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Global Attributes:	title: lidarHydrodynamics name: VZ-1000 Calculated Hydrodynamics Data cdm_data_type: Station featureType: profile summary: Hydrodynamics data at 945 meters in FRF alongshore collected using a Riegl VZ-1000 or VZ-2000 terrestrial laser scanner mounted on the North lidar tower at the United States Armp Corps of Engineers' Coastal And Hydraulics Laboratory's Field Research Facility (USACE/CHL/FRF) in Duck, NC. The Riegl VZ-1000 is the primary data collection instrument, with the VZ-2000 deployed while the VZ-1000 is being serviced. description: Lidar Hydrodynamics Data comment: Lidar point density and accuracy decreases with range. Please check coregQCFlag for a measure of rectification accuracy. history: Measured, rectified, coregistered, and processed at USACE/CHL/FRF. source: VZ-1000 or VZ-2000 terrestrial laser scanner observations from the North lidar tower 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 > COASTAL PROCESSES > BEACHES, EARTH SCIENCE > OCEANS > COASTAL PROCESSES > INTERTIDAL ZONE, EARTH SCIENCE > OCEANS > COASTAL PROCESSES > SHORELINES, 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: realtime 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 date_created: 2025-05-31 date_issued: 2025-05-31 acknowledgement: Data are provided by the US Army Engineer Research & Development Center, Coastal and Hydrualics Laboratory's Field Research Facility in Duck, NC. project: USACE Coastal Field Data Collection Program id: 947.0 processing_level: L1 geospatial_vertical_units: m geospatial_vertical_resolution: 0.01 geospatial_vertical_min: -5.0 geospatial_vertical_max: 10.0 geospatial_vertical_origin: NAVD88 (geoid12b) geospatial_lat_min: 36.18580624482151 geospatial_lat_max: 36.186279097846175 geospatial_lat_units: degrees_north geospatial_lon_min: -75.7506222472687 geospatial_lon_max: -75.75253684396512 geospatial_lon_units: degrees_east geospatial_vertical_positive: up time_coverage_start: 1970-01-09T13:28:58 time_coverage_end: 1970-01-09T13:29:28 deployment_start: 2015-01-15T15:20:00Z platform: North lidar tower instrument: Riegl VZ-1000 or VZ-2000 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) depth: 0.0

Variables:	station_name: String station_name units: long_name: station name cf_role: timeseries_id short_name: station_name DODS: strlen: 18 dimName: station_name_length
	lidarLatitude: 64 bit Real lidarLatitude _FillValue: -999.99 units: degrees_north standard_name: latitude long_name: Lidar Latitude description: 'Latitude in degrees north for the center of the lidar scanner. Longitude for the center of the lidar scanner is found in lidarLongitude. All hydrodynamic data and statistics are provided at fixed cross-shore locations along the cross-shore transect defined in [xFRF, yFRF]. Location of lidar scanner in FRF coordinates are located in lidarX and lidarY.' short_name: lidarLat
	lidarLongitude: 64 bit Real lidarLongitude _FillValue: -999.99 units: degrees_east standard_name: longitude long_name: Lidar Longitude description: 'Longitude in degrees east for the center of the lidar scanner. Latitude for the center of the lidar scanner is found in lidarLatitude. All hydrodynamic data and statistics are provided at fixed cross-shore locations along the cross-shore transect defined in [xFRF, yFRF]. Location of lidar scanner in FRF coordinates are located in lidarX and lidarY.' short_name: lidarLon
	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 in FRF coordinate system. Y-coordinate (alongshore) for the center of the lidar scanner is found in lidarY. All hydrodynamic data and statistics are provided at fixed cross-shore locations along the cross-shore transect defined in [xFRF, yFRF]. Location of lidar scanner in latitude, longitude are located in Latitude, Longitude. See Global Attributes for specifications of FRF coordinate system.' short_name: lidarX
