{
 "culture": "en-US",
 "name": "Chlorophyll_a_concentration",
 "guid": "17E117E8-6071-4320-A18D-68639C60C5C7",
 "catalogPath": "",
 "snippet": "Monthly chlorophyll-a concentration from multiple sensors over two time periods",
 "description": "<DIV STYLE=\"text-align:Left;font-size:12pt\"><P><SPAN>This data product shows the monthly median concentration of the pigment Chlorophyll-a (mg/m³) in surface waters from 2010 to 2019 and 2020 to 2024. Chlorophyll-a concentration is often used as a proxy for phytoplankton abundance. This product was created by the Marine Geospatial Ecology Lab, Duke University using remote sensing data from multiple satellite sensors. These include the Moderate-resolution Imaging Spectro-radiometer (MODIS, onboard NASA's Aqua satellite), the Visible Infrared Imaging Radiometer Suite (VIIRS, onboard the Suomi NPP and NOAA-20 satellites), and the Ocean Colour Climate Change Initiative (OC-CCI) composite product developed by the European Space Agency (ESA). VIIRS provides improved spatial resolution and radiometric sensitivity compared to MODIS, enhancing detection of ocean color features. OC-CCI merges data from several sensors to produce a consistent, long-term climate-quality record of ocean color. This layer covers offshore waters from North Carolina to northern Maine, with a spatial resolution of 1,300 meters. Pixels with no data represent data points either consistently flagged during post-processing or shallower than 10 meters of depth. Pixels on rivers or lakes are also removed.<\/SPAN><\/P><\/DIV>",
 "summary": "Monthly chlorophyll-a concentration from multiple sensors over two time periods",
 "title": "Chlorophyll_a_concentration",
 "tags": [],
 "type": "Map Service",
 "typeKeywords": [
  "Data",
  "Service",
  "Map Service",
  "ArcGIS Server"
 ],
 "thumbnail": "thumbnail/thumbnail.png",
 "url": "",
 "extent": [
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   35
  ],
  [
   -60.9895833333333,
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  ]
 ],
 "minScale": 0,
 "maxScale": 1.7976931348623157E308,
 "spatialReference": "WGS_1984_Web_Mercator_Auxiliary_Sphere",
 "accessInformation": "Marine Geospatial Ecology Lab, Duke University; NASA; NOAA; ESA",
 "licenseInfo": ""
}