Chlorophyll-a Maximum Monthly Climatological Mean, 2002-2013 - Hawaii

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 maximum monthly climatological mean 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).

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), averaging for all same-months (e.g., January). 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 e Risorse

Campo Valore
access_constraints []
bbox-east-long -154.56326617912035
bbox-north-lat 22.42373568629166
bbox-south-lat 18.755036208219373
bbox-west-long -160.41246354980814
contact-email kappel@nceas.ucsb.edu
coupled-resource [{"title": [], "href": ["#DataIdentification"], "uuid": []}, {"title": [], "href": ["#DataIdentification"], "uuid": []}]
dataset-reference-date [{"type": "creation", "value": "2017-03-14"}, {"type": "issued", "value": "2017-03-14"}, {"type": "revision", "value": "2017-03-14"}]
graphic-preview-description Sample image.
graphic-preview-file http://pacioos.org/metadata/browse/hi_otp_all_chlor_clim_max.png
guid hi_otp_all_chlor_clim_max
licence []
lineage 2017-03-14T00:00:00Z 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.
metadata-date 2024-11-14
metadata-language eng
metadata_type geospatial
old-spatial {"type": "Polygon", "coordinates": [[[-160.41246354980814, 18.755036208219373], [-154.56326617912035, 18.755036208219373], [-154.56326617912035, 22.42373568629166], [-160.41246354980814, 22.42373568629166], [-160.41246354980814, 18.755036208219373]]]}
resource-type dataset
responsible-party [{"name": "National Center for Ecological Analysis and Synthesis (NCEAS)", "roles": ["pointOfContact"]}]
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spatial-data-service-type Open Geospatial Consortium Web Coverage Service (WCS)
spatial_harvester true
Gruppi
  • AmeriGEOSS
  • National Provider
  • North America
Tag
  • AmeriGEO
  • AmeriGEOSS
  • CKAN
  • GEO
  • GEOSS
  • National
  • North America
  • United States
  • aquatic ecosystems
  • biosphere
  • central pacific ocean
  • chlorophyll
  • coastal areas
  • coastal processes
  • continent
  • coral reef
  • coral reefs
  • earth science
  • ecosystems
  • hawaii
  • hawaiian islands
  • human dimensions
  • human settlements
  • marine ecosystems
  • north america
  • ocean
  • ocean chemistry
  • ocean color
  • ocean optics
  • oceans
  • pacific islands ocean observing system
  • pacific ocean
  • pacioos
  • reef
  • reef habitat
  • united states of america
isopen False
metadata_created 2025-09-24T10:44:28.006498
metadata_modified 2025-09-24T10:44:28.006506
notes 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 maximum monthly climatological mean 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). 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), averaging for all same-months (e.g., January). 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.
num_resources 13
num_tags 36
title Chlorophyll-a Maximum Monthly Climatological Mean, 2002-2013 - Hawaii