noaa-coral-17380 Clipperton Atoll 1874-1994 Sr/Ca and Oxygen Isotope Data Wu, H.C.; Moreau, M.; Linsley, B.K.; Schrag, D.P.; Corrège, T. Clipperton Atoll 1874-1994 Sr/Ca and Oxygen Isotope Data 2014-10-31 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/17380 Investigator H.C. Wu Investigator M. Moreau Investigator B.K. Linsley Investigator D.P. Schrag Investigator T. Corrège earth science paleoclimate corals and sclerosponges strontium/calcium,Porites lobata,null,millimole per mole,null,corals and sclerosponges,interpolated,inductively-coupled plasma 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,Porites lobata,null,per mil VPDB,null,corals and sclerosponges,interpolated,isotope ratio mass spectrometry,N,null earth science paleoclimate corals and sclerosponges oxygen isotopes earth science paleoclimate corals and sclerosponges trace metals geoscientificInformation ENSO 1874 AD 1993 AD 76 cal yr BP -43 cal yr BP Complete 10.3 10.3 -109.22 -109.22 Ocean Pacific Ocean South Pacific Ocean Polynesia French Polynesia Clipperton Atoll>LATITUDE 10.3>LONGITUDE -109.22 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 Wu, H.C., M. Moreau, B.K. Linsley, D.P. Schrag, and T. Corrège 2014 Palaeogeography, Palaeoclimatology, Palaeoecology 412 208-222 10.1016/j.palaeo.2014.07.039

Sub-seasonally resolved and replicated coral Sr/Ca time series at Clipperton Atoll (10°18'N, 109°13'W) in the eastern Pacific are assessed as a sea surface temperature (SST) proxy in this region with small seasonal SST variability. The composite coral Sr/Ca time series is a partially replicated record of three live and one sub- modern colony of Porites lobata extending back to 1874. Large inter-colony coral Sr/Ca offsets equate to relative SST differences of 0.6 to 4.3 °C and limit the ability to reconstruct absolute SST changes. Moreover, the replication method revealed a 12-year section of growth in one colony where mean Sr/Ca was anomalously low (~1 °C higher SST) relative to the other colonies without evidence of diagenesis or other significant skeletal alterations. The presence of this anomalous interval supports the need for multi-coral Sr/Ca replication in specific sites or re- gions. The Clipperton Composite Sr/Ca anomaly record is significantly coherent (r = 0.71–0.76, p b 0.001) with gridded instrumental SSTs but with larger amplitude decadal variance that appears to more accurately represent actual SST variability at Clipperton. The amplitude of the secular warming trend during the last century at Clipperton is 0.3 to 0.6 °C larger (~twice as large) than the trend in the poorly “ground-truthed” instrumental SST records for the region. The interannual and decadal variability in Clipperton coral Sr/Ca demonstrates strong coherence to the Pacific Decadal Oscillation and the El Nino/Southern Oscillation (ENSO) with reduced ENSO variability from 1920 to late 1930s and enhanced variability in the late twentieth century. STUDY NOTES: Monthly data from Porites lobata.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/coral/east_pacific/wu2014/wu2014-6a.txt Formatted Text File; 6A Sr/Ca Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/coral/east_pacific/wu2014/wu2014-f1b.txt Formatted Text File; F1B Sr/Ca and d18O Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/coral/east_pacific/wu2014/wu2014-2b.txt Formatted Text File; 2B Sr/Ca Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/coral/east_pacific/wu2014/wu2014-4b.txt Formatted Text File; 4B Sr/Ca Data USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11