Southeast Atlantic Alkenone Sea Surface Temperature Reconstruction ----------------------------------------------------------------------- World Data Center for Paleoclimatology, Boulder and NOAA Paleoclimatology Program ----------------------------------------------------------------------- NOTE: PLEASE CITE CONTRIBUTORS WHEN USING THIS DATA!!!!! NAME OF DATA SET: Southeast Atlantic Alkenone Sea Surface Temperature Reconstruction LAST UPDATE: 5/2006 (Original receipt by WDC Paleo) CONTRIBUTOR: Julian P. Sachs, University of Washington IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2006-053 SUGGESTED DATA CITATION: Sachs, J.P. et al. 2006. Southeast Atlantic Alkenone Sea Surface Temperature Reconstruction. IGBP PAGES/World Data Center for Paleoclimatology Data Contribution Series # 2006-053. NOAA/NCDC Paleoclimatology Program, Boulder CO, USA. ORIGINAL REFERENCE: Sachs, J.P., R.F. Anderson, and S.J. Lehman. 2001. Glacial Surface Temperatures of the Southeast Atlantic Ocean. Science, Vol. 293, pp. 2077 - 2079, 14 September 2001. ABSTRACT: A detailed record of sea surface temperature from sediments of the Cape Basin in the subtropical South Atlantic indicates a previously undocumented progression of marine climate change between 41 and 18 thousand years before the present (ky B.P.), during the last glacial period. Whereas marine records typically indicate a long-term cooling into the Last Glacial Maximum (around 21 ky B.P.) consistent with gradually increasing global ice volume, the Cape Basin record documents an interval of substantial temperate ocean warming from 41 to 25 ky B.P. The pattern is similar to that expected in response to changes in insolation owing to variations in Earth's tilt. GEOGRAPHIC REGION: Cape Basin, subtropical South Atlantic PERIOD OF RECORD: 41 - 10 KYrBP FUNDING SOURCE: National Science Foundation (USA). DESCRIPTION: Sea surface temperatures (SSTs) were determined in core TN057-21-PC2 (41°089S, 7°499E; 4981 m water depth) by the alkenone paleotemperature technique using previously established protocols (Sachs and Lehman 1999, Science 286, 756) and the temperature calibration of Prahl et al. 1998 (Geochim. Cosmochim. Acta 52, 2303) Age model from Stoner et al (2000), EPSL, Vol. 183: 161-177. DATA: AgeKYr SST°C 10.4 18.61 10.52 18.65 10.65 18.83 10.77 18.65 10.89 18.74 11.01 18.66 11.14 18.43 11.28 18.47 11.41 18.59 11.54 18.51 11.68 18.43 11.82 18.36 11.95 18.35 12.09 18.22 12.24 18.01 12.39 17.92 12.54 18.15 12.7 17.68 12.85 17.43 13 17.4 13.16 17.19 13.33 17.33 13.5 17.34 13.68 17.42 13.85 17.31 14.03 16.93 14.2 16.76 14.38 17.19 14.55 16.91 14.72 16.78 14.9 16.7 15.07 16.8 15.24 16.41 15.41 16.49 15.58 16.19 15.74 16.34 15.9 15.95 16.06 15.77 16.21 15.7 16.37 15.45 16.53 15.42 16.67 15.12 16.8 14.8 16.94 14.35 17.07 14.63 17.2 14.34 17.33 14.71 17.45 14.25 17.56 13.8 17.66 13.85 17.75 13.78 17.83 14.05 17.91 14.05 18 14.03 18.08 13.82 18.16 14.27 18.21 14.03 18.25 13.97 18.3 14.36 18.35 14.48 18.39 14.44 18.44 14.31 18.48 14.13 18.53 14.04 18.58 14.26 18.63 14.23 18.68 14.06 18.73 13.89 18.78 13.6 18.84 13.7 18.89 13.61 18.96 13.85 19.03 13.81 19.09 13.83 19.16 13.79 19.23 13.44 19.34 13.46 19.44 13.66 19.56 13.91 19.69 14.29 19.83 14.31 19.97 14.52 20.1 14.65 20.24 14.84 20.38 14.8 20.52 14.84 20.67 14.92 20.81 14.96 20.95 14.93 21.09 15.11 21.23 15.17 21.32 15.39 21.41 15.14 21.5 15.2 21.59 15.22 21.67 15.56 21.75 15.4 21.84 15.57 21.92 15.74 22 15.74 22.07 15.7 22.15 15.85 22.23 15.88 22.31 15.67 22.39 