# Eastern Equatorial Pacific d18O and d13C Data from the Last Glacial Maximum #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # Template Version 3.0 # Encoding: UTF-8 # NOTE: Please cite original publication, online resource and date accessed when using this data. # If there is no publication information, please cite Investigator, title, online resource and date accessed. # # Description/Documentation lines begin with # # Data lines have no # # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/25611 # Description: NOAA Landing Page # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ford2018/ford2018-849-08jc-17jc.txt # Description: NOAA location of the template # # Data_Type: Paleoceanography # # Dataset_DOI: # # Parameter_Keywords: oxygen isotopes, carbon isotopes #--------------------------------------- # Contribution_Date # Date: 2018-11-09 #--------------------------------------- # File_Last_Modified_Date # Date: 2018-11-09 #--------------------------------------- # Title # Study_Name: Eastern Equatorial Pacific d18O and d13C Data from the Last Glacial Maximum #--------------------------------------- # Investigators # Investigators: Ford, H.L.; McChesney, C.L.; Hertzberg, J.E.; McManus, J.F. #--------------------------------------- # Description_Notes_and_Keywords # Description: #--------------------------------------- # Publication # Authors: Ford, H.L., C.L. McChesney, J.E. Hertzberg, and J.F. McManus # Published_Date_or_Year: 2018 # Published_Title: A Deep Eastern Equatorial Pacific Thermocline During the Last Glacial Maximum # Journal_Name: Geophysical Research Letters # Volume: 45 # Edition: # Issue: # Pages: # Report_Number: # DOI: 10.1029/2018GL079710 # Online_Resource: # Full_Citation: # Abstract: The mean state and variability of the tropical Pacific is influenced by the depth of the thermocline. During the Last Glacial Maximum (~21,000 years ago), the zonal sea surface temperature gradient across the equatorial Pacific was reduced and productivity was generally lower than modern. To understand the thermocline depth's role in determining the Last Glacial Maximum tropical mean state, we reconstruct the upper ocean d18O profile from multiple species of planktic foraminifera. We synthesize existing records of surface and subsurface dwelling foraminifera to reconstruct the vertical d18O gradient throughout the eastern equatorial Pacific. We find the thermocline was deeper during the Last Glacial Maximum than the Holocene throughout the eastern equatorial Pacific region. The thermocline depth's role in the dynamic forcing of the cold tongue contributed to the reduced zonal SST gradient across the equatorial Pacific, decreased productivity, and presumably impacted El Niño-Southern Oscillation variability relative to the Holocene. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: NSF # Grant: OCE-1436014, AGS-1502889, OCE-1359194, OCE-1450528 #--------------------------------------- # Funding_Agency # Funding_Agency_Name: NERC # Grant: NE/N015045/1 #--------------------------------------- # Site_Information # Site_Name: ODP849, 07MC-08JC, 09MC-17JC # Location: Eastern Pacific Ocean # Country: # Northernmost_Latitude: 6.234 # Southernmost_Latitude: -0.6938 # Easternmost_Longitude: -85.3333 # Westernmost_Longitude: -110.5197 # Elevation: #--------------------------------------- # Data_Collection # Collection_Name: ODP849, 07MC-08JC, 09MC-17JC d13C d18O Ford2018 # First_Year: 24734 # Last_Year: 0 # Time_Unit: cal yr BP # Core_Length: # Notes: Collection from cores: ODP849B, 07MC-08JC, 09MC-17JC #--------------------------------------- # Chronology_Information # Chronology: #--------------------------------------- # Variables # Data variables follow that are preceded by "##" in columns one and two. # Variables list, one per line, shortname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) ## Location notes,,,,,paleoceanography,,,C,site name ## Longitude longitude,,,degree east,,paleoceanography,,,N, ## Latitude latitude,,,degree north,,paleoceanography,,,N, ## Elevation_m collection water depth,,,meter,,paleoceanography,,,N, ## Sample_label sample identification,,,,,paleoceanography,,,C, ## Age age,,,calendar year before present,,paleoceanography,,,N, ## G.menardii_d13C