gov.noaa.nodc:0240146 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 2026-03-24T18:44:01Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Physical and biogeochemical CTD, ADCP, and towed vehicle data collected for the Mechanisms Controlling Hypoxia Project in the northern Gulf of Mexico from 2010-04-06 to 2014-08-12 (NCEI Accession 0240146) 2021-08-17 publication 2021-08-11 creation International DOI Foundation (IDF) 10.25921/e0vh-da33 NOAA National Centers for Environmental Information gov.noaa.nodc:0240146 NCEI Archive Management System 0240146 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 Steven DiMarco Texas A&M University (TAMU) sdimarco@tamu.edu https://www.tamu.edu/ HTTPS Texas A&M University (TAMU) website Institution web page information resourceProvider NOAA National Centers for Environmental Information (NCEI) resourceProvider Steven DiMarco Texas A&M Geochemical and Environmental Research Group (TAMU GERG) sdimarco@tamu.edu http://gerg.tamu.edu/ HTTP Texas A&M Geochemical and Environmental Research Group (TAMU GERG) website Institution web page information principalInvestigator DiMarco, Steven F. Texas A&M University - College Station Geochemical and Environmental Research Group sdimarco@tamu.edu http://gerg.tamu.edu/ HTTP Texas A&M Geochemical and Environmental Research Group (TAMU GERG) website Institution web page information author Texas A&M Geochemical and Environmental Research Group (TAMU GERG) http://gerg.tamu.edu/ HTTP Texas A&M Geochemical and Environmental Research Group (TAMU GERG) website Institution web page information contributor tableDigital The physical and biogeochemical processes that control and maintain the hypoxic zone in the northern Gulf of Mexico are complex and their relative strengths are known to vary temporally and spatially at many scales. The MCH Project was funded by NOAA from 2003-2016 and consisted of an integrated observational and numerical modeling approach to better understand the interactions of the physical, biological, and geochemical processes and their variability across the entire Texas/Louisiana shelf. This information contributes to a comprehensive description of the mechanisms that control hypoxia in the northern Gulf of Mexico. Environmental and oceanographic observations were recorded on 31 process-oriented research cruises and resulted in more than 120 towed transects, ~5000 CTD casts, ~30000 water samples, and more than 50000 km of ship flow-through system data. The data represented in this submission account for 15 research cruises and is the second of two submissions to NCEI; access to first submission is Accession 0088164. This dataset is available to the public for a wide variety of uses including scientific research and analysis. Funding Agency: US DOC; NOAA; NOS; National Centers for Coastal Ocean Science; Center for Sponsored Coastal Ocean Research 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:0240146 Preview graphic PNG 0240146 NCEI ACCESSION NUMBER 2021-08-10 publication Chromophoric Dissolved Organic Matter (CDOM) DISSOLVED OXYGEN FLUORESCENCE hypoxia PHOTOSYNTHETIC ACTIVE RADIATION (PAR) SALINITY SIGMA-T turbidity WATER DENSITY water depth WATER TEMPERATURE theme NODC DATA TYPES THESAURUS ADCP CTD undulating towed profiler instrument NODC INSTRUMENT TYPES THESAURUS chemical in situ physical theme NODC OBSERVATION TYPES THESAURUS GYRE PELICAN platform NODC PLATFORM NAMES THESAURUS Texas A&M Geochemical and Environmental Research Group dataCentre NODC COLLECTING INSTITUTION NAMES THESAURUS NOAA National Centers for Environmental Information dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS Gulf of Mexico Ecosystems and Hypoxia Assessment (NGOMEX) MECHANISMS CONTROLLING HYPOXIA ON THE LOUISIANA SHELF (MCH) project NODC PROJECT NAMES THESAURUS Coastal Waters of Gulf of Mexico Coastal Waters of Texas Gulf of Mexico place NODC SEA AREA NAMES THESAURUS oceanography theme WMO_CategoryCode 2012-09-15 publication DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce TAMU/GERG > Geochemical & Environmental Research Group, Texas A&M University dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2026 revision 23 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 EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > WATER DEPTH EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > HYPOXIA EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ORGANIC MATTER EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > OXYGEN EARTH SCIENCE > OCEANS > OCEAN OPTICS > FLUORESCENCE EARTH SCIENCE > OCEANS > OCEAN OPTICS > PHOTOSYNTHETICALLY ACTIVE RADIATION EARTH SCIENCE > OCEANS > OCEAN OPTICS > TURBIDITY EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE EARTH SCIENCE > OCEANS > SALINITY/DENSITY > DENSITY EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY theme Global Change Master Directory (GCMD) Science Keywords 2026 revision 23 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 Pressure Sea water velocity theme Provider Keywords ADCP > Acoustic Doppler Current Profiler CTD > Conductivity, Temperature, Depth SCANFISH > SHIP-TOWED UNDULATING VEHICLE instrument Global Change Master Directory (GCMD) Instrument Keywords 2026 revision 23 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 Ships platform Global Change Master Directory (GCMD) Platform Keywords 2026 revision 23 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 GYRE (ICES code: 32GY) PELICAN (call sign: FNJF, ICES code: 35PC, 1967-1988) platform ICES/SeaDataNet Ship Codes R/V Blazing 7 R/V Manta platform Provider Platform Names 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 23 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 T937RN Send2NCEI Submission Package ID accessLevel: Public otherRestrictions Cite as: DiMarco, Steven F. (2021). Physical and biogeochemical CTD, ADCP, and towed vehicle data collected for the Mechanisms Controlling Hypoxia Project in the northern Gulf of Mexico from 2010-04-06 to 2014-08-12 (NCEI Accession 0240146). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/e0vh-da33. 