noaa-ocean-23730 Line Islands Mg/Ca and sea surface temperature reconstruction in the early and mid-Holocene White, S.M.; Ravelo, A.C.; Polissar, P.J. Line Islands Mg/Ca and sea surface temperature reconstruction in the early and mid-Holocene 2017-12-30 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/23730 Investigator S.M. White Investigator A.C. Ravelo Investigator P.J. Polissar earth science paleoclimate paleocean trace metals in carbonates earth science paleoclimate paleocean biomarkers earth science paleoclimate paleocean reconstruction geoscientificInformation Sea Surface Temperature Reconstruction 15000 cal yr BP 0 cal yr BP Complete -13.08 14.82 -156 172.35 -3049 -3049 Ocean Pacific Ocean Central Pacific Ocean MGL1208-14MC, 12GC>LATITUDE 0>LONGITUDE -156 Ocean Pacific Ocean Western Pacific Ocean Western Equatorial Pacific>LATITUDE >LONGITUDE Ocean Pacific Ocean Eastern Pacific Ocean Eastern Equatorial Pacific at 90W>LATITUDE >LONGITUDE Ocean Pacific Ocean Eastern Pacific Ocean Eastern Equatorial Pacific 8x6 box at 87W>LATITUDE >LONGITUDE 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 White, Sarah M., Ravelo, A. Christina, and Polissar, Pratigya J. 2018 Geophysical Research Letters 44 316-326 10.1002/2017GL075433

El Niño-Southern Oscillation (ENSO) dominates interannual climate variability, thus understanding its response to climate forcing is critical. ENSO's sensitivity to changing insolation is poorly understood, due to contrasting interpretations of Holocene proxy records. Some records show dampened ENSO during the early to mid-Holocene, consistent with insolation forcing of ENSO amplitude, but other records emphasize decadal-centennial fluctuations in ENSO strength, with no clear trend. To clarify Holocene ENSO behavior, we collected proxy data spanning the last ~12 kyr, and find relatively low El Niño amplitude during the early to mid-Holocene. Our data, together with published work, indicate both a long-term trend in ENSO strength due to June insolation forcing and high-amplitude decadal-centennial fluctuations; both behaviors are shown in models. The best-supported mechanism for insolation-driven dampening of ENSO is weakening of the upwelling feedback by insolation-forced warming/deepening of thermocline source waters. Elucidating the thermocline's role will help predict future ENSO change. STUDY NOTES: Trace metal data are from individual foraminifera. Provided Keywords: ENSO, paleoclimate, foraminifera, tropical Pacific, insolation UPDATE: Eastern and Western Equatorial Pacific collections of SST Data added to study on 14-MAR-2019.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2017/white2018-EEP-SSTalke-RecordsUsed_Metadata.txt NOAA Template File - Synthesis Metadata; Records Used in Eastern Equatorial Pacific Mg/Ca SST Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2017/white2018-WEP-SST-RecordsUsed_Metadata.txt NOAA Template File - Synthesis Metadata; Records Used in Western Equatorial Pacific SST Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2017/white2018-EEP-SSTmgca-synthesis.txt NOAA Template File; Eastern Equatorial Pacific Alkenone SST Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2017/white2018-EEP-SSTmgca-RecordsUsed_Metadata.txt NOAA Template File - Synthesis Metadata; Records Used in Eastern Equatorial Pacific Alkenone SST Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2017/white2018-WEP-SST-synthesis.txt NOAA Template File; Western Equatorial Pacific SST Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2017/white2017.txt NOAA Template File; MGL1208-14MC, 12GC Mg/Ca and SST Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2017/white2018-EEP-SSTalke-synthesis.txt NOAA Template File; Eastern Equatorial Pacific Mg/Ca SST Data USA/NOAA DIF Version 9.8.4 2019-03-14 2019-03-14