# Eastern Tropical Pacific 1,000 Year Foraminferal d18O and Mg/Ca SST #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program # National Centers for Environmental Information (NCEI) #----------------------------------------------------------------------- # # NOTE: Please cite Publication, and Online_Resource and date accessed when using these data. # If there is no publication information, please cite Investigators, Title, and Online_Resource and date accessed. # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/19874 # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/rustic2015/rustic2015.txt # # Original_Source_URL: http://www.nodc.noaa.gov/archive/arc0085/0142201/1.1/data/0-data/ # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Paleoceanography # # Parameter_Keywords: oxygen isotopes, geochemistry #-------------------- # Contribution_Date # Date: 2016-03-09 #-------------------- # Title # Study_Name: Eastern Tropical Pacific 1,000 Year Foraminferal d18O and Mg/Ca SST #-------------------- # Investigators # Investigators: Rustic, G.T.; Koutavas, A.; Marchitto, T.M.; Linsley, B.K. #-------------------- # Description_and_Notes # Description: Oxygen isotopes and Mg/Ca data from planktonic foraminifera, plus sea-surface temperature estimates, # from an eastern tropical Pacific sediment core, covering the past 1,000 years. These data include oxygen isotope # values from indivdual foraminfera from multi-core KNR195-5 MC42C, collected on 4/4/2009 from 615m depth by the R/V Knorr. # Also included are Mg/Ca ratios for aggregate foraminifera from the same samples. Mg/Ca ratios were used to reconstruct # mean SST. Oxygen isotope values were used to reconstruct SST variability. #-------------------- # Publication # Authors: Gerald T. Rustic, Athanasios Koutavas, Thomas M. Marchitto, Braddock K. Linsley # Published_Date_or_Year: 2015-12-18 # Published_Title: Dynamical excitation of the tropical Pacific Ocean and ENSO variability by Little Ice Age cooling # Journal_Name: Science # Volume: 350 # Edition: # Issue: 6267 # Pages: 1537-1541 # Report_Number: # DOI: 10.1126/science.aac9937 # Online_Resource: # Full_Citation: # Abstract: Tropical Pacific Ocean dynamics during the Medieval Climate Anomaly (MCA) and the Little Ice Age (LIA) are poorly characterized due to a lack of evidence from the eastern equatorial Pacific. We reconstructed sea surface temperature, El Niño-Southern Oscillation (ENSO) activity, and the tropical Pacific zonal gradient for the past millennium from Galápagos ocean sediments. We document a mid-millennium shift (MMS) in ocean-atmosphere circulation around 1500-1650 CE, from a state with dampened ENSO and strong zonal gradient to one with amplified ENSO and weak gradient. The MMS coincided with the deepest LIA cooling and was probably caused by a southward shift of the intertropical convergence zone. The peak of the MCA (900-1150 CE) was a warm period in the eastern Pacific, contradicting the paradigm of a persistent La Niña pattern. #------------------ # Funding_Agency # Funding_Agency_Name: US National Science Foundation # Grant: OCE-1103482 #------------------ # Site_Information # Site_Name: KNR195-5 MC42C # Location: Ocean>Pacific Ocean>Eastern Pacific Ocean # Country: # Northernmost_Latitude: -1.253 # Southernmost_Latitude: -1.253 # Easternmost_Longitude: -89.6855 # Westernmost_Longitude: -89.6855 # Elevation: -615 m #------------------ # Data_Collection # Collection_Name: Rustic2015 # Earliest_Year: 954 # Most_Recent_Year: 2009 # Time_Unit: AD # Core_Length: m # Notes: #------------------ # Chronology_Information # Chronology: # #---------------- # Variables # # Data variables follow are preceded by "##" in columns one and two. # Data line variables format: Variables list, one per line, shortname-tab-longname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) # ## ID Interval ID, , , , , , , ,N ## depth_cmtop depth top of sample, , , cm, , , , ,N ## depth_cmbot depth bottom of sample, , , cm, , , , ,N ## depth_cm depth, , , cm, , , middle of sample, ,N ## age_ADtop age top of sample, , , AD, , , , ,N ## age_ADbot age bottom of sample, , , AD, , , , ,N ## age_AD age, , , AD, , , middle of sample, ,N ## age_ADrange age range, , , AD, , , range of sample, ,C ## species Foraminifer species,,,,,,,,C ## Mg/Ca-g.rub Magnesium/Calcium ratio, Globigerinoides ruber, , mmol/mol, , paleoceanography, , ,N ## sst-mg/ca Sea surface temperature from Mg/Ca, , , degrees C, , Climate Reconstructions, , ,N ## sst-StD Sea surface temperature from Mg/Ca standard deviation, , , degrees C, , Climate Reconstructions, , ,N ## d18Og.rub delta O18, Globigerinoides ruber, , VPDB, ,paleoceanography, , ,N ## d18Og.rubSEM delta O18 Standard Error of the Mean, Globigerinoides ruber, , VPDB, , paleoceanography, , ,N ## d18Og.rubStD delta O18 Standard Deviation, Globigerinoides ruber, , VPDB, , paleoceanography, , ,N ## d18Og.rubVar delta O18 Variance, Globigerinoides ruber, , VPDB, ,paleoceanography, , ,N ## d18Og.rubSEV delta O18 Standard Error of the Variance, Globigerinoides ruber, , VPDB, , paleoceanography, , ,N ## sst-grad Sea surface temperature West-East Gradient, , , degrees C, , Climate Reconstructions, , ,N ## sst-grad-err Sea surface temperature West-East Gradient error (cumulative), , , degrees C, , Climate Reconstructions, , ,N ## d13Cg.rub delta C13, Globigerinoides ruber, , VPDB, , paleoceanography, , ,N ## d13Cg.rubSEM delta C13 Standard Error of the Mean, Globigerinoides ruber, , VPDB, , paleoceanography, , ,N # #---------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Values: -9999 # Summary Mg/Ca and d18O data from multicore KNR195-5 MC42C # ID depth_cmtop depth_cmbot depth_cm age_ADtop age_ADbot age_AD age_ADrange species Mg/Ca-g.rub sst-mg/ca sst-std d18Og.rub d18Og.rubSEM d18Og.rubStD d18Og.rubVar d18Og.rubSEV sst-grad sst-grad-err d13Cg.rub d13Cg.rubSEM 1 0.00 0.31 0.16 2009 1987 1998 1987-2009 Globigerinoides ruber 3.0079 22.99 0.126 -1.781 0.079 0.493 0.243 0.056 -9999 -9999 1.359 0.075 2 0.31 0.76 0.54 1987 1956 1972 1956-1987 Globigerinoides ruber 2.9007 22.58 0.163 -1.926 0.069 0.519 0.270 0.051 -9999 -9999 1.485 0.052 3 0.76 1.14 0.95 1956 1929 1943 1929-1956 