Ammonia, silicate, phosphate, nitrite+nitrate, dissolved oxygen, and other variables collected from profile and discrete sample observations using CTD, nutrient autoanalyzer, and other instruments from NOAA Ship Delaware II, NOAA Ship Gordon Gunter, NOAA Ship Henry B. Bigelow, NOAA Ship Okeanos Explorer, and NOAA Ship Pisces in the Gulf of Maine, Georges Bank, and Mid-Atlantic Bight from 2009-11-03 to 2016-08-19 (NCEI Accession 0127524)

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Metadata Last Checked: January 29, 2026 | Last Modified: 2021-02-05T00:00:00.000+00:00

This dataset contains nutrient concentrations, temperature, salinity, density and dissolved oxygen values measured by CTD profiles on the U.S. Northeast Continental Shelf in support of ocean acidification research. Nutrients were measured in the laboratory using water samples collected during the CTD profiles at discrete depths. Ocean acidification is associated with increased concentrations of carbon dioxide that forms carbonic acid when dissolved in water. Marine primary production plays an important part in the carbon cycle by converting inorganic forms of carbon into organic matter. Variations in the concentrations of nutrients can limit or enhance primary production rates. An understanding of nutrient dynamics is therefore important to understanding and predicting marine carbon cycling and possible future impacts of ocean acidification.

