Ford Heather L h.ford@qmul.ac.uk 0000-0002-8081-7023 Ravelo Ana Christina acr@ucsc.edu 0000-0003-3929-677X Polissar Pratigya J 0000-0001-5483-1625 2015 Individual foraminifera variability from the western and eastern equatorial Pacific during the Late Holocene and Last Glacial Maximum dataset publication series https://doi.org/10.1594/PANGAEA.841638 2015-01-19T11:21:37 Ford Heather L h.ford@qmul.ac.uk 0000-0002-8081-7023 Ravelo Ana Christina acr@ucsc.edu 0000-0003-3929-677X Polissar Pratigya J 0000-0001-5483-1625 2015 Reduced El Nino-Southern Oscillation during the Last Glacial Maximum journal article Science 347(6219) https://doi.org/10.1126/science.1258437 255-258 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. -110.51971 159.361 0.18305 0.319 24.420644999999986 0.25102499999999994 1990-02-17T20:45:00 1991-06-07T23:25:00 ODP Ocean Drilling Program https://www-odp.tamu.edu:443/ Ocean Drilling Program, Texas A&M University ODP http://www-odp.tamu.edu/ https://ror.org/01f5ytq51 130-806A 0.319 159.361 North Pacific Ocean -2520.7 1990-02-17T20:45:00 1990-02-18T21:00:00 Leg130 Leg130 1990-01-18T00:00:00 1990-01-18 1990-03-26T00:00:00 1990-03-26 Joides Resolution https://www-odp.tamu.edu:443/resolutn.html Berger, Wolfgang H Berger, Wolfgang H doi:10.2973/odp.proc.ir.130.1991 Joides Resolution https://www-odp.tamu.edu:443/resolutn.html Drilling/drill rig DRILL 83.7 m 85.95 m 9 cores; 83.7 m cored; 0 m drilled; 102.7 % recovery 138-849A 0.18305 -110.51971 North Pacific Ocean -3837.1 1991-06-07T15:49:00 1991-06-07T23:25:00 Leg138 Leg138 1991-05-06T00:00:00 1991-05-06 1991-07-05T00:00:00 1991-07-05 Joides Resolution https://www-odp.tamu.edu:443/resolutn.html Mayer, Larry A Mayer, Larry A Pisias, Nicklas G Pisias, Nicklas G doi:10.2973/odp.proc.ir.138.1992 Joides Resolution https://www-odp.tamu.edu:443/resolutn.html Drilling/drill rig DRILL 8.7 m 8.69 m 1 core; 8.7 m cored; 0 m drilled; 99.9 % recovery 4 CC-BY-3.0 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/ Sample code/label | Sample label | DSDP/ODP/IODP sample designation | Sample ID | Timeslice | Globigerinoides sacculifer, Magnesium/Calcium ratio | G. sacculifer Mg/Ca | Measured | Magnesium/Calcium ratio, standard deviation | Mg/Ca std dev | Delta[CO3]2- values for the Mg/Ca dissolution correction = 5.69 mmol/kg | Mg/Ca correction (Regenberg et al. 2006) | with Regenberg correction | Sea surface temperature | SST | Calculated, according to Anand et al. (2003) | Delta[CO3]2- values for the Mg/Ca dissolution correction = -13.06 mmol/kg | Globorotalia tumida, Magnesium/Calcium ratio | G. tumida Mg/Ca | Sub-surface temperature | SubT | Calculated from Mg/Ca ratios (Mohtadi et al. 2011) supplement citable method420 method5059 method5221 method8297 method8733 param103531 param120157 param16065 param790 param81604 param88542 param89914 param97830 pi52313 author25054 author52313 author53705 basis5 campaign102 campaign110 campaign3383392 campaign3383403 event31144 event31262 geocode1599 geocode1600 geocode1601 geocode8128 inst34 journal14481 license101 method10974 project3 ref66977 term23838