gov.noaa.nodc:0183542 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 2026-07-24T21:37:50Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) CTD, elemental (C/N ratios) and isotopic (13C, 15N) data collected from R/V Endeavor cruise EN496 in the northern Gulf of Mexico from 2011-07-03 to 2011-07-26 (NCEI Accession 0183542) 2018-12-18 publication 2018-12-18 creation NOAA National Centers for Environmental Information gov.noaa.nodc:0183542 NCEI Archive Management System 0183542 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 Inia M. Soto Ramos GRIIDC Inia.SotoRamos@tamucc.edu https://www.griidc.org/ HTTPS GRIIDC website Institution web page information resourceProvider GRIIDC https://www.griidc.org/ HTTPS GRIIDC website Institution web page information resourceProvider Joseph Montoya Georgia Institute of Technology montoya@gatech.edu http://www.gatech.edu/ HTTP Georgia Institute of Technology website Institution web page information pointOfContact Montoya, Joseph P. Georgia Institute of Technology / Department of Biology http://www.gatech.edu/ HTTP Georgia Institute of Technology website Institution web page information author tableDigital This dataset contains CTD, water quality and particle and zooplankton sample elemental (total C and N, C/N ratio) and isotopic (delta 13C, delta 15N) data collected during R/V Endeavor cruise EN496 in the northern Gulf of Mexico from 2011-07-03 to 2011-07-26. Particle and zooplankton samples were collected during cruise EN496 using a CTD-rosette and a MOCNESS. The objectives were to collect water column and benthic samples in the vicinity of the Mississippi River Plume, as well as, at/near active seeps. Elemental and isotopic data were collected at 18 stations, while CTD profiles were done at 51 locations. Elemental and isotopic data includes the delta 13C and 15N, total Nitrogen and Carbon and the C/N ratio. Hydrographic data was collected using a Sea-Bird SBE-9 and the data includes temperature, salinity, oxygen concentration, sound velocity, beam attenuation and transmission, sea level, Photosynthetically Active Radiation (PAR), fluorescence and surface irradiance. The purpose of this cruise was to study the interactions between the Mississippi Plume and offshore waters of the Gulf of Mexico. Funding Agency: Gulf of Mexico Research Initiative (GoMRI) Funding Agency: Gulf of Mexico Research Initiative Information & Data Cooperative (GRIIDC) 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 https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0183542 Preview graphic PNG 0183542 NCEI ACCESSION NUMBER 2018-12-13 publication Attenuation/Transmission BEAM ATTENUATION COEFFICIENT CONDUCTIVITY DELTA CARBON-13 DELTA NITROGEN-15 DEPTH - SENSOR FLUORESCENCE HYDROSTATIC PRESSURE LATITUDE LONGITUDE Potential temperature (theta) SALINITY SOUND VELOCITY surface irradiance TOTAL CARBON Total nitrogen WATER DENSITY water depth WATER LEVEL WATER TEMPERATURE theme NODC DATA TYPES THESAURUS CTD fluorometer Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS) oxygen sensor PAR Sensor instrument NODC INSTRUMENT TYPES THESAURUS in situ laboratory analyses profile water chemistry theme NODC OBSERVATION TYPES THESAURUS GRIIDC dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS Deepwater Horizon oil spill event (DWH) Gulf of Mexico Research Initiative (GoMRI) Gulf of Mexico Research Initiative Information & Data Cooperative (GRIIDC) project NODC PROJECT NAMES THESAURUS Coastal Waters of Gulf of Mexico Gulf of Mexico North Atlantic Ocean place NODC SEA AREA NAMES THESAURUS oceanography theme WMO_CategoryCode 2012-09-15 publication EN496 project Cruise ID EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > WATER DEPTH EARTH SCIENCE > OCEANS > OCEAN ACOUSTICS > ACOUSTIC VELOCITY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CARBON EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITROGEN EARTH SCIENCE > OCEANS > OCEAN OPTICS > ATTENUATION/TRANSMISSION EARTH SCIENCE > OCEANS > OCEAN OPTICS > FLUORESCENCE EARTH SCIENCE > OCEANS > OCEAN OPTICS > IRRADIANCE EARTH SCIENCE > OCEANS > OCEAN PRESSURE > WATER PRESSURE EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > POTENTIAL TEMPERATURE EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE