Chlorophyll-a Long-term Mean, 1998-2018 - American Samoa
Chlorophyll-a, is a widely used proxy for phytoplankton biomass and an indicator for changes in phytoplankton production. As an essential source of energy in the marine environment, the extent and availability of phytoplankton biomass can be highly influential for fisheries production and dictate trophic structure in marine ecosystems. Changes in phytoplankton biomass are predominantly effected by changes in nutrient availability, through either natural (e.g., turbulent ocean mixing) or anthropogenic (e.g., agricultural runoff) processes. This layer represents the mean of the 8-day time series of chlorophyll-a (mg/m3) from 1998-2018.
Data products generated by the Ocean Colour component of the European Space Agency (ESA) Climate Change Initiative (CCI) project. These files are 8-day 4-km composites of merged sensor products: Global Area Coverage (GAC), Local Area Coverage (LAC), MEdium Resolution Imaging Spectrometer (MERIS), Moderate Resolution Imaging Spectroradiometer (MODIS) Aqua, Ocean and Land Colour Instrument (OLCI), Sea-viewing Wide Field-of-view Sensor (SeaWiFS), and Visible Infrared Imaging Radiometer Suite (VIIRS).
The long-term mean was calculated by taking the average of all 8-day data from 1998-2018 for each pixel. A quality control mask was applied to remove spurious data associated with shallow water, following Gove et al., 2013. Nearshore map pixels with no data were filled with values from the nearest neighboring valid offshore pixel by using a grid of points and the Near Analysis tool in ArcGIS then converting points to raster.
Data source: https://oceanwatch.pifsc.noaa.gov/erddap/griddap/esa-cci-chla-8d-v5-0.graph
Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| contactPoint |
{
"fn": "NOAA Pacific Islands Fisheries Science Center (PIFSC)",
"@type": "vcard:Contact",
"hasEmail": "mailto:pifsc.info@noaa.gov"
}
|
| describedByType | application/octet-steam |
| description | Chlorophyll-a, is a widely used proxy for phytoplankton biomass and an indicator for changes in phytoplankton production. As an essential source of energy in the marine environment, the extent and availability of phytoplankton biomass can be highly influential for fisheries production and dictate trophic structure in marine ecosystems. Changes in phytoplankton biomass are predominantly effected by changes in nutrient availability, through either natural (e.g., turbulent ocean mixing) or anthropogenic (e.g., agricultural runoff) processes. This layer represents the mean of the 8-day time series of chlorophyll-a (mg/m3) from 1998-2018. Data products generated by the Ocean Colour component of the European Space Agency (ESA) Climate Change Initiative (CCI) project. These files are 8-day 4-km composites of merged sensor products: Global Area Coverage (GAC), Local Area Coverage (LAC), MEdium Resolution Imaging Spectrometer (MERIS), Moderate Resolution Imaging Spectroradiometer (MODIS) Aqua, Ocean and Land Colour Instrument (OLCI), Sea-viewing Wide Field-of-view Sensor (SeaWiFS), and Visible Infrared Imaging Radiometer Suite (VIIRS). The long-term mean was calculated by taking the average of all 8-day data from 1998-2018 for each pixel. A quality control mask was applied to remove spurious data associated with shallow water, following Gove et al., 2013. Nearshore map pixels with no data were filled with values from the nearest neighboring valid offshore pixel by using a grid of points and the Near Analysis tool in ArcGIS then converting points to raster. Data source: https://oceanwatch.pifsc.noaa.gov/erddap/griddap/esa-cci-chla-8d-v5-0.graph |
| distribution |
[
{
"@type": "dcat:Distribution",
"title": "GeoServer",
"mediaType": "placeholder/value",
"description": "This URL provides access to this dataset via GeoServer, including multiple output formats and an OpenLayers viewer.",
"downloadURL": "https://geo.pacioos.hawaii.edu/geoserver/",
"describedByType": "application/octet-steam"
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{
"@type": "dcat:Distribution",
"title": "PacIOOS: American Samoa Coral Reef Drivers",
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"description": "This URL provides a viewer and/or data access for this dataset.",
"downloadURL": "http://pacioos.org/projects/coral-drivers-amsam/",
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|
| identifier | as_noaa_all_chlor_avg |
| isPartOf | Pacific Islands Ocean Observing System (PacIOOS) |
| issued | 2021-09-07T00:00:00.000+00:00 |
| keyword |
[
"Earth Science > Biosphere > Aquatic Ecosystems > Reef Habitat",
"Earth Science > Biosphere > Ecosystems > Marine Ecosystems > Reef > Coral Reef",
"Earth Science > Human Dimensions > Human Settlements > Coastal Areas",
"Earth Science > Oceans > Coastal Processes > Coral Reefs",
"Earth Science > Oceans > Ocean Chemistry > Chlorophyll",
"Earth Science > Oceans > Ocean Optics > Ocean Color",
"Ocean > Pacific Ocean > South Pacific Ocean > Polynesia > American Samoa > Manua",
"Ocean > Pacific Ocean > South Pacific Ocean > Polynesia > American Samoa > Ofu",
"Ocean > Pacific Ocean > South Pacific Ocean > Polynesia > American Samoa > Olosega",
"Ocean > Pacific Ocean > South Pacific Ocean > Polynesia > American Samoa > Rose Atoll",
"Ocean > Pacific Ocean > South Pacific Ocean > Polynesia > American Samoa > Swains",
"Ocean > Pacific Ocean > South Pacific Ocean > Polynesia > American Samoa > Tau",
"Ocean > Pacific Ocean > South Pacific Ocean > Polynesia > American Samoa > Tutuila",
"PacIOOS > Pacific Islands Ocean Observing System",
"PacIOOS > Pacific Islands Ocean Observing System"
]
|
| landingPage | https://www.fisheries.noaa.gov/about/pacific-islands-fisheries-science-center |
| language |
[]
|
| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 2021-09-07T00:00:00.000+00:00 |
| publisher |
{
"name": "Pacific Islands Ocean Observing System (PacIOOS)",
"@type": "org:Organization"
}
|
| spatial | -167.8250200967191,-14.732036252835169,-171.33852794082935,-10.776491753888738 |
| title | Chlorophyll-a Long-term Mean, 1998-2018 - American Samoa |
