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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, Lidar Data 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 geospatial_vertical_min: -5.0 geospatial_vertical_max: 5.0 geospatial_vertical_origin: NAVD88 (geoid12b) geospatial_lat_min: 36.18628 geospatial_lat_max: 36.18628 geospatial_lat_units: degrees_north geospatial_lon_min: -75.74985 geospatial_lon_max: -75.74985 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 Unlimited_Dimension: time

Variables:	station_name: String station_name long_name: station name cf_role: timeseries_id short_name: station_name units: _ChunkSizes: 16 DODS: strlen: 16 dimName: station_name_length
	lidarX: 64 bit Real lidarX _FillValue: -999.99 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. short_name: lidarX
	lidarY: 64 bit Real 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. _FillValue: -999.99 units: m long_name: Lidar FRF Y-coordinate short_name: lidarY
	lidarZ: 64 bit Real lidarZ _FillValue: -999.99 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. short_name: lidarZ
	time: Array of 64 bit Reals [time = 0..0] time: _FillValue: -999.99 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. short_name: time _ChunkSizes: 512
	numberPoints: Array of 64 bit Reals [numberPoints = 0..18063] numberPoints: _FillValue: -999.99 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. short_name: numberPoints _ChunkSizes: 18064
	numberFrames: Array of 64 bit Reals [numberFrames = 0..193] numberFrames: _FillValue: -999.99 units: long_name: Number of frames in each wave description: Number of frames in each wave. Frames are collected at 10Hz. short_name: numberFrames _ChunkSizes: 194
	timePoints: Grid time: numberFrames: numberPoints: _FillValue: -999.99 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. short_name: timePoints _ChunkSizes: 1, 65, 6022
	xFRF: Grid time: numberFrames: numberPoints: _FillValue: -999.99 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. short_name: Cross Shore _ChunkSizes: 1, 65, 6022
	yFRF: Grid time: numberFrames: numberPoints: _FillValue: -999.99 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. short_name: Along Shore _ChunkSizes: 1, 65, 6022
	elevation: Grid time: numberFrames: numberPoints: _FillValue: -999.99 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: 1, 65, 6022

For questions or comments about this dataset, contact the administrator of this server [Spicer Bak] at: Spicer.Bak@usace.army.mil

For questions or comments about the OPeNDAP service bundled with the TDS, email THREDDS support at: support-thredds@unidata.ucar.edu

DDS:

Dataset {
    String station_name;
    Float64 lidarX;
    Float64 lidarY;
    Float64 lidarZ;
    Float64 time[time = 1];
    Float64 numberPoints[numberPoints = 18064];
    Float64 numberFrames[numberFrames = 194];
    Grid {
     ARRAY:
        Float64 timePoints[time = 1][numberFrames = 194][numberPoints = 18064];
     MAPS:
        Float64 time[time = 1];
        Float64 numberFrames[numberFrames = 194];
        Float64 numberPoints[numberPoints = 18064];
    } timePoints;
    Grid {
     ARRAY:
        Float64 xFRF[time = 1][numberFrames = 194][numberPoints = 18064];
     MAPS:
        Float64 time[time = 1];
        Float64 numberFrames[numberFrames = 194];
        Float64 numberPoints[numberPoints = 18064];
    } xFRF;
    Grid {
     ARRAY:
        Float64 yFRF[time = 1][numberFrames = 194][numberPoints = 18064];
     MAPS:
        Float64 time[time = 1];
        Float64 numberFrames[numberFrames = 194];
        Float64 numberPoints[numberPoints = 18064];
    } yFRF;
    Grid {
     ARRAY:
        Float64 elevation[time = 1][numberFrames = 194][numberPoints = 18064];
     MAPS:
        Float64 time[time = 1];
        Float64 numberFrames[numberFrames = 194];
        Float64 numberPoints[numberPoints = 18064];
    } elevation;
} frf/projects/WaveShape/lidarWaveScans/FRF-ocean_WaveShape_VelodyneLidar_Crab20171025_1311_wave_98.nc;

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