netcdf frf/projects/WaveShape/lidarWaveScans/FRF-ocean_WaveShape_VelodyneLidar_Crab20171025_1311_wave_98.nc {
  dimensions:
    station_name_length = 16;
    time = UNLIMITED;   // (1 currently)
    numberPoints = 18064;
    numberFrames = 194;
  variables:
    char station_name(station_name_length=16);
      :long_name = "station name";
      :cf_role = "timeseries_id";
      :short_name = "station_name";
      :units = ;
      :_ChunkSizes = 16U; // uint

    double lidarX;
      :_FillValue = -999.99; // double
      :units = "m";
      :long_name = "Lidar FRF X-coordinate";
      :description = "X-coordinate (cross-shore) of the lidar scanner center at the start of the 30-minute collection period in FRF coordinate system. Y-coordinate (alongshore) for the center of the lidar scanner is found in lidarY.  The lidar was mounted on the Coastal Research Amphibious Buggy (CRAB) which was stationed in the surf zone.\n";
      :short_name = "lidarX";

    double lidarY;
      :description = "Y-coordinate (alongshore) of the lidar scanner center at the start of the 30-minute collection period in FRF coordinate system. X-coordinate (cross-shore) for the center of the lidar scanner is found in lidarX.  The lidar was mounted on the Coastal Research Amphibious Buggy (CRAB) which was stationed in the surf zone.\n";
      :_FillValue = -999.99; // double
      :units = "m";
      :long_name = "Lidar FRF Y-coordinate";
      :short_name = "lidarY";

    double lidarZ;
      :_FillValue = -999.99; // double
      :units = "m";
      :long_name = "Lidar FRF Z-coordinate";
      :description = "Z-coordinate (elevation) of the lidar scanner center at the start of the 30-minute collection period in FRF coordinate system. X-coordinate (cross-shore) for the center of the lidar scanner is found in lidarX. Y-coordinate (alongshore) for the center of the lidar scanner is found in lidarY. The lidar was mounted on the Coastal Research Amphibious Buggy (CRAB) which was stationed in the surf zone.\n";
      :short_name = "lidarZ";

    double time(time=1);
      :_FillValue = -999.99; // double
      :units = "seconds since 1970-01-01 00:00:00";
      :standard_name = "time";
      :long_name = "UTC Sample Time";
      :calendar = "gregorian";
      :description = "Wave time stamp. Time is the average time of all lidar returns during the given wave.\n";
      :short_name = "time";
      :_ChunkSizes = 512U; // uint

    double numberPoints(numberPoints=18064);
      :_FillValue = -999.99; // double
      :units = ;
      :standard_name = "numberPoints";
      :long_name = "Number of points in frame";
      :description = "Maximum number of points per frame. The number of points varies per frame, so nans are added to the end of the data vectors for each frame until length is equal to the frame with the largest number of points.\n";
      :short_name = "numberPoints";
      :_ChunkSizes = 18064U; // uint

    double numberFrames(numberFrames=194);
      :_FillValue = -999.99; // double
      :units = ;
      :long_name = "Number of frames in each wave";
      :description = "Number of frames in each wave. Frames are collected at 10Hz.\n";
      :short_name = "numberFrames";
      :_ChunkSizes = 194U; // uint

    double timePoints(time=1, numberFrames=194, numberPoints=18064);
      :_FillValue = -999.99; // double
      :units = "seconds since 1970-01-01 00:00:00";
      :long_name = "Timestamp for each Point";
      :calendar = "gregorian";
      :description = "Time stamp for each lidar return. Each column includes all points collected in a single frame.  Number of columns equals number of frames collected in the given wave. Frames are collected at 10Hz.\n";
      :short_name = "timePoints";
      :_ChunkSizes = 1U, 65U, 6022U; // uint

    double xFRF(time=1, numberFrames=194, numberPoints=18064);
      :_FillValue = -999.99; // double
      :units = "m";
      :long_name = "Cross-Shore Location";
      :description = "Cross-shore location of each lidar return in FRF X-coordinates. Each column includes all points collected in a single frame.  Number of columns equals number of frames collected in the given wave. Frames are collected at 10Hz.\n";
      :short_name = "Cross Shore";
      :_ChunkSizes = 1U, 65U, 6022U; // uint

    double yFRF(time=1, numberFrames=194, numberPoints=18064);
      :_FillValue = -999.99; // double
      :units = "m";
      :long_name = "Local FRF Along-Shore Coordinate Vector";
      :description = "Alongshoreshore location of each lidar return in FRF Y-coordinates. Each column includes all points collected in a single frame.  Number of columns equals number of frames collected in the given wave. Frames are collected at 10Hz.\n";
      :short_name = "Along Shore";
      :_ChunkSizes = 1U, 65U, 6022U; // uint

    double elevation(time=1, numberFrames=194, numberPoints=18064);
      :_FillValue = -999.99; // double
      :units = "m";
      :long_name = "Elevation Vector";
      :description = "Elevation of each lidar return in NAVD88. Each column includes all points collected in a single frame.  Number of columns equals number of frames collected in the given wave. Frames are collected at 10Hz. Mean water surface elevation for each scan is set to the measured water level at the end of the FRF pier. ";
      :short_name = "Elevation";
      :_ChunkSizes = 1U, 65U, 6022U; // uint