EARTH SCIENCE > OCEANS > SALINITY/DENSITY > CONDUCTIVITY EARTH SCIENCE > OCEANS > SALINITY/DENSITY > DENSITY 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 Sea_water_potential_temperature theme NetCDF Climate and Forecast (CF) Metadata Convention Standard Names Carbon to nitrogen ratio Irradiance Seawater level Stable isotopes Total elemental carbon Total elemental nitrogen theme Provider Keywords CTD > Conductivity, Temperature, Depth FLUOROMETERS > FLUOROMETERS MOCNESS > MOCNESS Plankton Net OXYGEN METERS > OXYGEN METERS PAR SENSORS > Photosynthetically Active Radiation Sensors 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 Altimeter CTD-rosette Chelsea Seatech Wetlab C-Star SPAR Sea-Bird SBE 43 WET Labs ECO fluorometers instrument Provider Instruments R/V Endeavor platform Provider Platform Names OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF AMERICA OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF MEXICO 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 Northern Gulf of Mexico place Provider Place Names 85FUJX Send2NCEI Submission Package ID accessLevel: public otherRestrictions Cite as: Montoya, Joseph P. (2018). CTD, elemental (C/N ratios) and isotopic (13C, 15N) data collected from R/V Endeavor cruise EN496 in the northern Gulf of Mexico from 2011-07-03 to 2011-07-26 (NCEI Accession 0183542). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0183542. 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. Joseph Montoya. (2016). CTD Hydrographic data from Cruise R/V Endeavor (EN496), Louisiana, Mississippi, Alabama Shelf Break, July 2011 [Dataset]. Harte Research Institute. https://doi.org/10.7266/n7jm27nr 2016 publication International DOI Foundation (IDF) https://doi.org/10.7266/n7jm27nr https://doi.org/10.7266/n7jm27nr HTTPS https://doi.org/10.7266/n7jm27nr GRIIDC Data Webpage information Joseph Montoya author Harte Research Institute publisher tableDigital crossReference project Montoya, Joseph. (2016). Particle and zooplankton sample elemental (C,N) and isotopic (13C, 15N) data, cruise EN496, northern Gulf of Mexico, July 3-26, 2011 [Dataset]. Harte Research Institute. https://doi.org/10.7266/n7s75dcr 2016 publication International DOI Foundation (IDF) https://doi.org/10.7266/n7s75dcr https://doi.org/10.7266/n7s75dcr HTTPS https://doi.org/10.7266/n7s75dcr GRIIDC Data Webpage information Montoya, Joseph author Harte Research Institute publisher tableDigital crossReference project Weber, S. C., Peterson, L., Battles, J. J., Roberts, B. J., Peterson, R. N., Hollander, D. J., Chanton, J. P., Joye, S. B., & Montoya, J. P. (2016). Hercules 265 rapid response: Immediate ecosystem impacts of a natural gas blowout incident. Deep Sea Research Part II: Topical Studies in Oceanography, 129, 66–76. https://doi.org/10.1016/j.dsr2.2015.11.010 2016-07 publication International DOI Foundation (IDF) https://doi.org/10.1016/j.dsr2.2015.11.010 https://doi.org/10.1016/j.dsr2.2015.11.010 HTTPS https://doi.org/10.1016/j.dsr2.2015.11.010 Online Library information Weber, Sarah C. author Peterson, Leigha author Battles, Jessica J. author Roberts, Brian J. author Peterson, Richard N. author Hollander, David J. author Chanton, Jeffrey P. author Joye, Samantha B. author Montoya, Joseph P. author Elsevier BV publisher documentDigital Deep Sea Research Part II: Topical Studies in Oceanography 129 ISSN 0967-0645, pp. 66-76 crossReference sciencePaper Fernández‐Carrera, A., Rogers, K. L., Weber, S. C., Chanton, J. P., & Montoya, J. P. (2016). Deep Water Horizon oil and methane carbon entered the food web in the Gulf of Mexico. Limnology and Oceanography, 61(S1). https://doi.org/10.1002/lno.10440 2016-11 publication International DOI Foundation (IDF) https://doi.org/10.1002/lno.10440 https://doi.org/10.1002/lno.10440 HTTPS https://doi.org/10.1002/lno.10440 Online Library information Fernández‐Carrera, A. School of Biology Georgia Institute of Technology Atlanta Georgia author Rogers, K. L. Department of Earth Ocean and Atmospheric Science Florida State University Tallahassee Florida author Weber, S. C. School of Biology Georgia Institute of Technology Atlanta Georgia author Chanton, J. P. Department of Earth Ocean and Atmospheric