Chlorophyll-a Average Annual Maximum Anomaly, 2002-2013 - Hawaii

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 annual average of the maximum anomaly of chlorophyll-a (mg/m3) from 2002-2013. Monthly and 8-day 4-km (0.0417-degree) spatial resolution data were obtained from the MODIS (Moderate-resolution Imaging Spectroradiometer) Aqua satellite instrument from the NASA OceanColor website (http://oceancolor.gsfc.nasa.gov). 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 2002-2013 for each pixel. A quality control mask was applied to remove spurious data associated with shallow water, following Gove et al., 2013. Monthly Climatologies were calculated from monthly time series using only full years over the Ocean Tipping Points (OTP) project time frame of interest (2002-2013). 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.

Resources

Name Format Description Link
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/hi_otp_all_chlor_anom_max/ows?service=WMS&version=1.3.0&request=GetCapabilities
0 http://oceantippingpoints.org/about-us/people#Carrie
0 http://oceantippingpoints.org/about-us/people#Kim
0 http://oceantippingpoints.org
0 http://pacioos.org
0 http://oceantippingpoints.org/about-us/people#Carrie
0 http://oceantippingpoints.org/about-us/people#Carrie
0 http://pacioos.org
0 http://pacioos.org
0 http://oceantippingpoints.org
0 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/oceantippingpoints/#data
0 http://oceantippingpoints.org/about-us/people#Carrie
0 http://oceantippingpoints.org/about-us/people#Kim
27 http://oceantippingpoints.org
27 http://pacioos.org
0 http://oceantippingpoints.org/about-us/people#Carrie
0 http://oceantippingpoints.org/about-us/people#Carrie
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. https://geo.pacioos.hawaii.edu/geoserver/PACIOOS/hi_otp_all_chlor_anom_max/ows?service=WCS&version=1.0.0&request=GetCapabilities
0 http://oceantippingpoints.org/about-us/people#Carrie
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. https://geo.pacioos.hawaii.edu/geoserver/PACIOOS/hi_otp_all_chlor_anom_max/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
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/hi_otp_all_chlor_anom_max/ows?service=WCS&version=1.0.0&request=GetCapabilities
0 http://oceantippingpoints.org/about-us/people#Carrie
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 http://oceantippingpoints.org/about-us/people#Carrie
0 http://oceantippingpoints.org/about-us/people#Kim
27 http://oceantippingpoints.org
27 http://pacioos.org
0 http://oceantippingpoints.org/about-us/people#Carrie
0 http://oceantippingpoints.org/about-us/people#Carrie
27 http://pacioos.org
0 http://oceantippingpoints.org/about-us/people#Carrie
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. https://geo.pacioos.hawaii.edu/geoserver/PACIOOS/hi_otp_all_chlor_anom_max/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/hi_otp_all_chlor_anom_max/ows?service=WMS&version=1.3.0&request=GetCapabilities
0 This URL provides a viewer and/or data access for this dataset. http://pacioos.org/projects/oceantippingpoints/#data

Tags

  • human dimensions
  • united states of america
  • coral reef
  • ocean chemistry
  • ecosystems
  • human settlements
  • biosphere
  • oceans
  • pacioos
  • continent
  • coastal areas
  • hawaii
  • chlorophyll
  • pacific islands ocean observing system
  • marine ecosystems
  • north america
  • earth science
  • aquatic ecosystems
  • ocean optics
  • ocean
  • hawaiian islands
  • ocean color
  • central pacific ocean
  • reef habitat
  • coastal processes
  • reef
  • coral reefs
  • pacific ocean

Topics

Categories