Tropical Pacific Geochemistry Data and SST Reconstructions for the Late Holocene and Last Glacial Maximum Ford, H.L.; Ravelo, A.C.; Polissar, P.J. Ford, H.L. Ravelo, A.C. Polissar, P.J. ENSO Sea Surface Temperature Reconstruction earth science/paleoclimate/paleoceanography (magnesium/calcium,Globorotalia tumida,null,millimole per mole,null,paleoceanography,null,inductively-coupled plasma atomic emission spectroscopy,N,null) earth science/paleoclimate/paleoceanography (notes,null,null,null,null,paleoceanography,null,null,C,null) earth science/paleoclimate/climate reconstructions|paleoceanography (sea water temperature,magnesium/calcium,null,degree Celsius,null,climate reconstructions|paleoceanography,null,null,N,using Mohtadi et al. 2011; Globorotalia tumida; temperature at ~100 m) earth science/paleoclimate/paleoceanography (magnesium/calcium,Trilobatus sacculifer,null,millimole per mole,null,paleoceanography,corrected,null,N,correction: dissolution from Regenberg et al. (2006)) earth science/paleoclimate/paleoceanography (magnesium/calcium,Trilobatus sacculifer,null,millimole per mole,null,paleoceanography,null,inductively-coupled plasma atomic emission spectroscopy,N,LA-ICP-MS or ICP-OES) earth science/paleoclimate/paleoceanography (magnesium/calcium,Trilobatus sacculifer,one standard deviation,millimole per mole,null,paleoceanography,null,null,N,null) earth science/paleoclimate/climate reconstructions|paleoceanography (sea surface temperature,magnesium/calcium,null,degree Celsius,null,climate reconstructions|paleoceanography,null,null,N,using Anand et al. 2003; Mg/Ca Globigerinoides sacculifer) earth science/paleoclimate/paleoceanography (notes,null,null,null,null,paleoceanography,null,null,C,Time Slice name) earth science/paleoclimate/paleoceanography (depth,null,null,centimeter,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean (ODP 849>LATITUDE .18>LONGITUDE -110.52) (ODP 806>LATITUDE .318333>LONGITUDE 159.361667) El Niño–Southern Oscillation (ENSO) is a major source of global interannual variability, but its response to climate change is uncertain. Paleoclimate records from the Last Glacial Maximum (LGM) provide insight into ENSO behavior when global boundary conditions (ice sheet extent, atmospheric partial pressure of CO2) were different from those today. In this work, we reconstruct LGM temperature variability at equatorial Pacific sites using measurements of individual planktonic foraminifera shells. A deep equatorial thermocline altered the dynamics in the eastern equatorial cold tongue, resulting in reduced ENSO variability during the LGM compared to the Late Holocene. These results suggest that ENSO was not tied directly to the east-west temperature gradient, as previously suggested. Rather, the thermocline of the eastern equatorial Pacific played a decisive role in the ENSO response to LGM climate. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Ford, H.L. Investigator : Ravelo, A.C. Investigator : Polissar, P.J. 2015-04-17 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/18396 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ford2015/ford2015-odp806.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ford2015/ford2015-odp849.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ford2015/ford2015-odp806.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ford2015/ford2015-odp849.txt English https://www.ncdc.noaa.gov/paleo/study/18396 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ford2015/ford2015-odp806.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ford2015/ford2015-odp849.txt Ford, Heather L., A. Christina Ravelo, and Pratigya J. Polissar2015Reduced El Niño–Southern Oscillation during the Last Glacial MaximumScience3476219255-25810.1126/science.1258437http://www.sciencemag.org/content/347/6219/255.full.pdf START YEAR: 21500 cal yr BP * END YEAR: 2800 cal yr BP -110.52 .18 159.361667 .318333