{"xmlId":"75532","NOAAStudyId":"33872","studyName":"2017 Florida Bay Sr/Ca and d18O Data during Hurricane Irma","doi":"https://doi.org/10.25921/nj4r-mv47","uuid":"6b9f7208-0b87-4640-984e-24da482e2713","dataPublisher":"NOAA","contactInfo":{"type":"CONTACT INFORMATION","shortName":"DOC/NOAA/NESDIS/NCEI","longName":"National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce ","address":"325 Broadway, E/NE31","city":"Boulder","state":"CO","postalCode":"80305-3328","country":"USA","dataCenterUrl":"https://www.ncei.noaa.gov/products/paleoclimatology","email":"paleo@noaa.gov","phone":"828-271-4800","fax":null,"constraints":"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."},"dataType":"CORALS AND SCLEROSPONGES","investigators":"Kilbourne, K.H.; Schijf, J.; Hughes, H.P.; Khare, A.","investigatorDetails":[{"firstName":"K. Halimeda","lastName":"Kilbourne","initials":"K.H.","orcId":"0000-0001-7864-8438"},{"firstName":"Johan","lastName":"Schijf","initials":"J.","orcId":"0000-0001-9266-6982"},{"firstName":"Hunter","lastName":"Hughes","initials":"H.P.","orcId":"0000-0003-1574-4726"},{"firstName":"Agraj","lastName":"Khare","initials":"A.","orcId":null}],"version":"1.0","funding":[{"fundingAgency":"US National Science Foundation","fundingGrant":"OCE1459636"}],"studyNotes":"Seawater Sr/Ca and oxygen isotopes  to complement coral-based paleoclimate efforts. Seawater samples are collected continuously at depth by an osmotically-driven pump, resulting in a timeseries.  This is a subset of a larger datset spanning 2016-2020 at multiple sites in the Florida Keys. The larger dataset will be archived at a later date, when quality control has been completed on the full dataset.\r\n       Provided Keywords: seawater Sr/Ca, oxygen isotopes, environmental data, coral paleotemperature","onlineResourceLink":"https://www.ncei.noaa.gov/access/paleo-search/study/33872","difMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-coral-33872.xml","isoMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/iso/xml/noaa-coral-33872.xml","originalSource":null,"dataTypeInformation":"https://www.ncei.noaa.gov/products/paleoclimatology/coral-sclerosponge","studyCode":null,"scienceKeywords":null,"reconstruction":"N","contributionDate":"2021-08-11","entryId":"noaa-coral-33872","earliestYearBP":-67,"mostRecentYearBP":-67,"earliestYearCE":2017,"mostRecentYearCE":2017,"publication":[{"author":{"name":"Khare, Agraj, Hunter P. Hughes, K. Halimeda Kilbourne, and Johan Schijf"},"pubYear":2021,"title":"An ICP-AES method for routine high-precision measurement of seawater Sr/Ca ratios to validate coral paleothermometry calibrations","journal":"Limnology and Oceanography: Methods","volume":"19","edition":null,"issue":"6","pages":"416-430","reportNumber":null,"citation":"Khare, Agraj, Hunter P. Hughes, K. Halimeda Kilbourne, and Johan Schijf. 2021. An ICP-AES method for routine high-precision measurement of seawater Sr/Ca ratios to validate coral paleothermometry calibrations. Limnology and Oceanography: Methods, 19(6), 416-430. doi: 10.1002/lom3.10434","type":"publication","identifier":{"type":"doi","id":"10.1002/lom3.10434","url":"http://dx.doi.org/10.1002/lom3.10434"},"abstract":"A new ICP-AES method is presented for rapid and routine analysis of Sr/Ca molar ratios in seawater, with a long-term precision of <0.2%. It is an adaptation of a method widely employed for the analysis of coral aragonite Sr/Ca ratios in marine paleothermometry studies, which are based on the assumption that the seawater Sr/Ca ratio is constant in space and time. While prior studies have shown variations of up to 1% with depth, smaller variations at the ocean surface are generally accounted for via empirical, species-specific calibrations of coral Sr/Ca vs. temperature. We found Sr/Ca variations in some coastal waters to be even larger, with distinct periodicity, complicating this approach. Whereas the high precision necessary for measurements of seawater Sr/Ca has previously relied on advanced mass spectrometry, long analysis times, and expensive isotopic spikes, our method uses more accessible instrumentation and is both time- and cost-saving. The intricate composition of seawater, relative to coral aragonite solutions, requires an intensity ratio