Dry Tortugas Siderastrea and Montastraea Coral Sr/Ca Data, 1992-2008 DeLong, K.L.; Flannery, J.A.; Maupin, C.R.; Poore, R.Z.; Quinn, T.M. DeLong, K.L. Flannery, J.A. Maupin, C.R. Poore, R.Z. Quinn, T.M. earth science/paleoclimate/corals and sclerosponges (strontium/calcium,Siderastrea siderea,one standard error,millimole per mole,null,corals and sclerosponges,interpolated,inductively-coupled plasma atomic emission spectroscopy,N,null) earth science/paleoclimate/corals and sclerosponges (strontium/calcium,Siderastrea siderea,null,millimole per mole,null,corals and sclerosponges,averaged|interpolated,inductively-coupled plasma atomic emission spectroscopy,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 (strontium/calcium,Orbicella faveolata,one standard error,millimole per mole,null,corals and sclerosponges,interpolated,inductively-coupled plasma atomic emission spectroscopy,N,null) earth science/paleoclimate/corals and sclerosponges (strontium/calcium,Orbicella faveolata,null,millimole per mole,null,corals and sclerosponges,averaged|interpolated,inductively-coupled plasma atomic emission spectroscopy,N,null) earth science/paleoclimate/corals and sclerosponges (number of samples,Orbicella faveolata,null,count,null,corals and sclerosponges,null,null,N,null) earth science/paleoclimate/instrumental (sea surface temperature,null,one standard error,degree Celsius,null,instrumental,null,null,N,in situ data logger) earth science/paleoclimate/instrumental (sea surface temperature,null,null,degree Celsius,null,instrumental,null,null,N,in situ data logger) earth science/paleoclimate/corals and sclerosponges (number of samples,Siderastrea siderea,null,count,null,corals and sclerosponges,null,null,N,null) earth science/paleoclimate/corals and sclerosponges (Pulaski Reef>LATITUDE 24.7>LONGITUDE -82.8) This study examined the variations in the ratio of strontium-to-calcium (Sr/Ca) for two Atlantic corals (Montastraea faveolata and Siderastrea siderea) from the Dry Tortugas National Park (centered on 24.7°N, 82.8°W) in the Gulf of Mexico. Cores from coral colonies in close proximity (10s of meters) and with the same environmental conditions (i.e., depth and water chemistry) were micro-sampled with approximately monthly resolution and the resulting Sr/Ca variations were calibrated with local sea surface temperature (SST) records. Replication tests for coral Sr/Ca variations found high agreement between intra-colony variations and between individual colonies of S. siderea (a single M. faveolata colony was sampled). Regression analysis of monthly variations in coral Sr/Ca and local SST revealed significant correlation on monthly and inter-annual timescales. Verification of the calibration on different timescales found coral Sr/Ca-SST reconstructions in S. siderea were more accurate than those from M. faveolata, especially on inter-annual timescales. Sr/Ca-SST calibration equations for the two species are significantly different (cf., Sr/Ca = -0.042 SST + 10.070, S. siderea; Sr/Ca = -0.027 SST + 9.893, M. faveolata). Mean linear extension for M. faveolata is approximately twice that of S. siderea (4.63, 4.31, and 8.31 mm year-1, A1, F1, and B3, respectively); however, seasonal Sr/Ca variability in M. faveolata is less than S. siderea (0.323, 0.353, and 0.254 mmol mol-1, A1, F1, and B3, respectively). The reduced slope for M. faveolata is attributed to physical sampling issues associated with complex time-skeletal structure of M. faveolata, i.e., a sampling effect, and not a growth effect since the faster growing M. faveolata has the reduced Sr/Ca variability. STUDY NOTES: The data set contains the ratio of strontium-to-calcium (Sr/Ca) for two Atlantic corals (Montastraea faveolata and Siderastrea siderea) from the Dry Tortugas National Park (centered on 24.7°N, 82.8°W) in the Gulf of Mexico. Samples were extracted from cores along the corallite walls with a computer controlled micro-milling system with approximately monthly resolution. Multiple paths were sampled to assess intracolony variability. The coeval paths were averaged together to produce mean Sr/Ca variations. These variations were calibrated with local sea surface temperature (SST) records from NOAA National Data Buoy Center (NDBC; www.ndbc.noaa.gov) DRYF1, PLSF1, and SANF1 using weighted least squares linear regression. The dataset contains averages of the raw coral Sr/Ca data from multiple paths sampled along the cores, with the number of samples and standard error of the mean reported for each month, along with SST data used for calibration. Pulaski Reef, Dry Tortugas: ~24.7°N, 82.8°W, 3m water depth NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : DeLong, K.L. Investigator : Flannery, J.A. Investigator : Maupin, C.R. Investigator : Poore, R.Z. Investigator : Quinn, T.M. 2011-09-14 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/11935 https://www1.ncdc.noaa.gov/pub/data/paleo/coral/atlantic/tortugas2011.xls https://www1.ncdc.noaa.gov/pub/data/paleo/coral/atlantic/tortugas2011.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/atlantic/tortugas2011.xls https://www1.ncdc.noaa.gov/pub/data/paleo/coral/atlantic/tortugas2011.txt English https://www.ncdc.noaa.gov/paleo/study/11935 https://www1.ncdc.noaa.gov/pub/data/paleo/coral/atlantic/tortugas2011.xls https://www1.ncdc.noaa.gov/pub/data/paleo/coral/atlantic/tortugas2011.txt DeLong, K.L., J.A. Flannery, C.R. Maupin, R.Z. Poore, and T.M. Quinn. 2011. A coral Sr/Ca calibration and replication study of two massive corals from the Gulf of Mexico. Palaeogeography, Palaeoclimatology, Palaeoecology, Vol. 307, Issues 1-4, 1 July 2011, pp. 117-128. doi:10.1016/j.palaeo.2011.05.005 START YEAR: 1992 AD * END YEAR: 2008 AD -82.8 24.7 -82.8 24.7