	lidarY: 64 bit Real lidarY _FillValue: -999.99 units: m long_name: Lidar FRF Y-coordinate description: 'Y-coordinate (alongshore) of the lidar scanner center in FRF coordinate system. X-coordinate (cross-shore) for the center of the lidar scanner is found in lidarX. All hydrodynamic data and statistics are provided at fixed cross-shore locations along the cross-shore transect defined in [xFRF, yFRF]. Location of lidar scanner in latitude, longitude are located in Latitude, Longitude. See Global Attributes for specifications of FRF coordinate system.' short_name: lidarY
	xFRF: Array of 64 bit Reals [xFRF = 0..1550] xFRF: _FillValue: -999.99 units: m long_name: Local FRF Cross-Shore Coordinate description: '1D array of FRF X-coordinates (cross-shore) of locations along a cross-shore transect where hydrodynamic data and statistics are provided. Each FRF X-coordinate's corresponding FRF Y-coordinate is found at the same index in yFRF. For each xFRF, yFRF pairing, hydrodynamic data and statistics are found at the same index in the appropriately named 1D variable.' short_name: Cross Shore
	yFRF: Array of 64 bit Reals [xFRF = 0..1550] xFRF: units: m long_name: Local FRF Along-Shore Coordinate description: '1D array of FRF Y-coordinates (alongshore) of locations along a cross-shore transect where hydrodynamic data are provided. Each FRF Y-coordinate's corresponding FRF X-coordinate is found at the same index in xFRF. For each xFRF, yFRF pairing, hydrodynamic data and statistics are found at the same index in the appropriately named 1D variable.' short_name: Along Shore _FillValue: -999.99
	waveFrequency: Array of 64 bit Reals [waveFrequency = 0..47] waveFrequency: _FillValue: -999.99 units: Hz standard_name: wave_frequency long_name: Spectral Band Center Frequency description: '1D array listing the center of wave frequency bands from the Fourier analyses of the water surface elevation time series. Wave energy density spectra were computed from the water surface elevation time series at each fixed cross-shore location along the cross-shore transect defined in [xFRF, yFRF]. The measured wave energies are grouped into frequency bins indexed in this array.' short_name: Frequency
	time: Array of 64 bit Reals [time = 0..63297] time: _FillValue: -999.99 units: seconds since 1970-01-01 00:00:00 standard_name: time long_name: UTC Sample Time calendar: gregorian description: 'Hourly time stamp associated with hydrodynamic data and statistics.' short_name: time _ChunkSizes: 512
	waterLevel: Grid time: xFRF: _FillValue: -999.99 units: m standard_name: water_surface_height_above_reference_datum long_name: Water Level Height description: '1D array of mean sea surface elevations at each fixed cross-shore location along the cross-shore transect defined in [xFRF, yFRF]. Each sample point's location in FRF coordinates is found at the same index in xFRF and yFRF.' short_name: Water Level _ChunkSizes: 1, 1551
	minWaterLevel: Grid time: xFRF: units: m long_name: Minimum Water Level Height description: '1D array of minimum sea surface elevations at each fixed cross-shore location along the cross-shore transect defined in [xFRF, yFRF]. Each sample point's location in FRF coordinates is found at the same index in xFRF and yFRF.' short_name: Min Water Level _FillValue: -999.99 _ChunkSizes: 1, 1551
	maxWaterLevel: Grid time: xFRF: units: m long_name: Maximum Water Level Height description: '1D array of maximum sea surface elevations at each fixed cross-shore location along the cross-shore transect defined in [xFRF, yFRF]. Each sample point's location in FRF coordinates is found at the same index in xFRF and yFRF.' short_name: Max Water Level _FillValue: -999.99 _ChunkSizes: 1, 1551
	waveEnergyDensity: Grid time: waveFrequency: xFRF: units: m^2/Hz standard_name: sea_surface_wave_variance_spectral_density long_name: Wave Energy Density description: 'Array of energy in each wave frequency from spectral analysis at each fixed cross-shore location along the cross-shore transect defined in [xFRF, yFRF]. This array uses the same indicies from waveFrequency and xFRF e.g. the energy at a given frequency band can be observed across all cross-shore locations or conversely, the energy at a given cross-shore location can be observed across all frequency bands.' short_name: Energy Density _FillValue: -999.99 _ChunkSizes: 1, 48, 1551