Find Related Datasets

Click any tag below to search for similar datasets

Complete Metadata

@type	dcat:Dataset
accessLevel	non-public
contactPoint	{ "fn": "NOAA National Centers for Environmental Information", "@type": "vcard:Contact", "hasEmail": "mailto:ncei.info@noaa.gov" }
describedByType	application/octet-steam
description	This dataset contains nutrient concentrations, temperature, salinity, density and dissolved oxygen values measured by CTD profiles on the U.S. Northeast Continental Shelf in support of ocean acidification research. Nutrients were measured in the laboratory using water samples collected during the CTD profiles at discrete depths. Ocean acidification is associated with increased concentrations of carbon dioxide that forms carbonic acid when dissolved in water. Marine primary production plays an important part in the carbon cycle by converting inorganic forms of carbon into organic matter. Variations in the concentrations of nutrients can limit or enhance primary production rates. An understanding of nutrient dynamics is therefore important to understanding and predicting marine carbon cycling and possible future impacts of ocean acidification.
distribution	[ { "@type": "dcat:Distribution", "title": "Project Metadata", "accessURL": "https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0127524.html", "description": "Navigate directly to the URL for a descriptive web page with download links.", "describedByType": "application/octet-steam" }, { "@type": "dcat:Distribution", "title": "NCEI Dataset Landing Page", "mediaType": "placeholder/value", "description": "Navigate directly to the URL for a descriptive web page with download links.", "downloadURL": "https://doi.org/10.7289/v5hq3wv3", "describedByType": "application/octet-steam" }, { "@type": "dcat:Distribution", "title": "Descriptive Information", "mediaType": "placeholder/value", "description": "Navigate directly to the URL for a descriptive web page with download links.", "downloadURL": "https://www.ncei.noaa.gov/archive/accession/oas/127524", "describedByType": "application/octet-steam" }, { "@type": "dcat:Distribution", "title": "HTTPS", "mediaType": "placeholder/value", "description": "Navigate directly to the URL for data access and direct download.", "downloadURL": "https://www.ncei.noaa.gov/archive/accession/download/127524", "describedByType": "application/octet-steam" }, { "@type": "dcat:Distribution", "title": "FTP", "mediaType": "placeholder/value", "description": "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).", "downloadURL": "ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0075/0127524/", "describedByType": "application/octet-steam" }, { "@type": "dcat:Distribution", "title": "https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0169111.html", "accessURL": "https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0169111.html", "description": "Related data", "describedByType": "application/octet-steam" }, { "@type": "dcat:Distribution", "title": "https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0169051.html", "accessURL": "https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0169051.html", "description": "Related data", "describedByType": "application/octet-steam" }, { "@type": "dcat:Distribution", "title": "https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0170177.html", "accessURL": "https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0170177.html", "description": "Related data", "describedByType": "application/octet-steam" }, { "@type": "dcat:Distribution", "title": "https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system", "mediaType": "placeholder/value", "description": "OCADS website", "downloadURL": "https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system", "describedByType": "application/octet-steam" }, { "@type": "dcat:Distribution", "title": "GCMD Keyword Forum Page", "mediaType": "placeholder/value", "description": "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", "downloadURL": "https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords", "describedByType": "application/octet-steam" }, { "@type": "dcat:Distribution", "title": "NCEI Contact Information", "mediaType": "placeholder/value", "description": "Information for contacts at NCEI.", "downloadURL": "https://www.ncei.noaa.gov/contact", "describedByType": "application/octet-steam" } ]
identifier	gov.noaa.nodc:0127524
issued	2015-05-04T00:00:00.000+00:00
keyword	[ "0127524", "AMMONIA (NH3)", "DISSOLVED OXYGEN", "nitrate + nitrite content (concentration)", "phosphate", "SALINITY", "SIGMA-THETA", "silicate", "WATER TEMPERATURE", "CTD", "nutrient autoanalyzer", "oxygen sensor", "thermosalinograph", "discrete sample", "profile", "NOAA Ship Delaware II", "NOAA Ship Gordon Gunter", "NOAA Ship Henry B. Bigelow", "NOAA Ship Okeanos Explorer", "NOAA Ship Pisces", "NOAA Northeast Fisheries Science Center, Narragansett Laboratory", "University of Maine", "NOAA Northeast Fisheries Science Center, Narragansett Laboratory", "NODC Ocean Acidification Scientific Data Stewardship (OADS)", "US DOC; NOAA; Office of Oceanic and Atmospheric Research; Ocean Acidification Program (OAP)", "Georges Bank", "Gulf of Maine", "Mid-Atlantic Bight", "North Atlantic Ocean", "oceanography", "DOC/NOAA/NESDIS/NODC > National Oceanographic Data Center, NESDIS, NOAA, U.S. Department of Commerce", "DOC/NOAA/NMFS/NEFSC > Northeast Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce", "UMAINE > University of Maine", "DE0911", "DE1001", "DE1012", "DE1102", "DE1105", "DE1109", "DE1202", "EX1304", "EX1305", "EX1403", "GU1302", "GU1305", "GU1401", "GU1608", "GU1701", "HB1202", "HB1205", "HB1502", "HB1701", "PC1207", "PC1301", "PC1405", "PC1607", "PC1609", "316G20091103", "316G20100202", "316G20101106", "316G20110204", "316G20110602", "316G20111101", "316G20120206", "334A20130709", "334A20130825", "334A20140510", "334B20121027", "334B20130210", "334B20141103", "334B20160809", "334B20161019", "33GG20130609", "33GG20131114", "33GG20140301", "33GG20160521", "33GG20170516", "33HH20120602", "33HH20120807", "33HH20150519", "33HH20170211", "Ocean Acidification Program (OAP)", "Ocean Carbon and Acidification Data System (OCADS) Project", "Project ID: NEFSC FY2015-FY2017 ECM", "Project title: Monitoring of Water Column DIC, TAlk, and pH on the Northeast U.S. Shelf and the Development of Ocean Acidification Indicators to Inform Marine Resource Management", "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > AMMONIA", "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRATE", "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRITE", "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > OXYGEN", "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PHOSPHATE", "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > SILICATE", "EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE", "EARTH SCIENCE > OCEANS > SALINITY/DENSITY > DENSITY", "EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY", "Discrete measurement", "Profile", "AMMONIA", "CTDOXY", "CTDOXYMOL", "CTDPRS", "CTDSAL", "CTDTMP", "Depth_sample", "Depth_station", "NITRIT+NITRAT", "PHSPHT", "SILCAT", "Sigma-Theta", "AUTOANALYZER > AUTOANALYZER", "CTD > Conductivity, Temperature, Depth", "OXYGEN METERS > OXYGEN METERS", "THERMOSALINOGRAPHS", "Ships", "DELAWARE II (ICES code: 316G)", "GORDON GUNTER (call sign: WTEO, ICES code: 33GG, 1998-)", "HENRY B. BIGELOW (call sign: WTDF, ICES code: 33HH, 2005-)", "OKEANOS EXPLORER (call sign: WTDH, ICES code: 334A, 2008-)", "PISCES (call sign: WTDL, ICES code: 334B, 2009-)", "OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN", "OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GEORGES BANK", "OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF MAINE", "Gulf of Maine, Georges Bank, Mid-Atlantic Bight, Mid Atlantic Bight, Middle Atlantic Bight, Northeast coast of the United States (US)", "Georges Bank", "Gulf of Maine", "Mid-Atlantic Bight", "Northeastern coast of the United States" ]
landingPage	https://www.ncei.noaa.gov/contact
language	[]
license	https://creativecommons.org/publicdomain/zero/1.0/
modified	2021-02-05T00:00:00.000+00:00
publisher	{ "name": "NOAA National Centers for Environmental Information", "@type": "org:Organization" }
references	[ "https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0169111.html", "https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0169051.html", "https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0170177.html", "https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system" ]
rights	otherRestrictions
spatial	-65.433,28.492,-79.344,44.488
temporal	2009-11-03T00:00:00+00:00/2016-08-19T00:00:00+00:00
title	Ammonia, silicate, phosphate, nitrite+nitrate, dissolved oxygen, and other variables collected from profile and discrete sample observations using CTD, nutrient autoanalyzer, and other instruments from NOAA Ship Delaware II, NOAA Ship Gordon Gunter, NOAA Ship Henry B. Bigelow, NOAA Ship Okeanos Explorer, and NOAA Ship Pisces in the Gulf of Maine, Georges Bank, and Mid-Atlantic Bight from 2009-11-03 to 2016-08-19 (NCEI Accession 0127524)