Globigerinoides ruber 2.8888 22.54 0.182 -1.975 0.065 0.492 0.242 0.045 5.70 0.31 1.407 0.063 4 1.14 1.60 1.37 1929 1896 1913 1896-1929 Globigerinoides ruber 2.697 21.77 0.378 -1.689 0.057 0.437 0.191 0.035 6.23 0.50 1.427 0.052 5 1.60 2.24 1.92 1896 1852 1874 1852-1896 Globigerinoides ruber 2.8123 22.24 0.147 -1.848 0.068 0.501 0.251 0.048 5.84 0.31 1.427 0.053 6 2.24 2.74 2.49 1852 1816 1834 1816-1852 Globigerinoides ruber 2.8586 22.42 0.220 -1.809 0.064 0.467 0.218 0.042 5.22 0.38 1.519 0.051 7 2.74 3.31 3.02 1816 1777 1797 1777-1816 Globigerinoides ruber 2.8868 22.53 0.404 -1.910 0.073 0.565 0.319 0.059 5.29 0.58 1.473 0.043 8 3.31 3.82 3.56 1777 1740 1759 1740-1777 Globigerinoides ruber 2.711 21.83 0.165 -1.847 0.080 0.564 0.318 0.064 6.02 0.29 1.434 0.057 9 3.82 4.41 4.11 1740 1699 1720 1699-1740 Globigerinoides ruber 2.8102 22.23 0.209 -1.882 0.053 0.394 0.156 0.030 5.21 0.32 1.543 0.043 10 4.41 4.94 4.67 1699 1662 1681 1662-1699 Globigerinoides ruber 2.9358 22.70 0.731 -1.764 0.070 0.518 0.269 0.052 4.85 0.85 1.476 0.049 11 4.94 5.48 5.21 1662 1625 1644 1625-1662 Globigerinoides ruber 2.8608 22.43 0.076 -1.795 0.066 0.473 0.224 0.045 5.43 0.21 1.424 0.054 12 5.48 6.25 5.87 1625 1587 1606 1587-1625 Globigerinoides ruber 2.7267 21.90 0.154 -1.803 0.072 0.517 0.268 0.053 6.17 0.29 1.566 0.046 13 6.25 6.73 6.49 1587 1565 1576 1565-1587 Globigerinoides ruber 2.8042 22.21 0.071 -1.793 0.068 0.512 0.263 0.050 5.69 0.17 1.606 0.046 14 6.73 7.37 7.05 1565 1532 1548 1532-1565 Globigerinoides ruber 2.7012 21.79 0.307 -1.828 0.050 0.387 0.150 0.028 6.10 0.40 1.565 0.041 15 7.37 8.13 7.75 1532 1495 1514 1495-1532 Globigerinoides ruber 2.7385 21.94 0.245 -1.883 0.056 0.423 0.179 0.033 6.10 0.37 1.655 0.031 16 8.13 8.65 8.39 1495 1459 1477 1459-1495 Globigerinoides ruber 2.679 21.70 0.406 -1.742 0.062 0.466 0.218 0.041 6.49 0.54 1.641 0.039 17 8.65 9.23 8.94 1459 1405 1432 1405-1459 Globigerinoides ruber 2.6872 21.73 0.148 -1.779 0.058 0.432 0.187 0.036 6.42 0.30 1.646 0.041 18 9.23 9.97 9.60 1405 1336 1371 1336-1405 Globigerinoides ruber 2.7177 21.86 0.356 -1.743 0.056 0.413 0.171 0.033 6.34 0.47 1.657 0.037 19 9.97 10.59 10.28 1336 1279 1308 1279-1336 Globigerinoides ruber 2.7615 22.04 0.147 -1.757 0.056 0.416 0.173 0.033 6.25 0.23 1.680 0.050 20 10.59 11.09 10.84 1279 1235 1257 1235-1279 Globigerinoides ruber 2.7586 22.02 0.160 -1.810 0.056 0.435 0.189 0.035 6.59 0.34 1.630 0.038 21 11.09 11.79 11.44 1235 1172 1204 1172-1235 Globigerinoides ruber 2.8205 22.27 0.201 -1.774 0.058 0.434 0.189 0.036 6.47 0.40 1.623 0.038 22 11.79 12.32 12.05 1172 1107 1140 1107-1172 Globigerinoides ruber 2.9579 22.80 0.148 -1.742 0.067 0.504 0.254 0.049 5.94 0.27 1.682 0.038 23 12.32 12.96 12.64 1107 1024 1066 1024-1107 Globigerinoides ruber 2.9362 22.72 0.113 -1.857 0.066 0.467 0.218 0.044 5.90 0.38 1.596 0.040 24 12.96 13.46 13.21 1024 954 989 954-1024 Globigerinoides ruber 2.9138 22.63 0.256 -1.682 0.067 0.513 0.263 0.049 5.52 0.40 1.661 0.045 25 13.46 14.20 13.83 954 862 908 862-954 Globigerinoides ruber 2.8524 22.40 0.247 -9999 -9999 -9999 -9999 5.96 0.56 -9999 -9999