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. DiMarco, Steven F. (2012). Physical and chemical data collected by bottle and CTD in the Gulf of Mexico from R/V Gyre and R/V Pelican, 2004-04 to 2009-07 to help resolve the dominant oceanographic processes that control the timing, duration, and severity of hypoxia of the region (NCEI Accession 0088164). NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/rtbv-yv17. 2012-04-13 publication International DOI Foundation (IDF) https://doi.org/10.25921/rtbv-yv17 NOAA National Centers for Environmental Information gov.noaa.nodc:0088164 https://doi.org/10.25921/rtbv-yv17 HTTPS https://doi.org/10.25921/rtbv-yv17 Related dataset information DiMarco, Steven F. Texas A&M University - College Station Geochemical and Environmental Research Group sdimarco@tamu.edu https://www.tamu.edu/ HTTPS Texas A&M University (TAMU) website Institution web page information author NOAA National Centers for Environmental Information (NCEI) publisher tableDigital crossReference project MCH Atlas: Oceanographic Observations of the Mechanisms Controlling Hypoxia Project 2017 publication https://sites.google.com/a/tamu.edu/mchatlas/introduction https://sites.google.com/a/tamu.edu/mchatlas/introduction HTTPS MCH Atlas MCH Atlas information DiMarco, Steven F. Texas A > M University author Zimmerle, Heather M. Texas A > M University author Texas A > M University, Texas Sea Grant publisher documentDigital crossReference sciencePaper eng; USA utf8 environment oceans -97.05 -88.53 27.72 29.9619 2010-04-06 2014-08-12 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 800.788 https://doi.org/10.25921/e0vh-da33 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/240146 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/240146 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0185/0240146/ 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 0240146 v1.1 was published. 2021-08-17T19:00:47Z NCEI Accession 0240146 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0240146/1.1 HTTPS NCEI Accession 0240146 v1.1 published 2021-08-17T19:00:47Z download dataset Parameter or Variable: DISSOLVED OXYGEN (measured); Units: mL/L; Observation Category: in situ; Sampling Instrument: CTD; Sampling and Analyzing Method: SBE-37 IMP-IDO MicroCat and RINKO-III Galvanic O2 ARO CAV Parameter or Variable: SALINITY (measured); Units: psu; Observation Category: in situ; Sampling Instrument: CTD; Sampling and Analyzing Method: SBE-43 19plus V2 Parameter or Variable: WATER TEMPERATURE (measured); Units: degrees Celsius; Observation Category: in situ; Sampling Instrument: CTD; Sampling and Analyzing Method: SBE-43 19plus V2 Parameter or Variable: WATER DENSITY (measured); Units: kg/m^3; Observation Category: in situ; Sampling Instrument: CTD Parameter or Variable: FLUORESCENCE (measured); Units: mg/m^3; Observation Category: in situ; Sampling Instrument: CTD Parameter or Variable: turbidity (measured); Units: NTU; Observation Category: in situ; Sampling Instrument: Undulating towed profiler Parameter or Variable: Chromophoric Dissolved Organic Matter (CDOM) (measured); Units: mg/m^3; Observation Category: in situ; Sampling Instrument: Undulating towed profiler; Sampling and Analyzing Method: Acrobat Undulating Towfish Parameter or Variable: Sea water Pressure (measured); Units: dbar; Observation Category: in situ; Sampling Instrument: Undulating towed profiler Parameter or Variable: water depth (measured); Units: m; Observation Category: in situ; Sampling Instrument: CTD Parameter or Variable: SIGMA-T (measured); Units: kg/m^3; Observation Category: in situ; Sampling Instrument: Undulating towed profiler Parameter or Variable: PHOTOSYNTHETIC ACTIVE RADIATION (PAR) (measured); Units: W/m^2; Observation Category: in situ; Sampling Instrument: Undulating towed profiler Parameter or Variable: Sea water velocity (measured); Units: m/s; Observation Category: in situ; Sampling Instrument: ADCP asNeeded Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness. NOAA National Centers for Environmental Information custodian ADCP ADCP Acoustic Doppler Current Profiler The Acoustic Doppler Current Profiler (ADCP) measures currents beneath a ship while underway. Sound signals sent from the moving ship bounce back to receivers aboard the ship. This provides a profile of water movement relative to the ship-precise modern navigation, allowing the ship's motion to be subtracted from the data. These devices are also used on moorings and profilers and, along with acoustic backscattering, measure animal biomass. Particles in the path of the sound waves, mostly plankton, reflect a small part of the sound energy back toward receivers, allowing researchers to make remote estimates of the sizes and numbers of animals present in the water column. Before the 1970's, the most technologically advanced instrument used to measure water velocity was known as a Doppler speed log. This evolved into the first commercial ADCP, produced in the mid-1970's, which used averaging. Later in the 1970's, the first vessel-mounted ADCP was developed to measure water velocity more accurately and to allow measurement in range cells over a depth profile. As instruments evolved, so did new techniques in Doppler signal processing. Initially, Doppler speed logs used simple analog signal processing methods, which are still used in some commercial speed logs today. However, the first ADCPs incorporated analog-to-digital signal conversion over a narrow communication bandwidth. Around 1990, this technique was developed into broadband signal processing. Since then, broadband ADCPs have been able to generate very accurate, real-time velocity measurements. CTD CTD Conductivity-Temperature-Depth probe undulating towed profiler undulating towed profiler A towed, undulating vehicle systen designed for collecting profile data of the water column in oceanographic, bathymetric and environmental monitoring applications GYRE Flag: United States Vessel Type: Oceanographic Research IMO: 7318999 DOB: 1973-10 PELICAN PELICAN