  // global attributes:
  :title = "Wave Shape Files";
  :name = "Velodyne HDL-32E Scans of Water Surface";
  :summary = "3-dimensional scans of the water surface collected at 10 Hz using a Velodyne HDL-32E terrestrial laser scanner mounted on the Coastal Research Amphibious Buggy (CRAB) at the United States Armp Corps of Engineers\' Coastal And Hydraulics Laboratory\'s Field Research Facility (USACE/CHL/FRF) in Duck, NC in Sept-Oct 2017.";
  :description = "Lidar Scans of Water Surface at 10 Hz";
  :comment = "Mean water level for each wave is set to water level measured at the end of the FRF pier. Lidar point density and scan extent are a function of water surface roughness, foam, and sediment concentration";
  :history = "Measured, rectified, and processed at USACE/CHL/FRF.";
  :source = "Velodyne HDL_32E terrestrial laser scanner observations from the CRAB stationed in the surf zone at USACE/CHL/FRF.";
  :sourceUrl = "(local files)";
  :standard_name_vocabulary = "CFv25";
  :Metadata_Conventions = "Unidata Dataset Discovery v1.0, CF-1.6";
  :Conventions = "CF-1.6";
  :creator_name = "USACE/CHL/FRF";
  :creator_url = "http://www.frf.usace.army.mil/";
  :creator_email = "frfwebmaster@usace.army.mil";
  :license = "These data may be redistributed and used without restriction. Data are intended for scholarly use by the research community, with the express agreement that users will properly acknowledge the USACE Field Research Facility and the supporting investigator(s). Use or reproduction of these data for commercial purposes is prohibited without prior written permission.";
  :keywords_vocabulary = "Global Change Master Directory (GCMD) Earth Science Keywords; CF Standard Name Table (v23, 23 March 2013)";
  :keywords = "CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > NORTH CAROLINA, EARTH SCIENCE > OCEANS > COASTAL PROCESSES,  EARTH SCIENCE > OCEANS > OCEAN WAVES, Earth Remote Sensing Instruments > Active Remote Sensing > Altimeters > Lidar/Laser Altimeters DOD > DOD/USARMY/USACE/CHL/FRF > Field Research Facility, Coastal And Hydraulics Laboratory, U. S. Army Corps Of Engineers, U.S. Army, U. S. Department Of Defense,\n Lidar Data\n";
  :processing = "post processing";
  :organization = "USACE/CHL/FRF";
  :publisher_url = "http://www.frf.usace.army.mil";
  :infoUrl = "http://chlthredds.erdc.dren.mil/thredds/catalog/frf/catalog.html";
  :publisher_email = "frfwebmaster@usace.army.mil";
  :publisher_name = "USACE/CHL/FRF";
  :format_version = "v1.0";
  :institution = "U.S. Army Corps Of Engineers, Coastal And Hydraulics Laboratory,  Field Research Facility (USACE/CHL/FRF)";
  :contact = "USACE/CHL/FRF";
  :contact_info = "USACE/CHL/FRF";
  :contact_role = "owner";
  :contributor_name = "USACE/CHL/FRF";
  :contributor_role = "USACE/CHL/FRF";
  :naming_authority = "FRF";
  :origin = "USACE/CHL/FRF";
  :acknowledgement = "Data are provided by the US Army Engineer Research & Development Center, Coastal and Hydrualics Laboratory\'s Field Research Facility in Duck, NC.";
  :project = "U.S. Army ERDC Military Engineering Basic Research Program";
  :processing_level = "L1";
  :geospatial_vertical_units = "m";
  :geospatial_vertical_resolution = 0.01; // double
  :geospatial_vertical_min = -5.0; // double
  :geospatial_vertical_max = 5.0; // double
  :geospatial_vertical_origin = "NAVD88 (geoid12b)";
  :geospatial_lat_min = 36.18628; // double
  :geospatial_lat_max = 36.18628; // double
  :geospatial_lat_units = "degrees_north";
  :geospatial_lon_min = -75.74985; // double
  :geospatial_lon_max = -75.74985; // double
  :geospatial_lon_units = "degrees_east";
  :geospatial_vertical_positive = "up";
  :platform = "Coastal Research Amphibious Buggy";
  :instrument = "Veloyne HDL-32E terrestrial laser scanner";
  :vertical_datum = "NAVD88 (geoid12b)";
  :horizontal_datum = "FRF coordinates (rotated from NAD83(2011), North Carolina State Plane, meters(3200) using origin [901951.6805 E, 274093.1562 N] and rotation angle 69.9747)";
  :date_created = "2021-04-05";
  :date_issued = "2021-04-05";
  :time_coverage_start = "25-Oct-2017 13:11:00";
  :time_coverage_end = "25-Oct-2017 13:43:00";
  :deployment_start = "25-Oct-2017 13:11:00";
  :deployment_end = "25-Oct-2017 13:43:00";
}