noaa-coral-19702 Western Tropical Pacific - Palau Archipelago, 1945-2008 CE, Porites lutea Coral D14C Data Glynn, D.S.; Druffel, E.R.M.; Griffin, S.M.; Dunbar, R.B.; Osborne, M.C.; Sanchez-Cabeza, J.-A. Western Tropical Pacific - Palau Archipelago, 1945-2008 CE, Porites lutea Coral D14C Data 2016-01-22 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/19702 Investigator D.S. Glynn Investigator E.R.M. Druffel Investigator S.M. Griffin Investigator R.B. Dunbar Investigator M.C. Osborne Investigator J.-A. Sanchez-Cabeza 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 14C,Porites lutea,null,per mil NBS oxalic acid,null,corals and sclerosponges,raw,accelerator mass spectrometry,N,null earth science paleoclimate corals and sclerosponges Delta 14C,Porites lutea,one standard deviation,per mil NBS oxalic acid,null,corals and sclerosponges,raw,accelerator mass spectrometry,N,null earth science paleoclimate corals and sclerosponges carbon isotopes geoscientificInformation 1945 AD 2008 AD 5 cal yr BP -58 cal yr BP Complete 7.2859 7.2859 134.2503 134.2503 Ocean Pacific Ocean Western Pacific Ocean Micronesia Palau Ulong Channel>LATITUDE 7.2859>LONGITUDE 134.2503 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

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Boulder CO 80305-3328 USA online ASCII Glynn, D.S., E.R.M. Druffel, S. Griffin, R. Dunbar, M. Osborne, and J.A. Sanchez-Cabeza 2013 Radiocarbon 55 2-3 1659-1664 10.2458/azu_js_rc.55.16361 https://journals.uair.arizona.edu/index.php/radiocarbon/article/view/16361 Michael C. Osborne, Robert B. Dunbar, David A. Mucciarone, Ellen Druffel, Joan-Albert Sanchez-Cabeza 2014 Coral Reefs 10.1007/s00338-014-1146-1 http://link.springer.com/article/10.1007/s00338-014-1146-1

The West Pacific Warm Pool (WPWP) is a critical region of the global climate system that is closely linked with the El Nino-Southern Oscillation (ENSO). We have generated two monthly resolved coral d18O (d18OCRL) records from a key region of the WPWP, the Republic of Palau (7N, 135E). The isotopic time series span the years 1793-2008 and 1899-2008. During the period of overlap, the two records are well correlated at interannual and annual periods. Multiple lines of evidence demonstrate a strong ENSO signal in Palau d18OCRL. Our records are consistent with previous investigations of twentieth-century tropical Pacific climate variability. We identify a regionally coherent bi-decadal cycle in the WPWP following the termination of the Little Ice Age. The Palau d18OCRL records show long-term trends towards warming/freshening, suggesting a century scale increase in the strength of the hydrologic cycle associated with the WPWP. Our study represents an important addition to the network of tropical paleo-archives. STUDY NOTES: Palau coral radiocarbon data from 1945 to 2008 CE, record of thermonuclear weapons testing in the Marshall Islands. Annual samples were collected from coral slabs UC-2-3 (1945-1982) and UC-3-2 (1982-2008) with annual growth varying from 1 to 1.5 cm. Seasonal samples were taken for the years 1953-1957 from slab UC-2-3. Seasonal samples were drilled every 1 mm. Radiocarbon values corrected for known age to 1950 according to convention (Stuiver and Polach 1977). Site depth is 12 m.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/glynn2013/glynn2013-ann-d14c.txt Formatted Text File; Annual D14C Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/glynn2013/glynn2013-seas-d14c.txt Formatted Text File; Seasonal D14C Data USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11