Catalog - Data.gov

Found 17 datasets matching "Mass Spectrophotometer".

Federal
Biological effects of ocean acidification on juvenile Atlantic surfclams (Spisula solidissima) observed in laboratory experiments from 2019-04-10 to 2019-07-03 (NCEI Accession 0245952)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2022-03-09T00:00:00.000+00:00
This dataset contains laboratory experimental data that were collected to examine the effects of elevated levels of carbon dioxide on the growth of Atlantic surfclam (Spisula solidissima), a...
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Search relevance: 39.64 | Views last month: 0
Federal
Analyses of water and tissue samples - Evaluating the impacts of pesticides on ESA-listed salmon and their habitats
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2017-11-29T00:00:00.000+00:00
Long-running science support for the agency (Office of Protected Resources, others) related to the use of modern pesticides throughout the United States as a limiting factor for endangered species...
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Search relevance: 32.67 | Views last month: 0
Federal
Ecosystem carbon exchange and nitrogen removal rates in two 33-year-old constructed salt marshes are similar to those in a nearby natural marsh 2018-11-30 to 2020-03-08 (NCEI Accession 0227949)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2021-04-21T00:00:00.000+00:00
We conducted a year-long study with the main objective of comparing seasonal plant productivity, ecosystem respiration (ER), denitrification, and dissimilatory nitrate reduction to ammonium (DNRA)...
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Search relevance: 29.08 | Views last month: 0
Federal
POPs and stable isotopes in bird and forage fish tissues - Persistent organic pollutant levels in juvenile salmonids, forage fish and their avian predators from Puget Sound and the outer WA coast
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2018-02-21T00:00:00.000+00:00
This project is examining contaminant loads of fish prey species of a resident marine bird (Rhinoceros Auklet) breeding in inland waters (Puget Sound) and in the northern California Current (outer...
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Search relevance: 28.57 | Views last month: 0
Federal
Saltmarsh carbon and nitrogen cycling nutrient data in two northern Gulf of Mexico saltmarsh plants from 2017-2018 (NCEI Accession 0209238)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2020-05-08T00:00:00.000+00:00
This dataset contains salt marsh nutrient data to determine the biogeochemical impact of elevated nutrient loading on ecosystem carbon dynamics and nitrate reduction pathways (denitrification and...
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Search relevance: 19.53 | Views last month: 0
Federal
Nitrate reduction rates and soil/ water chemistry from roadside ditches in the Mobile Bay (AL, USA) region (2018-05-23 to 2018-06-08) (NCEI Accession 0211099)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2020-07-15T00:00:00.000+00:00
Ninety-six roadside ditches spanning three landuse types in the Mobile Bay (Alabama, USA) region were sampled in May-June of 2018. Isotope pairing was used to measure nitrate reduction rates...
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Search relevance: 16.12 | Views last month: 0
Federal
Dissolved inorganic carbon (DIC), total alkalinity, pH on total scale, water temperature, salinity, dissolved oxygen, nutrients and other hydrographic and chemical data collected from discrete samples and profile observations during the CCGS Louis S. St-Laurent Joint Ocean Ice Study (JOIS-11) cruise (EXPOCODE 18SN20110721) in the Arctic Ocean from 2011-07-21 to 2011-08-18 (NCEI Accession 0232544)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2021-05-13T00:00:00.000+00:00
This dataset includes discrete profile measurements of dissolved inorganic carbon (DIC), total alkalinity, pH on total scale, water temperature, salinity, dissolved oxygen, nutrients and other...
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Search relevance: 15.99 | Views last month: 0
Federal
Dissolved inorganic carbon (DIC), total alkalinity, water temperature, salinity, dissolved oxygen, nutrients and other hydrographic and chemical data collected from discrete samples and profile observations during the CCGS Louis S. St-Laurent Joint Ocean Ice Study (JOIS-12) cruise (EXPOCODE 18SN20120802) in the Arctic Ocean from 2012-08-02 to 2012-08-30 (NCEI Accession 0232546)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2021-05-14T00:00:00.000+00:00
This dataset includes discrete profile measurements of dissolved inorganic carbon (DIC), total alkalinity, water temperature, salinity, dissolved oxygen, nutrients and other hydrographic and...
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Search relevance: 15.99 | Views last month: 0
Federal
Discrete profile and surface underway measurements of carbonate chemistry and others hydrographic and chemical parameters, collected during R/V Neeskay and R/V Osprey cruises in Lake Michigan from 2017-05-01 to 2022-04-30 (NCEI Accession 0259963)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2022-09-29T00:00:00.000+00:00
