Catalog - Data.gov

Found 39 datasets matching "Hydrogen-ion".

#1 Federal
ATom: In Situ Data from Caltech Chemical Ionization Mass Spectrometer (CIT-CIMS), V2
- Organization: National Aeronautics and Space Administration
- Updated: 2026-02-17
This dataset provides the concentrations of gas-phase organic and inorganic analytes measured by the California Institute of Technology (CIT) Chemical Ionization Mass Spectrometer (CIMS), or...
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Search relevance: 57.21 | Views last month: 0
#2 Federal
Climatological distribution of ocean acidification indicators from surface to 500 meters water depth on the North American ocean margins from 2003-12-06 to 2018-11-22 (NCEI Accession 0270962)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2024-02-16T00:00:00.000+00:00
This data package contains 1x1 degree coastal climatologies (mean fields of oceanographic variables on a regular geographic grid at specific depths) of pH on the Total Scale, total hydrogen ion...
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Search relevance: 55.98 | Views last month: 0
#3 Federal
Global surface ocean acidification indicators from 1750 to 2100 (NCEI Accession 0259391)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2025-04-25T00:00:00.000+00:00
This data package contains a hybrid surface OA data product that is produced based on three recent observational data products: (a) the Surface Ocean CO2 Atlas (SOCAT, version 2022), (b) the...
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Search relevance: 55.14 | Views last month: 6
#4 Federal
Global subsurface ocean acidification indicators at depth levels of 50, 100, and 200 meters from 1750-01-01 to 2100-12-31 (NCEI Accession 0287573)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2025-04-25T00:00:00.000+00:00
This data package contains 10 global subsurface ocean acidification (OA) indicators at standardized depth levels of 50, 100, and 200 meters. The indicators include fugacity of carbon dioxide, pH...
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Search relevance: 55.14 | Views last month: 0
#5 Federal
Surface ocean-biogeochemical patterns derived from a 0.10-degree resolution MOM5-TOPAZ hindcast from 1958-01-01 to 2019-12-31 (NCEI Accession 0285485)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2023-12-02T00:00:00.000+00:00
This dataset contains monthly surface outputs of ocean temperature, salinity, partial pressure of carbon dioxide, total alkalinity, dissolved inorganic carbon, carbonate ion, hydrogen ion,...
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Search relevance: 53.83 | Views last month: 0
#6 Federal
Turbidity, SOLAR RADIATION - ATMOSPHERIC and other data from UNKNOWN PLATFORMS OF AUSTRALIA in the South Atlantic Ocean from 1972-02-01 to 1977-11-15 (NCEI Accession 9000036)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2024-01-07T00:00:00.000+00:00
This dataset contains ocean station and current data collected by Water & Sewerage Board in South Atlantic Ocean and submitted by Mr. K.H.J. Robin. The physical oceanographic data was collected...
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Search relevance: 50.61 | Views last month: 0
#7 Federal
Recommended Gas Phase Enthalpies of Formation for Hydrogen-Oxygen (HxOy) Species
- Organization: National Institute of Standards and Technology
- Updated: 2016-03-11 00:00:00
Datasets in digital electronic formats are provided for data contained in the publication "Recommended Values for the Gas Phase Enthalpies of Formation of Hydrogen-Oxygen Species;" J. Res. Natl....
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Search relevance: 49.98 | Views last month: 0
#8 Federal
KW_chemistry_isotopes
- Organization: Department of the Interior
- Updated: 2020-08-27T00:00:00Z
Chemistry and Isotope Data Sample Collection: Water samples were collected from approximately 100 feet (30 meters) below the water table using either a 4 foot or 6 foot long stainless-steel...
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Search relevance: 47.89 | Views last month: 0
#9 Federal
GOES-R Series Level 1b SEISS Energetic Heavy Ion Sensor (EHIS) Product in Daily Aggregations
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2018-07-11T00:00:00.000+00:00
The Energetic Heavy Ions product contains heavy ion directional differential flux values measured in situ in geostationary orbit. The differential flux values are produced for the Hydrogen (H),...
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Search relevance: 45.80 | Views last month: 0
#10 Federal
Life Cycle Emissions Factors for Electricity Generation Technologies
- Organization: Department of Energy
- Updated: 2026-02-24T18:05:06Z
This dataset consists of a table containing the distribution of literature estimates of greenhouse gas emissions for the following electricity generation and storage technologies: biopower, coal,...
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Search relevance: 45.52 | Views last month: 0
#11 Federal
CARbon, tracers, and ancillary data In the MEDiterranean Sea (CARIMED) (NCEI Accession 0309255)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2025-12-09T00:00:00.000+00:00
This dataset consists of the CARIMED data synthesis product composed of data from 46 scientific cruises covering the global ocean between 1976 and 2018. It includes full depth discrete bottle...
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Search relevance: 45.13 | Views last month: 17
#12 Federal
CASSINI S MIMI INCA SENSOR CALIBRATED DATA V1.0
- Organization: National Aeronautics and Space Administration
- Updated: 2025-07-17
The Ion and Neutral Camera (INCA) obtains remote images of the global distribution of energetic ions for energies from 7 keV/nucleon to 8 MeV/nucleon, discriminated according to energy and mass...

