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MDAT/Chlorophyll_a_concentration (MapServer)

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Service Description:

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.



Map Name: Chlorophyll-a concentration

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Layers: Description: 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.

Copyright Text: Marine Geospatial Ecology Lab, Duke University; NASA; NOAA; ESA

Spatial Reference: 102100  (3857)


Single Fused Map Cache: false

Initial Extent: Full Extent: Units: esriMeters

Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP

Document Info: Supports Dynamic Layers: true

MaxRecordCount: 2000

MaxImageHeight: 4096

MaxImageWidth: 4096

Supported Query Formats: JSON, geoJSON, PBF

Supports Query Data Elements: true

Min Scale: 0

Max Scale: 0

Supports Datum Transformation: true



Child Resources:   Info   Dynamic Layer

Supported Operations:   Export Map   Identify   QueryDomains   QueryLegends   Find   Return Updates