	waveHsIG: Grid time: xFRF: units: m standard_name: sea_surface_wave_significant_height long_name: Significant Infragravity Wave Height description: '1D array of significant infragravity wave heights (f < 0.04 Hz) at each fixed cross-shore location along the cross-shore transect defined in [xFRF, yFRF]. Hs is defined as (4*sqrt(m0)), where m0 is the zeroth moment, determined by integrating the power spectral density over the given frequency band. Each sample point's location in FRF coordinates is found at the same index in xFRF and yFRF.' short_name: Hs IG _FillValue: -999.99 _ChunkSizes: 1, 1551
	waveHs: Grid time: xFRF: units: m standard_name: sea_surface_wave_significant_height long_name: Sea/Swell Significant Wave Height description: '1D array of significant wave heights in the wind sea/swell band (0.04 < f < 0.3) at each fixed cross-shore location along the cross-shore transect defined in [xFRF, yFRF]. Hs is defined as (4*sqrt(m0)), where m0 is the zeroth moment, determined by integrating the power spectral density over the given frequency band. Each sample point's location in FRF coordinates is found at the same index in xFRF and yFRF.' short_name: Hs _FillValue: -999.99 _ChunkSizes: 1, 1551
	waveTmIG: Grid time: xFRF: units: s standard_name: sea_surface_wind_wave_mean_period_from_variance_spectral_density_inverse_frequency_moment long_name: Mean Wave Period description: '1D array of mean wave period in infragravity band (f < 0.04 Hz) at each fixed cross-shore location along the cross-shore transect defined in [xFRF, yFRF]. Tm is defined as the period associated with the frequency of the centroid of the spectrum over the given frequency band, f_centroid = sum(freq*amp)/sum(amp). Each sample point's location in FRF coordinates is found at the same index in xFRF and yFRF.' short_name: Tm IG _FillValue: -999.99 _ChunkSizes: 1, 1551
	waveTm: Grid time: xFRF: units: s standard_name: sea_surface_wind_wave_mean_period_from_variance_spectral_density_inverse_frequency_moment long_name: Mean Wave Period description: '1D array of mean wave period in wind wave/sea swell band (0.04 < f < 0.5) at each fixed cross-shore location along the cross-shore transect defined in [xFRF, yFRF]. Tm is defined as the period associated with the frequency of the centroid of the spectrum over the given frequency band, f_centroid = sum(freq*amp)/sum(amp). Each sample point's location in FRF coordinates is found at the same index in xFRF and yFRF.' short_name: Tm _FillValue: -999.99 _ChunkSizes: 1, 1551
	waveTp: Grid time: xFRF: units: s standard_name: sea_surface_wave_period_at_variance_spectral_density_maximum long_name: Peak Spectral Period description: '1D array of peak period in wind wave/sea swell band (0.04 < f < 0.5) at each fixed cross-shore location along the cross-shore transect defined in [xFRF, yFRF]. Peak period was determined by finding the frequency of the largest spectral peak in wind wave/sea swell band. Peaks were not tested for significance. Each sample point's location in FRF coordinates is found at the same index in xFRF and yFRF.' short_name: Tp _FillValue: -999.99 _ChunkSizes: 1, 1551
	waveHsTotal: Grid time: xFRF: units: m standard_name: sea_surface_wave_significant_height long_name: Total Significant Wave Height description: '1D array of total significant wave heights (Hs = 4 * standardDeviation(water surface elevation)) at each fixed cross-shore location along the cross-shore transect defined in [xFRF, yFRF]. Each sample point's location in FRF coordinates is found at the same index in xFRF and yFRF.' short_name: Hs Total _FillValue: -999.99 _ChunkSizes: 1, 1551
	waveSkewness: Grid time: xFRF: units: long_name: Wave Time series Skewness description: '1D array of skewness of the sea surface elevation time-series at each fixed cross-shore location along the cross-shore transect defined in [xFRF, yFRF]. Positive skewness indicates waves had peaked wave crests and flat wave troughs. Each sample point's location in FRF coordinates is found at the same index in xFRF and yFRF.' short_name: Skewness _FillValue: -999.99 _ChunkSizes: 1, 1551