calibration technique combined with rigorous normalization to a suitable seawater standard. Key aspects of our method are discussed, including choice of wavelengths, instrumental parameters, accuracy, precision, and matrix effects. Special attention is given to the need for a certified seawater Sr/Ca reference standard, which does not presently exist. Analytical validation is provided by concurrent sharp gradients in Sr/Ca and d18O, coinciding with the Florida landfall of hurricane Irma, as recorded at near-daily resolution in a continuous seawater sample collected with an osmotic pump.","pubRank":"1"}],"site":[{"NOAASiteId":"58955","siteName":"Florida Bay Site Osmo1","siteCode":null,"mappable":"Y","locationName":"Ocean>Atlantic Ocean>North Atlantic Ocean>Caribbean Sea","geo":{"geoType":"Feature","geometry":{"type":"POINT","coordinates":["24.9621","-80.801467"]},"properties":{"southernmostLatitude":"24.9621","northernmostLatitude":"24.9621","westernmostLongitude":"-80.801467","easternmostLongitude":"-80.801467","minElevationMeters":"-6","maxElevationMeters":"-6"}},"paleoData":[{"dataTableName":"Osmo1 18W HighRes Irma Kilbourne2021","NOAADataTableId":"46662","earliestYear":2017,"mostRecentYear":2017,"timeUnit":"CE","earliestYearBP":-67,"mostRecentYearBP":-67,"earliestYearCE":2017,"mostRecentYearCE":2017,"coreLengthMeters":108,"dataTableNotes":"samples are from an osmosampler pump that continuously takes seawater samples into a long teflon tube","species":[],"dataFile":[{"fileUrl":"https://www.ncei.noaa.gov/pub/data/paleo/coral/caribbean/kilbourne2021/kilbourne2021-osmo1.txt","urlDescription":"NOAA Template File","linkText":"Osmo1 High Resolution d18O and Sr/Ca Data","variables":[{"cvDataType":"INSTRUMENTAL","cvWhat":"sampling metadata>sample identification","cvMaterial":null,"cvError":null,"cvUnit":null,"cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Character","cvShortName":"SampleID"},{"cvDataType":"INSTRUMENTAL","cvWhat":"chemical composition>element or compound ratio>strontium/calcium","cvMaterial":"hydrologic material>sea water","cvError":"standard error>one standard error","cvUnit":"concentration unit>mole fraction unit>millimole per mole","cvSeasonality":null,"cvDetail":null,"cvMethod":"laboratory method>spectroscopy>electronic spectroscopy>atomic spectroscopy>inductively-coupled plasma atomic emission spectroscopy","cvAdditionalInfo":"standard error of 5 replicate measurements on each sample","cvFormat":"Numeric","cvShortName":"Sr/Ca_err"},{"cvDataType":"INSTRUMENTAL","cvWhat":"chemical composition>element or compound ratio>strontium/calcium","cvMaterial":"hydrologic material>sea water","cvError":null,"cvUnit":"concentration unit>mole fraction unit>millimole per mole","cvSeasonality":null,"cvDetail":"anomalized","cvMethod":"laboratory method>spectroscopy>electronic spectroscopy>atomic spectroscopy>inductively-coupled plasma atomic emission spectroscopy","cvAdditionalInfo":"reference is the entire dataset mean","cvFormat":"Numeric","cvShortName":"Sr/Ca_Anom"},{"cvDataType":"INSTRUMENTAL","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O","cvMaterial":"hydrologic material>sea water","cvError":"standard deviation>one standard deviation","cvUnit":"concentration unit>parts per notation unit>parts per thousand>per mil>per mil VSMOW","cvSeasonality":null,"cvDetail":null,"cvMethod":"laboratory method>spectroscopy>mass spectrometry>isotope ratio mass spectrometry","cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"d18O_err"},{"cvDataType":"INSTRUMENTAL","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O","cvMaterial":"hydrologic material>sea water","cvError":null,"cvUnit":"concentration unit>parts per notation unit>parts per thousand>per mil>per mil VSMOW","cvSeasonality":null,"cvDetail":null,"cvMethod":"laboratory method>spectroscopy>mass spectrometry>isotope ratio mass spectrometry","cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"d18Osw"},{"cvDataType":"INSTRUMENTAL","cvWhat":"age variable>age","cvMaterial":null,"cvError":null,"cvUnit":"time unit>age unit>year Common Era","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"tie point at 9/10/2017 with average pumping rates calculated before and after; 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