{
  "type": "Collection",
  "id": "noaa_imagery_collection_m9849",
  "stac_version": "1.1.0",
  "description": "This dataset is raster digital elevation model (DEM) data covering the City of Philadelphia, PA. The data were collected for the City of Philadelphia in April 2022. DEMs were generated from the raw data. This lidar point cloud data covers approximately 239 square miles total. At the time of capture ground conditions were leaf-off, snow free, and water was at normal levels.\n\nThe lidar mapping requirements and deliverables meet Quality Level One (QL1) standards for final deliverables as outlined in the USGS-NGP Lidar Base Specification 2021, Revision A (https://www.usgs.gov/3DEP/lidarspec).  QL1 lidar specifications suggest a pulse density of greater than or equal to 8 pulses per square meter Aggregate Nominal Pulse Density (ANPD), and pulse spacing of less than or equal to 35 centimeters  Aggregate Nominal Pulse Spacing (ANPS).  Additionally, lidar capture over the city center has increased point density of 16 ppsm.\n\nThis metadata record supports the data entry in the NOAA Digital Coast Data Access Viewer (DAV).\n\nThe NOAA Office for Coastal Management (OCM) downloaded 1 raster DEM file in GeoTiff format from the PASDA (Pennsylvania Spatial Data Access) site.\nThe data were processed to the NOAA Digital Coast Data Access Viewer (DAV) to make the data available for bulk and custom downloads.  In addition to these bare earth Digital Elevation Model (DEM) data, the lidar point data that these DEM data were created from, are also available. These data are available for custom download at the link provided in the URL section of this metadata record.",
  "links": [
    {
      "rel": "item",
      "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/dem/PA_Phil_DEM_2022_9849/stac/Philadelphia_dem_3ft_2022.json",
      "type": "application/geo+json"
    }
  ],
  "title": "2022 City of Philadelphia Lidar DEM: Philadelphia, PA",
  "extent": {
    "spatial": {
      "bbox": [
        [
          -75.337789,
          39.81252,
          -74.939567,
          40.158785
        ]
      ]
    },
    "temporal": {
      "interval": [
        [
          "2022-03-29T00:00:00Z",
          "2022-03-29T00:00:00Z"
        ]
      ]
    }
  },
  "license": "NLPL",
  "providers": [
    {
      "name": "NOAA OCM",
      "description": "NOAA Office for Coastal Management",
      "roles": [
        "host"
      ],
      "url": "https://coast.noaa.gov/"
    }
  ],
  "assets": {
    "metadata": {
      "href": "https://www.fisheries.noaa.gov/inport/item/70174",
      "type": "HTML",
      "title": "Dataset Level Metadata",
      "description": "Metadata record for this dataset.",
      "roles": [
        "metadata"
      ]
    }
  }
}