	waveAsymmetry: Grid time: xFRF: units: long_name: Wave Time Series Asymmertry description: '1D array of asymmetry of the sea surface elevation time-series at each fixed cross-shore location along the cross-shore transect defined in [xFRF, yFRF]. Positive asymmtetry indicates pitched forward waves. Each sample point's location in FRF coordinates is found at the same index in xFRF and yFRF.' short_name: Asymmetry _FillValue: -999.99 _ChunkSizes: 1, 1551
	hydrodynamicsFlag: Array of 64 bit Reals [time = 0..63297] time: _FillValue: 9.0 units: long_name: Quality Control for Hydrodynamics Statistics flag_values: 1, 2, 3, 4, 9 flag_meanings: 1=good, 2=not_evaluated, 3=questionable, 4=bad, 9=missing description: Currently in development for realtime data. Ocean Data Standards, UNESCO 2013 - IOC Manurals and Guides, 54, Volume 3 Version 1. short_name: Hydro QC Flag _ChunkSizes: 360
	percentTimeSeriesMissing: Grid time: xFRF: units: long_name: Percentage of Time Series Missing description: Deciaml percentage of total time series at a cross-shore location where return values are not included. short_name: percentMissing _FillValue: -999.99 _ChunkSizes: 1, 1551

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 lidarLatitude;
    Float64 lidarLongitude;
    Float64 lidarX;
    Float64 lidarY;
    Float64 xFRF[xFRF = 1551];
    Float64 yFRF[xFRF = 1551];
    Float64 waveFrequency[waveFrequency = 48];
    Float64 time[time = 63298];
    Grid {
     ARRAY:
        Float64 waterLevel[time = 63298][xFRF = 1551];
     MAPS:
        Float64 time[time = 63298];
        Float64 xFRF[xFRF = 1551];
    } waterLevel;
    Grid {
     ARRAY:
        Float64 minWaterLevel[time = 63298][xFRF = 1551];
     MAPS:
        Float64 time[time = 63298];
        Float64 xFRF[xFRF = 1551];
    } minWaterLevel;
    Grid {
     ARRAY:
        Float64 maxWaterLevel[time = 63298][xFRF = 1551];
     MAPS:
        Float64 time[time = 63298];
        Float64 xFRF[xFRF = 1551];
    } maxWaterLevel;
    Grid {
     ARRAY:
        Float64 waveEnergyDensity[time = 63298][waveFrequency = 48][xFRF = 1551];
     MAPS:
        Float64 time[time = 63298];
        Float64 waveFrequency[waveFrequency = 48];
        Float64 xFRF[xFRF = 1551];
    } waveEnergyDensity;
    Grid {
     ARRAY:
        Float64 waveHsIG[time = 63298][xFRF = 1551];
     MAPS:
        Float64 time[time = 63298];
        Float64 xFRF[xFRF = 1551];
    } waveHsIG;
    Grid {
     ARRAY:
        Float64 waveHs[time = 63298][xFRF = 1551];
     MAPS:
        Float64 time[time = 63298];
        Float64 xFRF[xFRF = 1551];
    } waveHs;
    Grid {
     ARRAY:
        Float64 waveTmIG[time = 63298][xFRF = 1551];
     MAPS:
        Float64 time[time = 63298];
        Float64 xFRF[xFRF = 1551];
    } waveTmIG;
    Grid {
     ARRAY:
        Float64 waveTm[time = 63298][xFRF = 1551];
     MAPS:
        Float64 time[time = 63298];
        Float64 xFRF[xFRF = 1551];
    } waveTm;
    Grid {
     ARRAY:
        Float64 waveTp[time = 63298][xFRF = 1551];
     MAPS:
        Float64 time[time = 63298];
        Float64 xFRF[xFRF = 1551];
    } waveTp;
    Grid {
     ARRAY:
        Float64 waveHsTotal[time = 63298][xFRF = 1551];
     MAPS:
        Float64 time[time = 63298];
        Float64 xFRF[xFRF = 1551];
    } waveHsTotal;
    Grid {
     ARRAY:
        Float64 waveSkewness[time = 63298][xFRF = 1551];
     MAPS:
        Float64 time[time = 63298];
        Float64 xFRF[xFRF = 1551];
    } waveSkewness;
    Grid {
     ARRAY:
        Float64 waveAsymmetry[time = 63298][xFRF = 1551];
     MAPS:
        Float64 time[time = 63298];
        Float64 xFRF[xFRF = 1551];
    } waveAsymmetry;
    Float64 hydrodynamicsFlag[time = 63298];
    Grid {
     ARRAY:
        Float64 percentTimeSeriesMissing[time = 63298][xFRF = 1551];
     MAPS:
        Float64 time[time = 63298];
        Float64 xFRF[xFRF = 1551];
    } percentTimeSeriesMissing;
} frf/oceanography/waves/lidarHydrodynamics/lidarHydronamics.ncml;

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