gov.noaa.ncei.oer:EX1709-OMZTest_Profile_COLLECTION 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 2026-03-23T20:25:42 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Profiling Sensor to Map N2 Gas Production in OMZs - EX1709 EX1709-OMZTest 2017-10-16 publication EX1709-OMZTest Oxygen Minimum Zones (OMZs) play important roles in regulating the ocean's global carbon and nitrogen cycles. In these functionally anoxic waters, denitrifying and anammox microbes remove nitrogenous nutrients from the biosphere by transformation to biologically unavailable nitrogen gas (N2). For this project, scientists developed a new in situ profiling sensor to detect this 'excess' N2 in OMZ regions in order to quantify these N-loss processes. The new sensor incorporated recent but reliable and proven technical advances in membrane and pressure sensor technologies, and therefore its development was relatively low risk. Compared to existing, slow response sensors, the new sensor had low production cost and could easily be added to any ship's rosette CTD. Scientists' near-term goal was to demonstrate the sensor on two NOAA research vessels and begin to collect high-quality excess N2 data in OMZs to document baseline excess N2 inventories. Their long-term goal was to determine if excess N2 inventories in OMZs are increasing as a result of ocean deoxygenation. It was expected that the new sensor can be easily adapted for use on other profiling platforms (autonomous underwater vehicles, remotely operated vehicles, winched profilers, etc.) and be used more widely to study air-sea gas flux and net community metabolism. Funding for this project was provided by NOAA Ocean Exploration via its Ocean Exploration Fiscal Year 2016 Funding Opportunity. To measure biologically produced excess nitrogen (N2 gas produced as a result of denitrification processes) in the Eastern Tropical North Pacific (ETNP) Oxygen Minimum Zone (OMZ) located in international waters. 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 Dr. Craig McNeil Applied Physics Laboratory, University of Washington Scientist, Chief principalInvestigator notPlanned Honolulu Hawaii Panama City Panama North Pacific Ocean place Limits of Oceans and Seas Special Publication S-23 1953-01-01 revision 3rd International Hydrographic Organization (IHO) http://www.iho-ohi.net/iho_pubs/standard/S-23/S23_1953.pdf Limits of Oceans and Seas Maintained by IHO information publisher Earth Science > Oceans > Marine Environment Monitoring Earth Science > Oceans > Aquatic Sciences 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 expedition exploration explorer marine education noaa ocean ocean discovery ocean education ocean exploration ocean exploration and research OER ocean literacy ocean research science scientific mission scientific research sea stewardship systematic exploration technology transformational research undersea underwater Ocean Exploration and Research (OER) Program Discovery Keywords NOAA/OAR/OER - Ocean Exploration and Research 301-734-1014 301-713-4252 1315 East-West Hwy, SSMC3, #10210 Silver Spring MD 20910 USA oceanexplorer@noaa.gov 8am-5pm, Monday through Friday resourceProvider This is a list of static and vetted keywords to assist in search and discovery of Ocean Exploration and Research (OER) program-related records. 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URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian NOAA Ship Okeanos Explorer platform Global Change Master Directory (GCMD) Platform 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 CTD GTD instrument Global Change Master Directory (GCMD) Instrument 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 DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce DOC/NOAA/OAR/OER > Office of Ocean Exploration and Research, Oceanic & Atmospheric Research, 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 Access Constraints: No access constraints Use Constraints: No use constraints. Profiling Sensor to Map N2 Gas Production in OMZs - EX1709 publication Cruise ID: EX1709-OMZTest NOAA Office of Ocean Exploration and Research https://data.noaa.gov/metaview/page?xml=NOAA/NESDIS/ncei/oer//iso/xml/EX1709-OMZTest_COLLECTION.xml information largerWorkCitation operation eng; USA oceans geoscientificInformation -157.97092 -78.34357 6.74137 21.3694 2017-10-16 2017-11-11 CTD and GTD data. referenceInformation 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 distributor 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. RAW https://www.ncei.noaa.gov/metadata/geoportal/rest/metadata/item/EX1709-OMZTest_COLLECTION/html/ HTTPS Metadata Landing Page completeMetadata https://www.ncei.noaa.gov/maps/oer-digital-atlas/mapsOE.htm information OER Digital Atlas information dataset Processing Steps CTD - The SBEDataProcessing-Win32 software's data processing suite sensor config files (.psa), along with raw CTD data (.hex), produces Niskin bottle trigger information (.ros). These files are used by the software package to produce human readable files with converted data in engineering units (.cnv are converted text files, .btl and are rosette Niskin ‘bottle’ information files). GTD - Post-processed data for derived quantities, exported as a text file. Applied Physics Laboratory, University of Washington processor repository NOAA National Centers for Environmental Information NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015. 2015-04-22T00:00:00 unclassified none asNeeded NOAA Ship Okeanos Explorer NOAA Ship Okeanos Explorer is the only federal vessel dedicated to exploring our largely unknown ocean for the purpose of discovery and the advancement of knowledge about the deep ocean. The ship is operated by the NOAA Commissioned Officer Corps and civilians as part of NOAA's fleet managed by NOAA's Office of Marine and Aviation Operations. Mission equipment is operated by NOAA's Office of Ocean Exploration and Research in partnership with the Global Foundation for Ocean Exploration. NOAA Ship Okeanos Explorer Research Vessel