Indian Ocean Sea Surface Temperature Reconstruction for last 150,000 years Bard, E.; Rostek, F.; Sonzogni., C. Bard, E. Rostek, F. Sonzogni., C. Sea Surface Temperature Reconstruction earth science/paleoclimate/paleoceanography (age,null,null,calendar year before present,null,paleoceanography,null,null,N,null) earth science/paleoclimate/climate reconstructions|paleoceanography (sea surface temperature,alkenone unsaturation index,null,degree Celsius,null,climate reconstructions|paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (depth,null,null,centimeter,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean (MD85668>LATITUDE -.02>LONGITUDE 46.03) (MD79257>LATITUDE -20.4>LONGITUDE 36.33) (MD90963>LATITUDE 5.07>LONGITUDE 73.88) (MD85674>LATITUDE 3.18>LONGITUDE 50.43) (TY93-929/P>LATITUDE 13.7>LONGITUDE 53.25) The relative timings of the last deglacial warming in the Southern and Northern hemispheres are not well constrained, but are a crucial component in understanding the mechanisms of deglaciation. A clearer picture of the degree of interhemispheric synchrony has been obscured by a dearth of high-resolution temperature records that can be tied to the absolute calendar timescale. Moreover, the quantification of tropical temperatures during the last glacial cycle is controversial. Here we apply the alkenone method of sea surface temperature reconstruction to several high-resolution sediment cores recovered from the tropical Indian Ocean between 20° N and 20° S. The inferred initial sea surface temperature warming ~15,000 calendar years ago at 20° S is in phase with Northern Hemisphere sea (this study) and air temperature changes, but lags Antarctic warming by several millennia. This finding, along with the results of recent modelling studies, provides strong support for the idea that changes in the ocean's global thermohaline circulation were not the only cause of interhemispheric climate teleconnection during the last deglaciation NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Bard, E. Investigator : Rostek, F. Investigator : Sonzogni., C. 2003-03-01 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/9040 https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/md85674-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/m85668eb-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/md79257-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/syntrace/t21data/t93929-p-sytr-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/bard1997 https://www1.ncdc.noaa.gov/pub/data/paleo/syntrace/t21data/m85668eb-sytr-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/syntrace/t21data/md85674-sytr-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/t93929-p-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/syntrace/t21data/md79257-sytr-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/md90963-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/md85674-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/m85668eb-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/md79257-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/syntrace/t21data/t93929-p-sytr-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/bard1997 https://www1.ncdc.noaa.gov/pub/data/paleo/syntrace/t21data/m85668eb-sytr-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/syntrace/t21data/md85674-sytr-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/t93929-p-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/syntrace/t21data/md79257-sytr-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/md90963-tab.txt English https://www.ncdc.noaa.gov/paleo/study/9040 https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/md85674-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/m85668eb-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/md79257-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/syntrace/t21data/t93929-p-sytr-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/bard1997 https://www1.ncdc.noaa.gov/pub/data/paleo/syntrace/t21data/m85668eb-sytr-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/syntrace/t21data/md85674-sytr-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/t93929-p-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/syntrace/t21data/md79257-sytr-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/md90963-tab.txt Bard, E., F. Rostek, and C. Sonzogni. 1997. Interhemispheric synchrony of the last deglaciation inferred from alkenone palaeothermometry. Nature 385, 707-710 Rostek, F., G. Ruhland, F. Bassinot, P.J. Mueller, L. Labeyrie, Y. Lancelot, and E. Bard. 1993. Reconstructing sea surface temperature and salinity using d18O and alkenone records. Nature, 364, 319-321. Rostek, F., E. Bard, L. Beaufort, C. Sonzogni, and G. Ganssen1997Sea surface temperature and productivity records for the past 240 kyr in the Arabian SeaDeep Sea Research II441461-1480 START YEAR: 171400 cal yr BP * END YEAR: 0 cal yr BP 36.33 -20.4 73.88 13.7