This dataset is lidar point cloud 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 sq miles total. Each LAS file contains LiDAR point information, which has been calibrated, controlled, and classified. At the time of capture ground conditions were leaf-off, snow free, and water was at normal levels.
The 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.
This metadata record supports the data entry in the NOAA Digital Coast Data Access Viewer (DAV).
The NOAA Office for Coastal Management (OCM) downloaded las point data files from the PASDA (Pennsylvania Spatial Data Access) site.
The 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 lidar point data, the bare earth Digital Elevation Models (DEM) created from the lidar point data are also available. These data are available for custom download at the link provided in the URL section of this metadata record.
This data set is an LAZ (compressed LAS) format file containing LIDAR point cloud data.