Benway et al. 2006 Eastern Pacific Warm Pool ODP1242 Paleosalinity Data Benway, H.M.; Mix, A.C.; Haley, B.A.; Klinkhammer, G.P. Benway, H.M. Mix, A.C. Haley, B.A. Klinkhammer, G.P. earth science/paleoclimate/climate reconstructions|paleoceanography (sea surface temperature,glycerol dialkyl glycerol tetraether index,null,degree Celsius,null,climate reconstructions|paleoceanography,null,null,N,core top sediment; Globigerinoides ruber; Anand et al. (2003) calibration) earth science/paleoclimate/climate reconstructions|paleoceanography (delta 18O,delta 18O|magnesium/calcium|sea water,null,per mil VSMOW,null,climate reconstructions|paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (magnesium/calcium,Globigerinoides ruber,null,millimole per mole,null,paleoceanography,null,null,N,core top sediment) earth science/paleoclimate/paleoceanography (delta 18O,Neogloboquadrina dutertrei,null,per mil VPDB,null,paleoceanography,null,null,N,core top sediment) earth science/paleoclimate/paleoceanography (age,null,null,calendar kiloyear before present,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (magnesium/calcium,Globigerinoides ruber,null,dimensionless,null,paleoceanography,null,null,N,null) earth science/paleoclimate/climate reconstructions|paleoceanography (delta 18O,delta 18O|magnesium/calcium|sea water,null,per mil VSMOW,null,climate reconstructions|paleoceanography,null,null,N,Globigerinoides ruber white) earth science/paleoclimate/climate reconstructions|paleoceanography (sea surface temperature,magnesium/calcium,null,degree Celsius,null,climate reconstructions|paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (latitude,null,null,degree,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (delta 18O,Neogloboquadrina dutertrei,null,per mil VPDB,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (age,null,null,calendar year before present,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (magnesium/calcium,Globigerinoides ruber,null,millimole per mole,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (delta 18O,Globigerinoides ruber,null,per mil VPDB,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,Globigerinoides ruber; Anand et al. (2003) calibration) earth science/paleoclimate/paleoceanography (longitude,null,null,degree,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (delta 18O,Globigerinoides ruber,null,per mil VPDB,null,paleoceanography,null,null,N,core top sediment) earth science/paleoclimate/paleoceanography (depth,null,null,centimeter,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean (ME0005A-43JC>LATITUDE 7.85583>LONGITUDE -83.60833) (ODP1242>LATITUDE 7.85583>LONGITUDE -83.60694) Multiproxy geologic records of δ18O and Mg/Ca in fossil foraminifera from sediments under the Eastern Pacific Warm Pool (EPWP) region west of Central America document variations in upper ocean temperature, pycnocline strength, and salinity (i.e., net precipitation) over the past 30 kyr. Although evident in the paleotemperature record, there is no glacial-interglacial difference in paleosalinity, suggesting that tropical hydrologic changes do not respond passively to high-latitude ice sheets and oceans. Millennial variations in paleosalinity with amplitudes as high as ~4 practical salinity units occur with a dominant period of ~3-5 ky during the glacial/deglacial interval and ~1.0-1.5 ky during the Holocene. The amplitude of the EPWP paleosalinity changes greatly exceeds that of published Caribbean and western tropical Pacific paleosalinity records. EPWP paleosalinity changes correspond to millennial-scale climate changes in the surface and deep Atlantic and the high northern latitudes, with generally higher (lower) paleosalinity during cold (warm) events. In addition to Intertropical Convergence Zone (ITCZ) dynamics, which play an important role in tropical hydrologic variability, changes in Atlantic-Pacific moisture transport, which is closely linked to ITCZ dynamics, may also contribute to hydrologic variations in the EPWP. Calculations of interbasin salinity average and interbasin salinity contrast between the EPWP and the Caribbean help differentiate long-term changes in mean ITCZ position and Atlantic-Pacific moisture transport, respectively. STUDY NOTES: Mg/Ca SST = ln (Mg/Ca/0.38)/0.09 [Anand et al., 2003]. d18Oseawater calculated from paleotemperature equation of Thunell et al. (1999) sediment trap G. ruber, which is the same as Bemis et al. (1998) cultured O. universa high light. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Benway, H.M. Investigator : Mix, A.C. Investigator : Haley, B.A. Investigator : Klinkhammer, G.P. 2006-08-01 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/5943 https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp1242-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/benway2006/benway2006.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/m5a-43jc-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp1242-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/benway2006/benway2006.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/m5a-43jc-tab.txt English https://www.ncdc.noaa.gov/paleo/study/5943 https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/odp1242-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/benway2006/benway2006.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/m5a-43jc-tab.txt Benway, H.M., A.C. Mix, B.A. Haley, and G.P. Klinkhammer. 2006. Eastern Pacific Warm Pool paleosalinity and climate variability: 0–30 kyr. Paleoceanography, 21, PA3008. 10.1029/2005PA001208. START YEAR: 23491 cal yr BP * END YEAR: 492 cal yr BP -83.60833 7.85583 -83.60694 7.85583