing the figures only.

View Full Text

Log in to view the full text

Log in through your institution

Log in through your institution

  1. Fig. 1 Last interglacial proxy-based sea-surface temperature stacks, site locations, and climate context.

    (A) Site locations and types of proxy SST estimates included in this study. Symbols correspond to microfossil transfer functions (red triangles), Mg/Ca of planktonic foraminifera (green squares), and UK′37 (blue circles). (B) Histogram relating the number of LIG proxy records to 15° latitude bins. (C) Contour plot of annual mean latitudinal insolation anomalies between 130 ka and 115 ka, relative to insolation at 115 ka. (D) Ice-core records of atmospheric CO2 concentrations on Antarctic Ice Core Chronology 2012 (AICC2012) time scale, with one standard deviation on measurement. Symbols indicate records from EPICA Dome C (EDC) ice core (green diamonds) (30), Talos Dome ice core (red circles) (31), and EPICA Dronning Maud Land (EDML) ice core (blue squares) (31). (E) The global LIG 5° × 5° gridded, area-weighted mean annual SST stack relative to the HadISST1.1 1870–1889 mean (black line) and the HadISST1.1 1995–2014 mean (green line). (F) Extratropical (>23.5°N-S) mean annual SST stacks relative to the HadISST1.1 1870–1889 data. Dark blue, NH extratropics; light blue, SH extratropics. (G) The tropical (23.5°N-S) mean annual SST stack relative to the HadISST1.1 1870–1889 data. (H) The North Atlantic (NATL) and South Atlantic (SATL) extratropical mean annual SST stacks (sites >23.5°N-S within the Atlantic basin) relative to the HadISST1.1 1870–1889 data. The proxy-based SST stacks and their uncertainty are the 5° × 5° gridded, area-weighted mean and 2σ uncertainties of 1000 realizations used to construct the stacks.

  2. Fig. 2 Maps of proxy-based sea-surface temperature anomalies for three different times during the last interglaciation.

    (A) Distribution and proxy-based mean annual SST anomalies relative to HadISST1.1 1870–1889 data at 129 ka, with the mean proxy-based SST anomaly uncertainty shown in the bottom left corner. Symbols correspond to microfossil transfer functions (inverted triangles), Mg/Ca of planktonic foraminifera (squares), and UK′37 (circles). (B) Same as in (A), but for 125 ka. (C) Same as in (A), but for 120 ka.

  3. Fig. 3 Proxy-based sea-surface temperature anomalies by latitude for three different times during the last interglaciation.

    (A) Global proxy-based mean annual SST anomalies with their uncertainties relative to HadISST1.1 1870–1889 data at 129 ka plotted against core-site latitude. Symbols correspond to microfossil transfer functions (red triangles), Mg/Ca of planktonic foraminifera (green squares), and UK′37 (blue circles). Yellow lines and shading are the fit of a 2nd-order polynomial to the data and its 95% simultaneous functional bounds. (B) Same as in (A), but for 125 ka. (C) Same as in (A), but for 120 ka. (D) Same as in (A), but only those records within the Atlantic basin are plotted. (E) Same as in (D), but for 125 ka. (F) Same as in (D), but for 120 ka.