noaa-coral-24477 St. Marie, Madagascar Coral Sr/Ca, Density, Extension and Calcification Data from 1963-2006 CE Grove, C.A.; Zinke, J. St. Marie, Madagascar Coral Sr/Ca, Density, Extension and Calcification Data from 1963-2006 CE 2018-06-25 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/24477 Investigator C.A. Grove Investigator J. Zinke 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 density,Porites sp.,null,gram per cubic centimeter,null,corals and sclerosponges,null,null,N,null earth science paleoclimate corals and sclerosponges strontium/calcium,Porites sp.,null,millimole per mole,null,corals and sclerosponges,interpolated,inductively-coupled plasma atomic emission spectroscopy,N,from core STM4; interpolated linearly to monthly time steps earth science paleoclimate corals and sclerosponges strontium/calcium,Porites sp.,null,millimole per mole,null,corals and sclerosponges,interpolated,inductively-coupled plasma atomic emission spectroscopy,N,from core STM2; interpolated linearly to monthly time steps earth science paleoclimate corals and sclerosponges extension rate,Porites sp.,null,centimeter per year,null,corals and sclerosponges,null,null,N,null earth science paleoclimate corals and sclerosponges strontium/calcium,Porites sp.,null,millimole per mole,null,corals and sclerosponges,interpolated,inductively-coupled plasma atomic emission spectroscopy,N,composite of STM4 and STM2; interpolated linearly to monthly time steps earth science paleoclimate corals and sclerosponges calcification rate,Porites sp.,null,gram per square centimeter per year,null,corals and sclerosponges,null,null,N,null earth science paleoclimate corals and sclerosponges physical properties earth science paleoclimate corals and sclerosponges trace metals geoscientificInformation 1963 AD 2006 AD -13 cal yr BP -56 cal yr BP Complete -17.092 -17.092 49.86 49.86 -4 -4 Ocean Indian Ocean Madagascar St. Marie>LATITUDE -17.092>LONGITUDE 49.86 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 Grove, C.A., Kasper, S., Zinke, J., Pfeiffer, M., Garbe-Schönberg, D. and Brummer, G.-J.A. 2013 Geochemistry, Geophysics, Geosystems 14 1277-1293 10.1002/ggge.20095

Massive corals offer continuous records of climate locked within their skeleton, with the most commonly applied paleo-thermometer being Sr/Ca. Recently, however, problems with Sr/Ca thermometry indicate that the intrinsic variance of single-core Sr/Ca time series differs between cores. Here, we compare the Sr/Ca records and growth parameters of two Porites lutea colonies sampled from the same reef zone, 0.72 km apart, with two gridded SST datasets, ERSST and HadISST, off NE Madagascar. Specifically, we address seasonal and interannual variability as well as trend differences between records over the same 43 year period. The two gridded SST datasets showed strong seasonality and weak positive ENSO anomalies on a slow 43 year warming trend at significantly different rates. Both the coral Sr/Ca records showed the same clear seasonality and similar amplitudes in SST. However, on interannual timescales, they displayed diverging 43 year Sr/Ca trends and opposite responses to weak ENSO anomalies. Moreover, their growth response also differed as one coral showed increasing extension/calcification rates and Sr/Ca ratios (cooling) over the 43 years, while the other coral showed decreasing extension/calcification rates and Sr/Ca ratios (warming). Further, during positive ENSO events, the calcification rates of the two corals were negatively correlated, while skeletal density anomalies were opposite. Possible explanations to why these corals are so different may be related to the corals growth response to SST changes. The growth response of individual corals to increasing SST seems to be opposite, which in turn are likely related to biological factors. Consequently, coral growth responses explain much of the inter-colony Sr/Ca variability. STUDY NOTES: Chronology based on seasonal cycles in trace elements (Sr/Ca) Provided Keywords: corals, Sr/Ca, SST, Madagascar, Indian Ocean

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/grove2013/grove2013-stm4.txt NOAA Template File; STM4 Density, Extension and Calcification Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/grove2013/grove2013-stm2.txt NOAA Template File; STM2 Density, Extension and Calcification Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/grove2013/grove2013-srca.txt NOAA Template File; STM2 and STM4 Sr/Ca Data USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11