This dataset consists of discrete profile and surface underway measurements of carbonate chemistry and others hydrographic and chemical parameters, collected during R/V Neeskay and R/V Osprey...
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Search relevance: 15.87 | Views last month: 0
Federal
Sediment and porewater nitrification and organic matter data in a Northern Gulf of Mexico marsh from 2021-05-26 to 2022-05-21 (NCEI Accession 0301084)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2025-02-05T00:00:00.000+00:00
We conducted a year-long study with the main objective of comparing denitrification, anammox, and dissimilatory nitrate reduction to ammonium (DNRA) across three different vegetation zones...
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Search relevance: 14.53 | Views last month: 0
Federal
Data from: Acrylamide in fried sweetpotato chips: The relationship with free asparagine and effects of asparaginase
- Organization: Department of Agriculture
- Updated: 2025-09-24
Data DescriptionThese data are ‘Bayou Belle’ sweetpotato raw and chip compositions and acrylamide contents of model sweetpotato systems. Raw composition includes dry matter, glucose, fructose,...
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Search relevance: 14.19 | Views last month: 0
Federal
NCCOS Assessment: Chemical contaminants data from the Faga’alu Bay and Watershed, American Samoa before and after best management practices from 2014-01-18 to 2022-04-06 (NCEI Accession 0302885)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2025-04-16T00:00:00.000+00:00
This dataset represents a “before and after” sediment sampling effort from Faga’alu Bay and watershed, American Samoa, to evaluate the effectiveness of best management practices at a quarry site. ...
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Search relevance: 13.13 | Views last month: 0
Federal
Chemical and benthos data collected from CTD, bottle, and other instruments in the Chukchi Sea in 2009-2010 as part of the Chukchi Sea Offshore Monitoring in Drilling Area - Chemical and Benthos (COMIDA-CAB) project (NCEI Accession 0095566)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2016-09-09T00:00:00.000+00:00
This dataset contains physical, chemical, and biological data collected during research cruises for the Chukchi Sea Offshore Monitoring in Drilling Area (Chemical and Benthos) (COMIDA CAB)...
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Search relevance: 11.59 | Views last month: 1
Federal
Combined Sensor Program (CSP): Physical, optical, and chemical properties of atmospheric marine aerosols aboard NOAA R/V Discoverer in the central and tropical western Pacific, 1996-03-15 to 1996-04-12 (NCEI Accession 0311408)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2026-01-13T00:00:00.000+00:00
This dataset contains physical, optical, and chemical properties of atmospheric marine aerosols from aboard NOAA R/V Discoverer, collected 15 March to 12 April 1996 during the CSP field...
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Search relevance: 9.90 | Views last month: 0
Federal
Atlantic Tradewind Ocean-Atmosphere Mesoscale Interaction Campaign (ATOMIC): Physical, optical, and chemical properties of atmospheric marine aerosols aboard NOAA R/V Ronald H. Brown in the tropical North Atlantic, 2020-01-07 to 2020-02-11 (NCEI Accession 0311369)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2026-01-08T00:00:00.000+00:00
This dataset contains physical, optical, and chemical properties of atmospheric marine aerosols from aboard NOAA R/V Ronald H. Brown, collected 07 January to 11 February 2020 during the ATOMIC...
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Search relevance: 8.69 | Views last month: 0
Federal
Asian Pacific Regional Aerosol Characterization Experiment (ACE-Asia): Physical, optical, and chemical properties of atmospheric marine aerosols aboard NOAA R/V Ronald H. Brown in the western Pacific, 2001-03-15 to 2001-04-20 (NCEI Accession 0311457)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2026-01-13T00:00:00.000+00:00
This dataset contains physical, optical, and chemical properties of atmospheric marine aerosols from aboard NOAA R/V Ronald H. Brown, collected 15 March to 20 April 2001 during the ACE-Asia field...
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Search relevance: 8.10 | Views last month: 0
Federal
Physical and biochemical oceanographic data from the Hawaii Ocean Time-series (HOT) program collected by University of Hawaii at Station ALOHA in the Pacific Ocean 100 miles north of Oahu, Hawaii, since 1988
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2025-12-30T00:00:00.000+00:00
This dataset includes physical and biochemical oceanographic observational data from the Hawaii Ocean Time-series (HOT) Program, including thermosalinograph, CTD, bottle and biochemical data. The...
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Search relevance: 1.64 | Views last month: 0

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