A global monthly climatology of total alkalinity (AT): a neural network approach (NCEI Accession 0222470)
This dataset contains global monthly climatology of oceanic total alkalinity (AT). Total alkalinity (AT) monthly climatology was created from a neural network approach (Broullón et al., 2019). The neural network was trained with GLODAPv2.2019 data (Olsen et al., 2019) using as predictor variables position (latitude, longitude and depth), temperature, salinity, phosphate, nitrate, silicate and dissolved oxygen. The relations extracted between these predictor variables and AT were used to obtain the climatology passing through the network global monthly climatologies of the predictor variables: temperature and salinity fields of the World Ocean Atlas version 2013 (WOA13), filtered WOA13 oxygen (fifth-order one-dimensional median filter through the depth dimension; see Broullón et al., 2019 for details) and nutrients computed using CANYON-B (Bittig et al., 2018) over the three previous fields. The obtained climatology has a 1ºx1º spatial resolution and 102 depth levels between 0 and 5500 m, with a monthly resolution from 0 to 1500 m and an annual resolution from 1550 to 5500m.
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 global monthly climatology of oceanic total alkalinity (AT). Total alkalinity (AT) monthly climatology was created from a neural network approach (Broullón et al., 2019). The neural network was trained with GLODAPv2.2019 data (Olsen et al., 2019) using as predictor variables position (latitude, longitude and depth), temperature, salinity, phosphate, nitrate, silicate and dissolved oxygen. The relations extracted between these predictor variables and AT were used to obtain the climatology passing through the network global monthly climatologies of the predictor variables: temperature and salinity fields of the World Ocean Atlas version 2013 (WOA13), filtered WOA13 oxygen (fifth-order one-dimensional median filter through the depth dimension; see Broullón et al., 2019 for details) and nutrients computed using CANYON-B (Bittig et al., 2018) over the three previous fields. The obtained climatology has a 1ºx1º spatial resolution and 102 depth levels between 0 and 5500 m, with a monthly resolution from 0 to 1500 m and an annual resolution from 1550 to 5500m. |
| distribution |
[
{
"@type": "dcat:Distribution",
"title": "Project Metadata",
"accessURL": "https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0222470.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/10.25921/5p69-y471",
"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/222470",
"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/222470",
"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/arc0164/0222470/",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "https://doi.org/10.5194/essd-11-1109-2019",
"mediaType": "placeholder/value",
"description": "journal article",
"downloadURL": "https://doi.org/10.5194/essd-11-1109-2019",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "https://doi.org/10.3389/fmars.2018.00328",
"mediaType": "placeholder/value",
"description": "journal article",
"downloadURL": "https://doi.org/10.3389/fmars.2018.00328",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "https://doi.org/10.5194/essd-11-1437-2019",
"mediaType": "placeholder/value",
"description": "journal article",
"downloadURL": "https://doi.org/10.5194/essd-11-1437-2019",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/ndp_106/ndp106.html",
"accessURL": "https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/ndp_106/ndp106.html",
"description": "related resource",
"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:0222470 |
| issued | 2020-11-30T00:00:00.000+00:00 |
| keyword |
[
"0222470",
"DEPTH - OBSERVATION",
"DISSOLVED OXYGEN",
"LATITUDE",
"LONGITUDE",
"NITRATE",
"phosphate",
"silicate",
"total alkalinity",
"nutrient autoanalyzer",
"oxygen sensor",
"titrator",
"chemical",
"discrete sample",
"physical",
"profile",
"VARIOUS CHARTERED VESSELS",
"Instituto de Investigacións Mariñas de Vigo",
"Instituto de Investigacións Mariñas de Vigo",
"GLOBAL OCEAN DATA ANALYSIS PROJECT (GLODAP)",
"Indian Ocean",
"North Atlantic Ocean",
"North Pacific Ocean",
"South Atlantic Ocean",
"South Pacific Ocean",
"Southern Ocean",
"oceanography",
"Various",
"GLODAP > Global Ocean Data Analysis Project",
"Ocean Carbon and Acidification Data System (OCADS) Project",
"EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY",
"EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRATE",
"EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > OXYGEN",
"EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PHOSPHATE",
"EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > SILICATE",
"Data synthesis product",
"AT_NNGv2",
"depth",
"latitude",
"longitude",
"nitrate",
"oxygen",
"phosphate",
"silicate",
"AUTOANALYZER > AUTOANALYZER",
"OXYGEN METERS > OXYGEN METERS",
"OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN",
"OCEAN > ATLANTIC OCEAN > SOUTH ATLANTIC OCEAN",
"OCEAN > INDIAN OCEAN",
"OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN",
"OCEAN > PACIFIC OCEAN > SOUTH PACIFIC OCEAN",
"OCEAN > SOUTHERN OCEAN",
"Arctic Ocean",
"Atlantic Ocean",
"Indian Ocean",
"Pacific Ocean",
"Southern Ocean"
]
|
| landingPage | https://www.ncei.noaa.gov/contact |
| language |
[]
|
| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 2020-12-01T00:00:00.000+00:00 |
| publisher |
{
"name": "NOAA National Centers for Environmental Information",
"@type": "org:Organization"
}
|
| references |
[
"https://doi.org/10.5194/essd-11-1109-2019",
"https://doi.org/10.3389/fmars.2018.00328",
"https://doi.org/10.5194/essd-11-1437-2019",
"https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/ndp_106/ndp106.html",
"https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system"
]
|
| rights | otherRestrictions |
| spatial | 179.5,-77.5,-179.5,89.5 |
| temporal | 1957-01-01T00:00:00+00:00/2018-12-31T00:00:00+00:00 |
| title | A global monthly climatology of total alkalinity (AT): a neural network approach (NCEI Accession 0222470) |
