{
  "accessLevel": "public",
  "bureauCode": [
    "020:00"
  ],
  "contactPoint": {
    "fn": "Blake Schaeffer",
    "hasEmail": "mailto:schaeffer.blake@epa.gov"
  },
  "describedBy": "https://pasteur.epa.gov/uploads/10.23719/1503160/documents/SchaefferBlake_A-hdrr_metadata_20170306.docx",
  "describedByType": "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
  "description": "The dataset provided here contains the added pixel quality assurance (QA) flags that help ensure validity of satellite-derived water quality estimates in freshwater lakes and reservoirs. This work builds upon a study by Urquhart et al. [1] where inland lake and waterbody satellite data was processed and flagged for California, Ohio, and Florida. Added pixel QA flags include land-adjacent pixels, unresolvable waterbody pixels, and snow/ice pixels. Any water pixel adjacent to land is flagged to caution potential for mixed land-water pixels and land adjacency effects. A weekly QA flag mask is provided for snow/ice presence over lakes. The unresolvable QA flag mask contains inland waterbodies smaller than 27 hectares and/or with less than three 300m resolvable satellite pixels.\n\nAn updated version of the Shuttle Radar Topography Mission (SRTM) Waterbody Data (SWBD) is provided to fix a land-waterbody mask error identified in Rhode Island and Massachusetts. The Research Environments MEaSUREs SRTM, used in the NASA data pre-processing, includes the Water Body Data Shapefiles (~30m) product. Version 3.0 of the SRTM contains the vectorized coastline masks used by National Geospatial-Intelligence Agency (NGA) in the editing, called the SRTM Waterbody Data, in shapefile and rasterized formats [4]. Version 4.0 of the SRTM presented here fixes the land-waterbody mask error identified in Rhode Island and Massachusetts. Version 4.0 of the SRTM has been adopted into the NASA pre-processing of the MERIS and OLCI satellite datafiles described above. \n\nThis dataset is associated with the following publication:\nUrquhart, E., and B. Schaeffer. Envisat MERIS and Sentinel-3 OLCI satellite lake biophysical water quality flag dataset for the contiguous United States.   Data in Brief. Elsevier B.V., Amsterdam,  NETHERLANDS, 28: 104826, (2020).",
  "distribution": [
    {
      "downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1503160/DIB.zip",
      "mediaType": "application/x-zip-compressed",
      "title": "DIB.zip"
    }
  ],
  "identifier": "https://doi.org/10.23719/1503160",
  "keyword": [
    "cyanobacteria",
    "ecology",
    "harmful algal bloom",
    "lakes",
    "remote sensing",
    "satellite",
    "water quality"
  ],
  "license": "https://pasteur.epa.gov/license/sciencehub-license.html",
  "modified": "2018-11-05",
  "programCode": [
    "020:096"
  ],
  "publisher": {
    "name": "U.S. EPA Office of Research and Development (ORD)",
    "subOrganizationOf": {
      "name": "U.S. Environmental Protection Agency",
      "subOrganizationOf": {
        "name": "U.S. Government"
      }
    }
  },
  "references": [
    "https://doi.org/10.1016/j.dib.2019.104826"
  ],
  "rights": null,
  "title": "CONUS_extent"
}