Search relevance: 41.97 | Views last month: 0
#13 Federal
CASSINI S MIMI INCA SENSOR CALIBRATED DATA V1.0
- Organization: National Aeronautics and Space Administration
- Updated: 2025-07-17
The Ion and Neutral Camera (INCA) obtains remote images of the global distribution of energetic ions for energies from 7 keV/nucleon to 8 MeV/nucleon, discriminated according to energy and mass...

Search relevance: 40.24 | Views last month: 0
#14 Federal
Near-global, upper 2000 m estimates of preindustrial and year 2002 ocean pH, aragonite saturation state, carbon dioxide partial pressure, hydrogen ion concentration, and Revelle factor values, and their total changes caused by anthropogenic carbon accumulation in addition to the component of the changes induced by carbonate system nonlinearities (NCEI Accession 0290073)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2024-03-16T00:00:00.000+00:00
This dataset consists of year 2002 and preindustrial (pi) OA metric values and their uncertainties (u), total OA metric changes (d) due to anthropogenic carbon accumulation to the year 2002 and...
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Search relevance: 37.84 | Views last month: 0
#15 Federal
Global surface ocean pH, acidity, and Revelle Factor on a 1x1 degree global grid from 1770 to 2100 (NCEI Accession 0206289)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2022-01-14T00:00:00.000+00:00
This dataset contains spatial distribution of surface ocean pH (total hydrogen scale), acidity (or hydrogen ion activity, unit: nmol/kg, or 10^-9 mol/kg) and Revelle Factor (a measure of the...
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Search relevance: 36.50 | Views last month: 0
#16 Federal
TWINS 2 Lyman Alpha Detector (LAD) Geocorona
- Organization: National Aeronautics and Space Administration
- Updated: 2026-02-17
TWINS, Two Wide-angle Imaging Neutral-atom Spectrometers, is a Mission of Opportunity under NASA's Small Explorer, SMEX, Program. TWINS-1 and TWINS-2 are the Designations for NASA-Sponsored...
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Search relevance: 31.91 | Views last month: 1
#17 Federal
TWINS 1 Lyman Alpha Detector (LAD) Geocorona
- Organization: National Aeronautics and Space Administration
- Updated: 2026-02-17
TWINS, Two Wide-angle Imaging Neutral-atom Spectrometers, is a Mission of Opportunity under NASA's Small Explorer, SMEX, Program. TWINS-1 and TWINS-2 are the Designations for NASA-Sponsored...
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Search relevance: 31.81 | Views last month: 0
#18 Federal
TWINS 1 Images of Plasma Sheet Ion Temperature during Storms calculated from Energetic Neutral Atom (ENA) Measurements
- Organization: National Aeronautics and Space Administration
- Updated: 2026-02-17
TWINS, Two Wide-angle Imaging Neutral-atom Spectrometers, is a Mission of Opportunity under NASA's Small Explorer, SMEX, Program. TWINS-1 and TWINS-2 are the Designations for NASA-Sponsored...
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Search relevance: 31.72 | Views last month: 0
#19 Federal
TWINS 2 Images of Plasma Sheet Ion Temperature during Storms calculated from Energetic Neutral Atom (ENA) Measurements
- Organization: National Aeronautics and Space Administration
- Updated: 2026-02-17
TWINS, Two Wide-angle Imaging Neutral-atom Spectrometers, is a Mission of Opportunity under NASA's Small Explorer, SMEX, Program. TWINS-1 and TWINS-2 are the Designations for NASA-Sponsored...
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Search relevance: 31.38 | Views last month: 0
#20 Federal
Chemical analyses and precipitation depth data for wet deposition samples collected as part of the National Atmospheric Deposition Program in the Colorado Front Range, 2017-2019
- Organization: Department of the Interior
- Updated: 2023-07-07T00:00:00Z
The USGS Precipitation Chemistry Quality Assurance Project (PCQA) conducts research using the infrastructure of the National Atmospheric Deposition Program (NADP) National Trends Network (NTN)....
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Search relevance: 29.55 | Views last month: 0

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