noaa-coral-16971 Urvina Bay Radiocarbon and Oxygen Isotope Data for 1939-1954 Druffel, E.R.M.; Griffin, S.M.; Glynn, D.S.; Dunbar, R.B.; Mucciarone, D.A.; Toggweiler, J.R. Urvina Bay Radiocarbon and Oxygen Isotope Data for 1939-1954 2014-07-16 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/16971 Investigator E.R.M. Druffel Investigator S.M. Griffin Investigator D.S. Glynn Investigator R.B. Dunbar Investigator D.A. Mucciarone Investigator J.R. Toggweiler earth science paleoclimate corals and sclerosponges delta 13C,Pavona clavus,null,per mil PDB,null,corals and sclerosponges,raw,isotope ratio mass spectrometry,N,null earth science paleoclimate corals and sclerosponges age,null,null,year Common Era,null,corals and sclerosponges,null,null,N,null earth science paleoclimate corals and sclerosponges delta 18O,Pavona clavus,null,per mil PDB,null,corals and sclerosponges,raw,isotope ratio mass spectrometry,N,null earth science paleoclimate corals and sclerosponges Delta 14C,Pavona clavus,null,per mil NBS oxalic acid,null,corals and sclerosponges,raw,accelerator mass spectrometry,N,null earth science paleoclimate corals and sclerosponges oxygen isotopes earth science paleoclimate corals and sclerosponges carbon isotopes geoscientificInformation 1939 AD 1954 AD 11 cal yr BP -4 cal yr BP Complete -.25 -.25 -91.367 -91.367 Ocean Pacific Ocean Eastern Pacific Ocean Galapagos Islands Urvina Bay>LATITUDE -.25>LONGITUDE -91.367 None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

325 Broadway, E/NE31

Boulder CO 80305-3328 USA online ASCII Druffel, E.R.M., S.M. Griffin, D. Glynn, R.B. Dunbar, D. Mucciarone, and J.R. Toggweiler 2014 Geophysical Research Letters 41 10.1002/2014GL060504

We present seasonal D14C and d18O measurements from a Galapagos coral sequence that grew during the early 20th century. Our results show that both D14C and d18O values are correlated with sea surface temperature in the Niño 3.4 region and are indicators of El Niño/Southern Oscillation. There is a significant inverse correlation between D14C and d18O values when D14C is lagged by ~2 months, indicating that sea surface temperature changes precede upwelling changes at this eastern equatorial location. We find that cold season low D14C values were higher after the Pacific Decadal Oscillation (PDO) changed from a positive to a negative phase. Cold season high d18O values were significantly higher after the PDO shift, as well. These findings suggest that there are two sources of low D14C waters that upwell at the Galapagos, Subantarctic Mode Water and shallow overturning water from the subpolar North Pacific. STUDY NOTES: Seasonal Delta14C and delta 18O measurements of Pavona clavus U-86 sequence, same as that used by Dunbar et al. 1994 (Paleoceanography) for annual delta18O record. Accelerator Mass Spectrometry was used to determine Delta14C values, and light isotope ratio mass spectrometry to determine d18O values.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/coral/east_pacific/druffel2014/druffel2014-d18o.txt Formatted Text File; d18O and d13C Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/coral/east_pacific/druffel2014/druffel2014-14c.txt Formatted Text File; Delta14C Data USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11