Science Florida State University Tallahassee Florida author Montoya, J. P. School of Biology Georgia Institute of Technology Atlanta Georgia author Wiley publisher documentDigital Limnology & Oceanography 61(S1) ISSN 0024-3590, ISSN 1939-5590 crossReference sciencePaper eng; USA utf8 environment oceans -92.6042 -86.751 25.8612 29.2267 2011-07-03 2011-07-26 Data Parameters and Units: Cruise id, station (or event number), latitude (decimal degrees), longitude (decimal degrees), bottle number, date (Month, Day, Year), time (local, HH:MM:SS); depth (meters), d15N (delta-15N: per mil deviation from atmospheric N2), d13C (delta-13C: per mil deviation from VPDB), C:N (carbon to nitrogen ratio), total Nitrogen (micromole); total Carbon (micromol), salinity (Sal00, Sal11, units = PSU), density (Sigma-t00, Sigma-t11, units = kg/m^3), oxygen concentration (OxsatML/L, Sbeox0ML/L, Sbeox1ML/L, units = ml/L), potential temperature (Potemp090C, Potemp190C, units = degrees C), sound velocity in water (SvCM, v1, units = m/s), scan (Scan), scan standard deviation (ScanSD), TimeJ, TimeJ-SD, time elapsed (TimeS, units = s), time elapsed standard deviation (TimeS-SD, units = s), pressure (PrDM, units = db), pressure standard deviation (PrDM-SD, units = db), depth (DepSM, units = m), depth standard deviation (DepSM, units = m), temperature ITS-90 (T090C, T190C, T2-T190C, units = degrees C), temperature ITS-90 standard deviation (T090C-SD, T190C-SD, T2-T190C-SD, units = degrees C), conductivity (C0S/m, C1S/m, C2-C1S/m, units = Siemens/meter), conductivity standard deviation (C0S/m-SD, C1S/m-SD, C2-C1S/m-SD, units = Siemens/meter), voltage (V0, V2, V3, V4, V5, V7), voltage standard deviation (V0-SD, V2-SD, V3-SD, V4-SD, V5-SD), beam attenuation (BAT, Chelsea/Seatech/Wetlab CStar, units = 1/m), beam attenuation standard deviation (BAT-SD, units = 1/m), beam transmission (Xmiss, Chelsea/Seatech/Wetlab CStar, units = 1/m), beam transmission standard deviation (Xmiss -SD, units = 1/m), altimeter (AltM, units = m), altimeter standard deviation (AltM, units = m), Photosynthetically Active Radiation (PAR, units = microEinsteins/ m^2.s), PAR standard deviation (Par-SD, units = microEinsteins/ m^2.s), Oxygen (Sbeox0V, Sbeox1V, units = volts), Oxygen standard deviation (Sbeox0V, Sbeox1V, units = volts), fluorescence (FlECO-AFL, Wetlab ECO-AFL/FL, units = mg/m^3), fluorescence standard deviation (FlECO-AFL-SD, Wetlab ECO-AFL/FL, units = mg/m^3), surface irradiance (Spar, units = microEinsteins/m^2.s), surface irradiance standard deviation (Spar-SD, units = microEinsteins/m^2.s). 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CSV ASCII TEXT Excel 1.392 https://www.ncei.noaa.gov/archive/accession/0183542 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/183542 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/183542 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0129/0183542/ 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 0183542 v1.1 was published. 2018-12-18T19:52:13Z NCEI Accession 0183542 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0183542/1.1 HTTPS NCEI Accession 0183542 v1.1 published 2018-12-18T19:52:13Z download dataset Parameter or Variable: CONDUCTIVITY (measured); Units: Siemens/meter; Observation Category: in situ; Sampling Instrument: CTD Parameter or Variable: LATITUDE (measured); Units: decimal degrees; Observation Category: in situ; Sampling Instrument: CTD Parameter or Variable: LONGITUDE (measured); Units: decimal degrees; Observation Category: in situ; Sampling Instrument: CTD Parameter or Variable: DEPTH - SENSOR (measured); Units: meter; Observation Category: in situ; Sampling Instrument: CTD Parameter or Variable: DELTA CARBON-13 (measured); Units: parts per million; Observation Category: laboratory analysis; Sampling Instrument: Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS) Parameter or Variable: DELTA NITROGEN-15 (measured); Units: parts per million; Observation Category: laboratory analysis; Sampling Instrument: Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS) Parameter or Variable: carbon to nitrogen ratio (measured); Units: N; Observation Category: laboratory analysis; Sampling Instrument: Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS) Parameter