Chlorophyll-a Average Annual Maximum Anomaly, 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 annual average of the maximum anomaly 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 chlorophyll-a average annual maximum anomaly was calculated by taking the average of the chlorophyll-a values from the 8-day time series in exceedance of the maximum monthly climatological chlorophyll-a 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. Time series of anomalies were calculated by quantifying the number and magnitude of events from the 8-day time series that exceed the maximum climatological monthly mean. 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
Data and Resources
-
OGC-WCS
WCS
Open Geospatial Consortium Web Coverage Service (WCS). Supported WCS versions...
-
OGC-WMS
WMS
Open Geospatial Consortium Web Map Service (WMS). Supported WMS versions...
-
GeoServer
This URL provides access to this dataset via GeoServer, including multiple...
-
GeoExplorer
This URL provides a viewer for this dataset.
-
PacIOOS: American Samoa Coral Reef Drivers
This URL provides a viewer and/or data access for this dataset.
-
Unnamed resource
-
Unnamed resource
-
Unnamed resource
-
Unnamed resource
-
OGC-WMS-C
WMS
Open Geospatial Consortium Web Map Service - Cached (WMS-C). Use of WMS-C is...
-
ISO-19139 (Local) Metadata
The XML content as stored locally by CKAN
-
ISO-19139 (IOOS Registry)
The XML content as published by the IOOS Registry
Graphic Preview
Metadata Date
Metadata Tags
Online Access |
OGC:WCS (OGC Web Coverage Service) These data are available for access with an OGC WCS compatible client OGC:WMS (OGC Web Map Service) These data are available for access with an OGC WMS compatible client
|
Distributor | NOAA Pacific Islands Fisheries Science Center (PIFSC) |
Point of Contact |
NOAA Pacific Islands Fisheries Science Center (PIFSC) pifsc.info@noaa.gov Online Resource |
Originator |
NOAA Pacific Islands Fisheries Science Center (PIFSC) pifsc.info@noaa.gov Online Resource |
Originator |
NOAA Coral Reef Conservation Program (CRCP) coralreef@noaa.gov Online Resource |
Resource Provider |
European Space Agency (ESA) Climate Change Initiative (CCI) climate.office@esa.int Online Resource |
Publisher |
Pacific Islands Ocean Observing System (PacIOOS) info@pacioos.org Online Resource |
Dataset Point of Contact |
Pacific Islands Ocean Observing System (PacIOOS) info@pacioos.org |
General Documentation | |
Associated Documentation |
Pacific Islands Ocean Observing System (PacIOOS)
|
Resource Provider |
European Space Agency (ESA) Climate Change Initiative (CCI) |
Date(s) |
creation:
2021-09-07
issued: 2021-09-07 revision: 2021-09-07 creation: 2021-09-07 issued: 2021-09-07 revision: 2021-09-07 creation: 2021-09-07 issued: 2021-09-07 revision: 2021-09-07 creation: 2021-09-07 issued: 2021-09-07 revision: 2021-09-07 |
Purpose | These layers were developed as part of a geospatial database of key anthropogenic and environmental pressures to coastal waters of American Samoa. |
Use Limitations |
The data may be used and redistributed for free but is not intended for legal use, since it may contain inaccuracies. Neither the data Contributor, University of Hawaii, PacIOOS, NOAA, State of Hawaii nor the United States Government, nor any of their employees or contractors, makes any warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, or assumes any legal liability for the accuracy, completeness, or usefulness, of this information.
|
Spatial Bounding Box Coordinates | N: -10.776491753888738° S: -14.732036252835169° E: -167.8250200967191° W: -171.33852794082935° |
Theme keywords |
GCMD Science Keywords
|
Data Center keywords |
GCMD Data Center Keywords
|
Place keywords |
GCMD Location Keywords
|
Project keywords |
GCMD Project Keywords
|
Use Constraints |
The data may be used and redistributed for free but is not intended for legal use, since it may contain inaccuracies. Neither the data Contributor, University of Hawaii, PacIOOS, NOAA, State of Hawaii nor the United States Government, nor any of their employees or contractors, makes any warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, or assumes any legal liability for the accuracy, completeness, or usefulness, of this information.
|
Lineage Statement | 2021-09-07T00:00:00Z OGC web services (WMS and WFS) enabled by PacIOOS via GeoServer. Original data from source provider may have been reformatted, reprojected, or adjusted in other ways to optimize these capabilities. |
Platforms | |
---|---|
Ingestion Attributes | |
Instrument Attributes | |
Attribution Information | |
CF related |