gov.noaa.nodc:0209090 eng utf8 dataset NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NOAA Contact Information Information for contacts at NCEI. information custodian 2025-12-11T13:06:54Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Water temperature, salinity, methane, methane stable isotopes, and others chemical parameters collected by CTD and Niskin bottles from research vessel Hugh R. Sharp in Mid-Atlantic Bight from 2017-08-25 to 2017-09-05 (NCEI Accession 0209090) 2020-02-20 publication 2020-03-30 revision 2020-02-18 creation International DOI Foundation (IDF) 10.25921/pr39-4f13 NOAA National Centers for Environmental Information gov.noaa.nodc:0209090 NCEI Archive Management System 0209090 NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information publisher Mihai Leonte University of Rochester mleonte31@gmail.com resourceProvider University of Rochester resourceProvider Mihai Leonte University of Rochester mleonte31@gmail.com pointOfContact Leonte, Mihai University of Rochester author Ruppel, Carolyn D. U.S. Geological Survey https://www.usgs.gov/ HTTPS United States Geological Survey (USGS) website Institution web page information author Ruiz-Angulo, Angel author Kessler, John D. author University of Rochester contributor tableDigital This dataset includes measurements of water temperature, salinity, methane concentration, methane stable isotopes, and others chemical parameters collected by CTD and Niskin bottles from research vessel Hugh R. Sharp in Mid-Atlantic Bight from 2017-08-25 to 2017-09-05. Measurements of methane concentration and stable isotopes were then used to calculate the fraction oxidized, or the fraction of methane that has been microbially oxidized since entering the water column, either from seafloor gas seeps or in-situ methane production. Data are in CSV format. These data were collected to determine the fate of methane along the mid-Atlantic Bight and which methane sources to the water column contributed to surface methane concentrations completed historicalArchive NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information pointOfContact asNeeded NCEI Accession 0209090 was revised and a new version of the archival package was published. Updates to existing archival packages may provide additional files or replace obsolete files. The latest version contains the most complete and up-to-date representation of this archival information package. All of the files received prior to this update are available in the preceding version of this accession. Please see journal.txt in the /about directory for additional details on changes made. https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0209090 Preview graphic PNG 0209090 NCEI ACCESSION NUMBER 2020-02-10 publication DEPTH - OBSERVATION LATITUDE LONGITUDE Methane (CH4) SALINITY WATER TEMPERATURE theme NODC DATA TYPES THESAURUS CTD GPS Niskin bottle instrument NODC INSTRUMENT TYPES THESAURUS chemical in situ laboratory analyses model output physical theme NODC OBSERVATION TYPES THESAURUS R/V Hugh R. Sharp platform NODC PLATFORM NAMES THESAURUS University of Rochester dataCentre NODC COLLECTING INSTITUTION NAMES THESAURUS University of Rochester dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS Mid-Atlantic Bight place NODC SEA AREA NAMES THESAURUS oceanography theme WMO_CategoryCode 2012-09-15 publication EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY theme Global Change Master Directory (GCMD) Science Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. 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 CTD > Conductivity, Temperature, Depth GPS RECEIVERS > GPS RECEIVERS NISKIN BOTTLES instrument Global Change Master Directory (GCMD) Instrument Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. 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 Hugh R. Sharp (call sign: WDC6908, ICES code: 33H5, 2006-) platform ICES/SeaDataNet Ship Codes OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN place Global Change Master Directory (GCMD) Location Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. 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 0MJEMC Send2NCEI Submission Package ID accessLevel: public otherRestrictions Cite as: Leonte, Mihai; Ruppel, Carolyn D.; Ruiz-Angulo, Angel; Kessler, John D. (2020). Water temperature, salinity, methane, methane stable isotopes, and others chemical parameters collected by CTD and Niskin bottles from research vessel Hugh R. Sharp in Mid-Atlantic Bight from 2017-08-25 to 2017-09-05 (NCEI Accession 0209090). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/pr39-4f13. Accessed [date]. 