noaa-coral-22230 eng; USA utf8 dataset NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact NOAA World Data Service for Paleoclimatology Data Center Contact 828-271-4800 303-497-6513 325 Broadway, E/NE31 Boulder CO 80305-3328 USA paleo@noaa.gov pointOfContact 2025-08-28 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) NOAA/WDS Paleoclimatology - Monterey Bay Bamboo Coral phenylalanine d15N Data from 1977-2004 CE 2017-06-06 publication doi:10.25921/7v2t-gr53 noaa-coral-22230 NCEI DSI 1200_02 NCEI DSI 1200_01 Broek, T.A.B. originator Broek, T.A.B. author Walker, B.D. originator Walker, B.D. author Andreasen, D.H. originator Andreasen, D.H. author McCarthy, M.D. originator McCarthy, M.D. author NOAA National Centers for Environmental Information publisher tableDigital This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Coral. The data include parameters of corals and sclerosponges with a geographic location of North Pacific Ocean. The time period coverage is from -27 to -54 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data. Records of past climate and ocean environment derived from stable isotope, trace metal, and other measurements made on corals and sclerosponges. Parameter keywords describe what was measured in this dataset. Additional summary information can be found in the abstracts of papers listed in the dataset citations. completed NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact NOAA World Data Service for Paleoclimatology Data Center Contact 828-271-4800 303-497-6513 325 Broadway, E/NE31 Boulder CO 80305-3328 USA paleo@noaa.gov pointOfContact https://www.ncei.noaa.gov/pub/data/paleo/webimages/pc-default-coral.png Paleoclimatology - Coral and Sclerosponge PNG Earth Science > Climate Indicators > Paleoclimate Indicators > Biological Records > Coral Deposits Earth Science > Climate Indicators > Paleoclimate Indicators > Ocean/Lake Records > Coral Deposits Earth Science > Paleoclimate > Ocean/Lake Records > Coral Deposits theme Global Change Master Directory (GCMD) Science Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian earth science > paleoclimate > corals and sclerosponges earth science > paleoclimate > corals and sclerosponges earth science > paleoclimate > corals and sclerosponges earth science > paleoclimate > corals and sclerosponges earth science > paleoclimate > corals and sclerosponges earth science > paleoclimate > corals and sclerosponges earth science > paleoclimate > corals and sclerosponges earth science > paleoclimate > corals and sclerosponges earth science > paleoclimate > corals and sclerosponges > chemistry theme Global Change Master Directory (GCMD) Science Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian What: delta 15N; Material: Isidella sp.|phenylalanine What: delta 15N; Material: Isidella sp.|phenylalanine What: sample identification; Material: null What: depth at sample end; Material: null What: age; Material: null What: delta 15N; Material: Isidella sp. What: depth at sample start; Material: null What: depth; Material: null theme Paleoenvironmental Standard Terms (PaST) Thesaurus NOAA National Centers for Environmental Information https://www.ncei.noaa.gov/products/paleoclimatology/paleoenvironmental-standard-terms-thesaurus PaST Thesaurus information publisher Ocean > Pacific Ocean > North Pacific Ocean > T1104 A7 Monterey Canyon > LATITUDE 36.74423 > LONGITUDE -122.037215 place DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian otherRestrictions Cite as: Broek, T.A.B.; Walker, B.D.; Andreasen, D.H.; McCarthy, M.D. (2017-06-06): NOAA/WDS Paleoclimatology - Monterey Bay Bamboo Coral phenylalanine d15N Data from 1977-2004 CE. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/7v2t-gr53. Accessed [date]. otherRestrictions Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives. otherRestrictions Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose otherRestrictions None otherRestrictions 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. High-precision measurement of phenylalanine d15N values for environmental samples: A new approach coupling high-pressure liquid chromatography purification and elemental analyzerisotope ratio mass spectrometry 2013 publication Broek, T.A.B., B.D. Walker, D.H. Andreasen, and M.D. McCarthy author Rapid Communications in Mass Spectrometry publisher https://doi.org/10.1002/rcm.6695 HTTPS Web Browser Associated Reference published 2013 Broek, T.A.B., B.D. Walker, D.H. Andreasen, and M.D. McCarthy, 2013: High-precision measurement of phenylalanine d15N values for environmental samples: A new approach coupling high-pressure liquid chromatography purification and elemental analyzerisotope ratio mass spectrometry. Rapid Communications in Mass Spectrometry, 27, 2327-2337, 10.1002/rcm.6695 information crossReference sciencePaper eng; USA geoscientificInformation Date Range: 1977 CE to 2004 CE; Date Range: -27 cal yr BP to -54 cal yr BP; -122.037215 -122.037215 36.74423 36.74423 Study Coordinates 36.74423 -122.037215 1977 2004 STUDY NOTES: Measurement precision- bulk d15N: <0.1 per mil AIR; d15N_Phe (GC-C-IRMS): 0.6 per mil AIR; d15N_Phe (HPLC-EA-IRMS): < 0.3 per mil AIR ABSTRACT SUPPLIED BY ORIGINATOR: RATIONALE: Compound-specific isotope analysis of individual amino acids (CSI-AA) is a powerful new tool fortracing nitrogen (N) source and transformation in biogeochemical cycles. Specifically, the d15N value of phenylalanine (d15NPhe) represents an increasingly used proxy for source d15N signatures, with particular promise for paleoceanographic applications. However, current derivatization/gas chromatography methods require expensive and relatively uncommon instrumentation, and have relatively low precision, making many potential applications impractical. METHODS: A new offline approach has been developed for high-precision d15N measurements of amino acids (d15NAA), optimized for d15NPhe values. Amino acids (AAs) are first purified via high-pressure liquid chromatography (HPLC), using a mixed-phase column and automated fraction collection. The d15N values are determined via offline elemental analyzer-isotope ratio mass spectrometry (EA-IRMS). RESULTS: The combinedHPLC/EA-IRMSmethod separated most proteinAAs with sufficient resolution to obtain accurate d15N values, despite significant intra-peak isotopic fractionation. For d15NPhe values, the precision was ±0.16‰ for standards, 4Å~ better than gas chromatography/combustion/isotope ratio mass spectrometry (GC/C/IRMS; ±0.64‰). We also compared a d15NPhe paleo-record from a deep-sea bamboo coral from Monterey Bay, CA, USA, using our method versus GC/C/IRMS. The two methods produced equivalent d15NPhe values within error; however, the d15NPhe values from HPLC/EA-IRMS had approximately twice the precision of GC/C/IRMS (average stdev of 0.27‰±0.14‰ vs 0.60‰±0.20‰, respectively). CONCLUSIONS: These results demonstrate that offline HPLC represents a viable alternative to traditional GC/C/IMRS for d15NAA measurement. HPLC/EA-IRMS is more precise and widely available, and therefore useful in applications requiring increased precision for data interpretation (e.g. d15N paleoproxies). 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Native Format(s) https://doi.org/10.25921/7v2t-gr53 HTTPS Landing Page Metadata Landing Page NCEI landing page with general information and links to access the data. information https://www.ncei.noaa.gov/access/paleo-search/study/22230 HTTPS Web Browser NOAA Study Page Study page with data access information. search https://www.ncei.noaa.gov/products/paleoclimatology/coral-sclerosponge HTTPS Information NCEI Coral Page General information for this data type. information https://www.ncei.noaa.gov/pub/data/paleo/coral/east_pacific/broek2013/broek2013-noaa.txt HTTPS Download /coral/east_pacific/broek2013/broek2013-noaa.txt Coral download asNeeded This ISO metadata record was translated from DIF metadata using dif-9x-to-iso-19115-2.xsl Version: 2022-06-21