15.13 22.46 14.53 22.54 14.49 22.62 14.48 22.7 14.79 22.77 14.72 22.85 14.86 22.93 15.16 23.01 15.28 23.08 15.6 23.16 15.52 23.24 15.21 23.31 15.27 23.39 15.03 23.47 15.02 23.55 15.12 23.62 15.15 23.7 15.32 23.78 15.18 23.86 15.37 23.94 15.41 24.01 15.52 24.1 15.24 24.18 15.59 24.26 15.66 24.34 15.61 24.42 15.73 24.51 16.04 24.59 16.14 24.76 16.23 24.85 16.12 24.93 16.42 25.02 16.12 25.11 16.26 25.2 16.19 25.24 15.85 25.29 16.02 25.33 15.8 25.38 15.89 25.42 15.95 25.47 15.99 25.51 15.96 25.56 16.22 25.6 16.22 25.65 16 25.69 15.94 25.74 16.14 25.78 15.81 25.83 15.87 25.88 15.86 25.92 15.71 25.97 15.76 26.02 15.85 26.06 15.66 26.11 15.94 26.16 15.78 26.21 15.57 26.25 15.47 26.3 15.23 26.35 15.04 26.39 14.97 26.44 14.95 26.49 15.16 26.54 15.13 26.59 15.21 26.64 15.52 26.69 15.61 26.75 15.7 26.8 15.95 26.85 16.17 26.9 16.3 26.95 16.09 27.01 16.18 27.06 16.14 27.11 15.9 27.16 15.68 27.22 15.67 27.28 15.82 27.35 15.5 27.42 15.34 27.49 15.16 27.56 14.79 27.64 15.22 27.73 15.28 27.82 15.39 27.91 15.26 28 15.48 28.09 15.65 28.18 15.69 28.27 15.68 28.36 15.69 28.45 15.48 28.55 15.47 28.64 15.49 28.74 15.52 28.84 15.9 28.94 15.48 29.03 15.41 29.13 15.47 29.23 15.39 29.33 15.5 29.42 15.34 29.5 15.38 29.54 15.34 29.57 15.35 29.61 15.4 29.64 15.36 29.68 15.3 29.71 15.37 29.75 15.42 29.79 15.39 29.82 15.41 29.89 15.49 29.93 15.22 29.97 15.26 30 15.38 30.05 15.33 30.12 15.16 30.18 15.01 30.25 15.1 30.32 15.27 30.4 15.3 30.52 15.21 30.63 15.19 30.75 14.99 30.87 14.68 30.98 15.01 31.07 14.87 31.17 14.83 31.26 14.88 31.36 15.01 31.44 15.02 31.51 14.97 31.57 15.03 31.63 15.02 31.69 14.92 31.76 15.07 31.82 15.14 31.88 15.42 31.95 15.55 32.01 15.45 32.07 15.55 32.12 15.23 32.17 15 32.23 15.14 32.28 15.63 32.33 15.44 32.38 15.06 32.42 14.78 32.47 15.08 32.51 14.62 32.56 14.47 32.62 14.63 32.68 14.37 32.74 14.9 32.79 14.64 32.87 14.19 32.97 15.02 33.08 15.07 33.18 15.56 33.29 15.08 33.39 14.94 33.48 14.96 33.56 15.23 33.65 15.15 33.74 14.78 33.82 14.11 33.89 14.22 33.97 14.63 34.04 14.67 34.12 14.31 34.26 14.15 34.33 14.61 34.39 14.87 34.46 14.96 34.53 14.67 34.59 14.55 34.65 15.1 34.71 14.98 34.78 14.58 34.84 14.28 34.9 14.09 34.96 14.16 35.01 14.63 35.07 13.86 35.13 14.09 35.18 14.3 35.23 14.02 35.29 13.65 35.34 13.94 35.39 13.6 35.47 14.19 35.57 14.07 35.67 14.09 35.77 13.5 35.87 14.41 35.97 14.89 36.07 14.69 36.16 14.43 36.26 14.58 36.36 14.22 36.46 13.97 36.55 14.37 36.64 14.03 36.72 14.78 36.81 15.23 36.9 15.03 36.99 15.09 37.08 14.49 37.17 15.05 37.26 15.1 37.34 14.19 37.43 13.98 37.52 14.61 37.6 14.64 37.69 13.89 37.77 13.49 37.85 13.96 37.92 14.19 38 14.68 38.08 14.74 38.13 14.79 38.17 14.74 38.21 14.63 38.25 14.49 38.28 14.43 38.32 13.63 38.36 13.94 38.4 14.09 38.44 13.99 38.47 14.7 38.51 14.37 38.55 14.54 38.58 14.33 38.62 14.75 38.65 15.11 38.69 15.61 38.73 15.53 38.76 15.09 38.8 14.81 38.84 14.81 38.87 14.79 38.91 14.74 38.94 14.82 38.98 14.69 39.01 14.47 39.05 14.11 39.08 14.03 39.12 14.13 39.15 13.63 39.19 13.08 39.22 13.2 39.26 13.21 39.29 13.2 39.33 13.33 39.36 13.46 39.4 13.31 39.43 13.58 39.46 13.51 39.5 13.16 39.53 12.95 39.56 12.78 39.6 12.88 39.63 12.64 39.66 12.58 39.7 13.17 39.73 13.55 39.76 13.41 39.8 13.42 39.83 13.43 39.86 13.94 39.9 14.19 39.93 14.09 39.96 13.81 40 13.77 40.03 13.3 40.06 13.78 40.1 13.78 40.13 13.74 40.16 13.5 40.2 12.95 40.23 12.91 40.26 12.63 40.3 12.21 40.33 12.47 40.37 12.57 40.39 13.04 40.44 12.42 40.48 12.55 40.52 12.68 40.56 13.08 40.6 12.78 40.66 13.42 40.73 13.89 40.83 14.33 40.95 13.92 41.07 13.64 41.17 12.95