or Variable: Total nitrogen (measured); Units: micromole; Observation Category: laboratory analysis; Sampling Instrument: Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS) Parameter or Variable: TOTAL CARBON (measured); Units: micromole; Observation Category: laboratory analysis; Sampling Instrument: Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS) Parameter or Variable: water depth (measured); Units: meter; Observation Category: laboratory analysis; Sampling Instrument: CTD Parameter or Variable: WATER TEMPERATURE (measured); Units: degrees C; Observation Category: in situ; Sampling Instrument: CTD Parameter or Variable: WATER DENSITY (measured); Units: kg/m^3; Observation Category: in situ; Sampling Instrument: CTD Parameter or Variable: SALINITY (measured); Units: psu; Observation Category: in situ; Sampling Instrument: CTD Parameter or Variable: oxygen concentration (measured); Units: ml/L; Observation Category: in situ; Sampling Instrument: CTD Parameter or Variable: Potential temperature (theta) (measured); Units: degrees C; Observation Category: in situ; Sampling Instrument: CTD Parameter or Variable: SOUND VELOCITY (measured); Units: m/s; Observation Category: in situ; Sampling Instrument: CTD Parameter or Variable: PRESSURE - WATER [HYDROSTATIC PRESSURE] (measured); Units: dbar; Observation Category: in situ; Sampling Instrument: CTD Parameter or Variable: BEAM ATTENUATION COEFFICIENT (measured); Units: 1/m; Observation Category: in situ; Sampling Instrument: Chelsea Seatech Wetlab C-Star Parameter or Variable: Photosynthetically Active Radiation (PAR) (measured); Units: microEinsteins/ m^2.s; Observation Category: in situ; Sampling Instrument: PAR Sensor Parameter or Variable: altimeter (measured); Units: m; Observation Category: in situ; Sampling Instrument: CTD Parameter or Variable: FLUORESCENCE (measured); Units: mg/m^3; Observation Category: in situ; Sampling Instrument: fluorometer Parameter or Variable: surface irradiance (measured); Units: microEinsteins/m^2.s; Observation Category: in situ; Sampling Instrument: Spar Parameter or Variable: stable isotopes (measured); Units: N/A; Observation Category: laboratory analysis; Sampling Instrument: Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS) 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 fluorometer fluorometer fluorometer Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS) Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS) MOCNESS is a much-improved, high-tech version of the humble sampling net. The letters in MOCNESS refer to the specific improvements: it's a Multiple Opening and Closing Net, with an Environmental Sensing System. As MOCNESS tows behind a research ship, each net can be opened and shut independently so that it samples a discrete patch of water. The researcher chooses exactly when by using the environmental sensing system. This is an array of sensors mounted on the instrument frame that relays water conditions up to the ship in real time. The data also help researchers match what they find in their sample to the physical properties of the seawater. oxygen sensor oxygen sensor Any instrument that measures oxygen content in a compound. PAR Sensor PAR Sensor Photosynthetically Active Radiation Sensor The PAR sensor measures global solar radiation from 400 to 700 nm, which approximates the spectral band active in photosynthesis. The response of the instrument falls sharply to zero on either side of this band, and between 400 and 670 nm it increases monotonically from about 50% to 100%. There is no protective glass dome over the receiving surface. Irradiance from the sun passes through a small white visible bandpass filter/diffuser in the shape of a horizontal disk at the top of the instrument. Within the instrument radiation is directed through a series of colored glass filters and onto a silicon photodiode detector. The factory-supplied calibration converts the signal from the detector to a flux of photons in micro-mole (of photons) s-1 m-2. (One micro-mole equals 6.022 E17 photons.) For the solar spectrum, these units may be converted to watts per square meter by dividing by 4.6. (http://www.srrb.noaa.gov/instrument/par.htm)