Photosynthetically Active Radiation (PAR) Average Annual Frequency of Anomalies, 2003-2018 - American Samoa

Description

Solar irradiance is one of the most important factors influencing coral reefs. As a majority of their nutrients are obtained from symbiotic photosynthesizing organisms, reef-building corals need sunlight as a fundamental source of energy. Seasonally low irradiance at high latitudes may be linked to reduced growth rates in corals and may limit reef calcification to shallower depths than that observed at lower latitudes. However, high levels of irradiance can lead to light-induced damage, production of free radicals, and in combination with increased temperatures, can exacerbate coral bleaching. Irradiance is here represented by PAR (photosynthetically active radiation), which is the spectrum of light that is important for photosynthesis. This layer represents the annual average number of anomalies of PAR (mol/m2/day) from 2003-2018, with values presented as fraction of a year. Data for PAR for the time period 2003-2018 were obtained from the Moderate Resolution Imaging Spectroradiometer (MODIS) Aqua satellite instrument from the NASA OceanColor website as 8-day 4-km composites. The PAR average annual frequency of anomalies was calculated by taking the average number of weeks that exceeded the maximum monthly climatological PAR value from 2003-2018 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/aqua_par_8d_2018_0.graph

Resources

Name Format Description Link
0 This URL provides a viewer for this dataset. http://geo.pacioos.hawaii.edu/geoexplorer/
0 This URL provides a viewer and/or data access for this dataset. http://pacioos.org/projects/coral-drivers-amsam/
0 https://www.fisheries.noaa.gov/about/pacific-islands-fisheries-science-center
0 This URL provides access to this dataset via GeoServer, including multiple output formats and an OpenLayers viewer. http://geo.pacioos.hawaii.edu/geoserver/
0 https://coralreef.noaa.gov
0 https://oceancolor.gsfc.nasa.gov
27 http://pacioos.org
0 https://www.fisheries.noaa.gov/about/pacific-islands-fisheries-science-center
0 https://www.fisheries.noaa.gov/about/pacific-islands-fisheries-science-center
27 http://pacioos.org
50 Open Geospatial Consortium Web Coverage Service (WCS). Supported WCS versions include 1.0.0, 1.1.0, and 1.1.1. Supported output formats include GeoTIFF, GIF, JPEG, PNG, or TIFF. http://geo.pacioos.hawaii.edu/geoserver/PACIOOS/as_noaa_all_par_anom_freq/ows?service=WCS&version=1.0.0&request=GetCapabilities
0 https://www.fisheries.noaa.gov/about/pacific-islands-fisheries-science-center
27 http://pacioos.org
0 https://www.fisheries.noaa.gov/about/pacific-islands-fisheries-science-center
27 http://pacioos.org
0 This URL provides access to this dataset via GeoServer, including multiple output formats and an OpenLayers viewer. https://geo.pacioos.hawaii.edu/geoserver/
0 This URL provides a viewer and/or data access for this dataset. http://pacioos.org/projects/coral-drivers-amsam/
0 https://coralreef.noaa.gov
0 https://oceancolor.gsfc.nasa.gov
27 http://pacioos.org
0 https://www.fisheries.noaa.gov/about/pacific-islands-fisheries-science-center
27 http://pacioos.org
0 https://www.fisheries.noaa.gov/about/pacific-islands-fisheries-science-center
27 http://pacioos.org
52 Open Geospatial Consortium Web Map Service (WMS). Supported WMS versions include 1.1.1 and 1.3.0. Supported map formats include AtomPub, GeoRSS, GeoTIFF, GIF, JPEG, KML/KMZ, PDF, PNG, SVG, and TIFF. Supported info formats include GeoJSON, GeoJSON-P, GML, HTML, and plain text. http://geo.pacioos.hawaii.edu/geoserver/PACIOOS/as_noaa_all_par_anom_freq/ows?service=WMS&version=1.3.0&request=GetCapabilities
52 Open Geospatial Consortium Web Map Service - Cached (WMS-C). Use of WMS-C is similar to traditional WMS but with the addition of the "tiled=true" parameter, which triggers GeoServer to pull map tiles from GeoWebCache if they have been previously generated. This can dramatically improve performance, especially for larger datasets. Supported map formats include JPEG and PNG. Supported info formats include GeoJSON, GML, HTML, and plain text. http://geo.pacioos.hawaii.edu/geoserver/PACIOOS/gwc/service/wms?service=WMS&version=1.1.1&request=GetCapabilities&tiled=true
0 https://www.fisheries.noaa.gov/about/pacific-islands-fisheries-science-center
50 Open Geospatial Consortium Web Coverage Service (WCS). Supported WCS versions include 1.0.0, 1.1.0, and 1.1.1. Supported output formats include GeoTIFF, GIF, JPEG, PNG, or TIFF. https://geo.pacioos.hawaii.edu/geoserver/PACIOOS/as_noaa_all_par_anom_freq/ows?service=WCS&version=1.0.0&request=GetCapabilities
52 Open Geospatial Consortium Web Map Service (WMS). Supported WMS versions include 1.1.1 and 1.3.0. Supported map formats include AtomPub, GeoRSS, GeoTIFF, GIF, JPEG, KML/KMZ, PDF, PNG, SVG, and TIFF. Supported info formats include GeoJSON, GeoJSON-P, GML, HTML, and plain text. https://geo.pacioos.hawaii.edu/geoserver/PACIOOS/as_noaa_all_par_anom_freq/ows?service=WMS&version=1.3.0&request=GetCapabilities
0 https://www.fisheries.noaa.gov/about/pacific-islands-fisheries-science-center

Tags

  • human dimensions
  • swains
  • manua
  • coral reef
  • ecosystems
  • human settlements
  • biosphere
  • oceans
  • pacioos
  • american samoa
  • tutuila
  • coastal areas
  • pacific islands ocean observing system
  • marine ecosystems
  • rose atoll
  • olosega
  • earth science
  • aquatic ecosystems
  • ocean optics
  • ofu
  • ocean
  • vegetation
  • polynesia
  • photosynthetically active radiation
  • reef habitat
  • coastal processes
  • reef
  • coral reefs
  • pacific ocean
  • tau
  • south pacific ocean

Topics

Categories