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. eng; USA utf8 environment oceans -74.8405 -74.15517 35.5238 37.53883 2017-08-25 2017-09-05 In this accession, NCEI has archived multiple versions of these data. The latest (and best) version of these data has the largest version number. NOAA National Centers for Environmental Information +1-301-713-3277 ncei.info@noaa.gov pointOfContact In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media. Contact NCEI for other distribution options and instructions. Originator data format 0.312 https://doi.org/10.25921/pr39-4f13 HTTPS Web browser NCEI Dataset Landing Page Navigate directly to the URL for a descriptive web page with download links. information https://www.ncei.noaa.gov/archive/accession/oas/209090 HTTPS Web browser Descriptive Information Navigate directly to the URL for a descriptive web page with download links. information https://www.ncei.noaa.gov/archive/accession/download/209090 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0152/0209090/ FTP Any FTP client FTP These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP). download dataset NCEI Accession 0209090 v1.1 was published. 2020-02-20T20:41:18Z NCEI Accession 0209090 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0209090/1.1 HTTPS NCEI Accession 0209090 v1.1 published 2020-02-20T20:41:18Z download NCEI Accession 0209090 was revised and v2.2 was published. Updates were received for this dataset. These updates were copied into the data/0-data/ directory of this accession. These updates may provide additional files or replace obsolete files. This version contains the most complete and up-to-date representation of this archival information package. All of the files received prior to this update are available in the preceding version of this accession. 2020-03-30T23:30:20Z NCEI Accession 0209090 v2.2 publication https://www.ncei.noaa.gov/archive/accession/0209090/2.2 HTTPS NCEI Accession 0209090 v2.2 published 2020-03-30T23:30:20Z download dataset Parameter or Variable: Methane (CH4) (measured); Units: nmol; Observation Category: laboratory analysis; Sampling Instrument: Niskin bottle; Sampling and Analyzing Method: Water was collected using Niskin bottles and samples were transferred to glass vials. A nitrogen headspace was introduced, the sample was sterilized, and then allowed to equilibrate for at least 12 hours before analysis. Samples were analyzed for methane concentration on board the research vessel using a GC-FID instrument; Data Quality Method: Each sample was analyzed in duplicate. The instrument was calibrated daily using a 4 point calibration curve based on a nitrogen blank and 3 methane standards. Parameter or Variable: methane stable isotopes (measured); Units: per mille; Observation Category: laboratory analysis; Sampling Instrument: Niskin bottle; Sampling and Analyzing Method: Water was collected using Niskin bottles and samples were transferred to glass vials. A nitrogen headspace was introduced, the sample was sterilized, and then brought back to the laboratory for analysis. Samples were analyzed for methane stable isotopes using a GC-IRMS instrument; Data Quality Method: The instrument was calibrated daily based on known standards. Most samples were analyzed in duplicate. Parameter or Variable: Fraction oxidized (minimum) (calculated); Units: unitless; Observation Category: model output; Sampling Instrument: model output; Sampling and Analyzing Method: The fraction oxidized was calculated based on a Rayleigh model using measurements of stable methane isotopes, and a constant fractionation factor. The fraction oxidized has a range from minimum to maximum values based on how tightly the isotopic value of methane emitted from the seafloor could be constrained Parameter or Variable: Fraction oxidized (maximum) (measured); Units: unitless; Observation Category: model output; Sampling Instrument: model output; Sampling and Analyzing Method: The fraction oxidized was calculated based on a Rayleigh model using measurements of stable methane isotopes, and a constant fractionation factor. The fraction oxidized has a range from minimum to maximum values based on how tightly the isotopic value of methane emitted from the seafloor could be constrained Parameter or Variable: DEPTH - OBSERVATION (measured); Units: m; Observation Category: in situ; Sampling Instrument: CTD Parameter or Variable: TEMPERATURE - WATER [WATER TEMPERATURE] (measured); Units: c; Observation Category: in situ; Sampling Instrument: CTD Parameter or Variable: SALINITY (measured); Units: psu; Observation Category: in situ; Sampling Instrument: CTD Parameter or Variable: LATITUDE (measured); Units: degree; Observation Category: in situ; Sampling Instrument: GPS Parameter or Variable: LONGITUDE (measured); Units: degrees C; Observation Category: in situ; Sampling Instrument: GPS asNeeded Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness. NOAA National Centers for Environmental Information custodian CTD CTD Conductivity-Temperature-Depth probe GPS GPS Global Positioning System receiver satellite-based instrument used for geo-location, positioning and navigation Niskin bottle Niskin bottle Device for obtaining samples of seawater at a specific depth Why special entry for Niskin bottle but no entry for Nansen bottle? R/V Hugh R. Sharp R/V; University of Delaware; commissioned in 2006 to replace R/V Cape Henlopen; active July 2007