delta 13C,Globorotalia menardii,,per mil PDB,,paleoceanography,,,N, ## G.menardii_d18O delta 18O,Globorotalia menardii,,per mil PDB,,paleoceanography,,,N, ## G.ruber_d13C delta 13C,Globigerinoides ruber,,per mil PDB,,paleoceanography,,,N, ## G.ruber_d18O delta 18O,Globigerinoides ruber,,per mil PDB,,paleoceanography,,,N, ## T.sacculifer_d13C delta 13C,Trilobatus sacculifer,,per mil PDB,,paleoceanography,,,N, ## T.sacculifer_d18O delta 18O,Trilobatus sacculifer,,per mil PDB,,paleoceanography,,,N, ## N.dutertrei_d13C delta 13C,Neogloboquadrina dutertrei,,per mil PDB,,paleoceanography,,,N, ## N.dutertrei_d18O delta 18O,Neogloboquadrina dutertrei,,per mil PDB,,paleoceanography,,,N, ## G.inflata_d13C delta 13C,Globorotalia inflata,,per mil PDB,,paleoceanography,,,N, ## G.inflata_d18O delta 18O,Globorotalia inflata,,per mil PDB,,paleoceanography,,,N, ## G.tumida_d13C delta 13C,Globorotalia tumida,,per mil PDB,,paleoceanography,,,N, ## G.tumida_d18O delta 18O,Globorotalia tumida,,per mil PDB,,paleoceanography,,,N, ## P.obliqu_d13C delta 13C,Pulleniatina obliquiloculata,,per mil PDB,,paleoceanography,,,N, ## P.obliqu_d18O delta 18O,Pulleniatina obliquiloculata,,per mil PDB,,paleoceanography,,,N, #------------------------ # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing_Values: NaN Location Longitude Latitude Elevation_m Sample_label Age G.menardii_d13C G.menardii_d18O G.ruber_d13C G.ruber_d18O T.sacculifer_d13C T.sacculifer_d18O N.dutertrei_d13C N.dutertrei_d18O G.inflata_d13C G.inflata_d18O G.tumida_d13C G.tumida_d18O P.obliqu_d13C P.obliqu_d18O 138-849B -110.52 0.183 -3839 138-849B-1H-1,5-8 2.8 1.43 0.2 1.631 -1.63 2.638 -1.214 1.502 0.651 1.068 0.221 1.677 0.688 1.192 -0.316 138-849B -110.52 0.183 -3839 138-849B-1H-1,5-8 2.8 NaN NaN NaN NaN NaN NaN 1.584 0.426 NaN NaN NaN NaN NaN NaN 138-849B -110.52 0.183 -3839 138-849B-1H-1,15-18 3.412 1.471 -0.621 1.47 -1.386 2.449 -1.369 1.553 0.604 1.089 0.256 1.847 0.521 1.187 -0.364 138-849B -110.52 0.183 -3839 138-849B-1H-1,15-18 3.412 NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN 1.145 -0.312 138-849B -110.52 0.183 -3839 138-849B-1H-1,67-70 20.654 1.603 1.129 1.242 -0.164 1.57 0.363 1.35 1.471 1.202 0.81 1.535 1.904 1.119 0.931 138-849B -110.52 0.183 -3839 138-849B-1H-1,67-70 20.654 NaN NaN NaN NaN NaN NaN 1.737 1.466 NaN NaN 1.505 1.56 NaN NaN 138-849B -110.52 0.183 -3839 138-849B-1H-1,74-80 22.834 2.14 0.517 1.433 0.018 1.607 0.086 1.845 1.266 0.88 0.904 2.031 1.013 1.083 0.642 138-849B -110.52 0.183 -3839 138-849B-1H-1,74-80 22.834 NaN NaN NaN NaN NaN NaN 1.79 1.119 NaN NaN 2.019 1.284 NaN NaN Cocos_07MC-08JC -86.0435 6.234 -1993 Cocos_07MC-08JC,0.5 0 NaN NaN NaN -3.079 NaN NaN NaN -0.24 NaN NaN NaN NaN NaN NaN Cocos_07MC-08JC -86.0435 6.234 -1993 Cocos_07MC-08JC,4.25 2.386 NaN NaN NaN -2.513 NaN NaN NaN -0.473 NaN NaN NaN NaN NaN NaN Cocos_07MC-08JC -86.0435 6.234 -1993 Cocos_07MC-08JC,7.5 3.533 NaN NaN NaN -2.549 NaN NaN NaN -0.703 NaN NaN NaN NaN NaN NaN Cocos_07MC-08JC -86.0435 6.234 -1993 Cocos_07MC-08JC,77 20.197 NaN NaN NaN -0.962 NaN NaN NaN 0.799 NaN NaN NaN NaN NaN NaN Cocos_07MC-08JC -86.0435 6.234 -1993 Cocos_07MC-08JC,84 21.361 NaN NaN NaN -0.925 NaN NaN NaN 0.968 NaN NaN NaN NaN NaN NaN Cocos_07MC-08JC -86.0435 6.234 -1993 Cocos_07MC-08JC,92 22.521 NaN NaN NaN -0.65 NaN NaN NaN 0.98 NaN NaN NaN NaN NaN NaN Cocos_07MC-08JC -86.0435 6.234 -1993 Cocos_07MC-08JC,99 23.536 NaN NaN NaN -0.937 NaN NaN NaN 1.022 NaN NaN NaN NaN NaN NaN Cocos_07MC-08JC -86.0435 6.234 -1993 Cocos_07MC-08JC,106 24.551 NaN NaN NaN -1.169 NaN NaN NaN 0.905 NaN NaN NaN NaN NaN NaN Carnegie_09MC-17JC -85.3333 -0.6938 -2452 Carnegie_09MC-17JC,0.5 0 NaN NaN NaN -1.994 NaN NaN NaN 0.119 NaN NaN NaN NaN NaN NaN Carnegie_09MC-17JC -85.3333 -0.6938 -2452 Carnegie_09MC-17JC,6 3.546 NaN NaN NaN -1.593 NaN NaN NaN 0.234 NaN NaN NaN NaN NaN NaN Carnegie_09MC-17JC -85.3333 -0.6938 -2452 Carnegie_09MC-17JC,10 4.515 NaN NaN NaN -1.867 NaN NaN NaN 0.491 NaN NaN NaN NaN NaN NaN Carnegie_09MC-17JC -85.3333 -0.6938 -2452 Carnegie_09MC-17JC,295 22.782 NaN NaN NaN -0.422 NaN NaN NaN 1.35 NaN NaN NaN NaN NaN NaN Carnegie_09MC-17JC -85.3333 -0.6938 -2452 Carnegie_09MC-17JC,320 24.734 NaN NaN NaN -0.499 NaN NaN NaN 1.749 NaN NaN NaN NaN NaN NaN