noaa-coral-23850 Little Cayman, Cayman Islands, Coral d18O and Sr/Ca Data from 1887-2011 CE von Reumont, J.; Hetzinger, S.; Garbe-Schönberg, D.; Manfrino, C.; Dullo, W.-C. Little Cayman, Cayman Islands, Coral d18O and Sr/Ca Data from 1887-2011 CE 2018-04-12 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/23850 Investigator J. von Reumont Investigator S. Hetzinger Investigator D. Garbe-Schönberg Investigator C. Manfrino Investigator W.-C. Dullo earth science paleoclimate corals and sclerosponges delta 18O,null,null,dimensionless,null,corals and sclerosponges,detrended,isotope ratio mass spectrometry,N,null earth science paleoclimate corals and sclerosponges strontium/calcium,null,null,dimensionless,null,corals and sclerosponges,detrended,null,N,null earth science paleoclimate instrumental sea surface temperature,null,null,degree Celsius,null,instrumental,null,null,N,augmented HadISST1 SST data centered on 19.5°N and 79.5°W including the sampling site earth science paleoclimate corals and sclerosponges delta 18O,null,null,per mil VPDB,null,corals and sclerosponges,averaged,isotope ratio mass spectrometry,N,averaged monthly values earth science paleoclimate instrumental sea surface temperature,null,null,degree Celsius,null,instrumental,corrected,null,N,augmented HadISST1 SST data centered on 19.5°N and 79.5°W including the sampling site using an ordinary least squares regression relationship between HadISST and SST data from the local Coral Reef Early Warning System (CREWS) station LCIY2 earth science paleoclimate corals and sclerosponges delta 18O,null,null,per mil VPDB,null,corals and sclerosponges,interpolated,isotope ratio mass spectrometry,N,interpolated linearly to monthly time steps earth science paleoclimate corals and sclerosponges strontium/calcium,null,null,millimole per mole,null,corals and sclerosponges,interpolated,null,N,interpolated linearly to monthly time steps earth science paleoclimate climate reconstructions|corals and sclerosponges|instrumental age,null,null,year Common Era,null,climate reconstructions|corals and sclerosponges|instrumental,null,null,N,centered on Jan of the year earth science paleoclimate climate reconstructions|corals and sclerosponges sea surface temperature,delta 18O,null,degree Celsius,null,climate reconstructions|corals and sclerosponges,null,null,N,calibrated using ordinary least squares regression between d18O and HadISST_aug earth science paleoclimate corals and sclerosponges strontium/calcium,null,null,millimole per mole,null,corals and sclerosponges,averaged,null,N,averaged monthly values earth science paleoclimate climate reconstructions|corals and sclerosponges sea surface temperature,strontium/calcium,null,degree Celsius,null,climate reconstructions|corals and sclerosponges,null,null,N,calibrated using ordinary least squares regression between Sr/Ca and HadISST_aug earth science paleoclimate climate reconstructions|corals and sclerosponges|instrumental age,null,null,year Common Era,null,climate reconstructions|corals and sclerosponges|instrumental,null,null,N,centered on midpoint of each month of the year earth science paleoclimate corals and sclerosponges oxygen isotopes earth science paleoclimate corals and sclerosponges trace metals geoscientificInformation Sea Surface Temperature Reconstruction 1887 AD 2011 AD 63 cal yr BP -61 cal yr BP Complete 19.70038 19.70038 -80.05647 -80.05647 -9 -9 Ocean Atlantic Ocean North Atlantic Ocean Caribbean Sea Cayman Islands LC3, Little Cayman>LATITUDE 19.70038>LONGITUDE -80.05647 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 von Reumont, J., S. Hetzinger, D. Garbe-Schönberg, C. Manfrino, and W.-C. Dullo 2018 Paleoceanography and Paleoclimatology 10.1002/2018PA003321 von Reumont, J., S. Hetzinger, D. Garbe-Schönberg, C. Manfrino, and W.-C. Dullo 2016 Geochemistry, Geophysics, Geosystems 10.1002/2015GC006194

Atlantic Warm Pool (AWP) climate variability is subject tomultiple influences of remote and local forcing. However, shortage of observational data before the midtwentieth century and of long-term sea surface temperature (SST) and climate records has hampered the detection and investigation of decadal- and longer-scale variability. We present new seasonally resolved 125-year records of coral d18O and Sr/Ca variations in the Central Caribbean Sea (Little Cayman, Cayman Islands; Diploria strigosa). Both geochemical proxies show decreasing long-term trends, indicating long-term warming. Sr/Ca indicates much stronger regional warming than large-scale grid-SST data, while d18O tracks large-scale SST changes in the Atlantic Warm Pool. Seawater d18O variations are reconstructed, indicating a drying trend over the past century. High spatial correlation between coral d18O and SST in the region of the Loop Current and Gulf Stream system suggests that Little Cayman is a sensitive location for detecting past large-scale temperature variability beyond the Central Caribbean region. More specifically, our d18O data track changes in North Atlantic Oscillation variability on decadal and multidecadal time scales providing insights into the temporal and spatial nonstationarity of the North Atlantic Oscillation. A combination of our d18O record with two coral records from different Caribbean sites reveals high spatial correspondence between coral d18O and SST variability in the North Atlantic subtropical gyre, where few instrumental measurements and proxies are available prior to the twentieth century. Our results clearly demonstrate the potential of combining proxy data to provide information from sparsely sampled areas, helping to reduce uncertainty in model-based projections. STUDY NOTES: Chronologies based on seasonal cycles in trace element ratios; Analytical uncertainty: d18O D. strigosa = 0.06 per mil; Sr/Ca D. strigosa = 0.01 mmol/mol Provided Keywords: corals, Sr/Ca, oxygen isotopes, Cayman Islands, Caribbean

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/coral/caribbean/von_reumont2018/von_reumont2018-month.txt NOAA Template File; LC3 Monthly d18O and Sr/Ca Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/coral/caribbean/von_reumont2018/von_reumont2018-ann.txt NOAA Template File; LC3 Annual d18O and Sr/Ca Data USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11