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Global Attributes:	title: lidarWaveGauge140 cdm_data_type: Station featureType: timeSeries summary: Lidar Water Surface Elevation data from a time series for a calculated wave gauge at 140 meters in FRF cross-shore (100 meters down-line from LiDAR scanner) 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. 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: Oceans > Ocean Waves > Wave Frequency, Oceans > Ocean Waves > Wave Height, Oceans > Ocean Waves > Wave Length, Oceans > Ocean Waves > Wave Period, 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, sea_surface_wave_significant_height, 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: 2025-03-31 date_issued: 2025-03-31 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: 140.0 processing_level: L1 geospatial_vertical_units: m geospatial_vertical_resolution: 0.0 geospatial_vertical_min: 0.0 geospatial_vertical_max: 0.0 geospatial_vertical_origin: NAVD88 (geoid12b) geospatial_lat_min: 36.18606888306548 geospatial_lat_max: 36.18606888306548 geospatial_lat_units: degrees_north geospatial_lon_min: -75.75147341349512 geospatial_lon_max: -75.75147341349512 geospatial_lon_units: degrees_east geospatial_vertical_positive: up time_coverage_start: 1970-01-09T13:27:57 time_coverage_end: 1970-01-09T13:28:27 deployment_start: 2015-01-15T15:20:00Z platform: North lidar tower instrument: Riegl VZ-1000 or VZ-2000 terrestrial laser scanner cross_shore_angle_units: degrees cross_shore_angle_description: corss-shore angle at the USACE FRF site in Duck, NC cross_shore_angle: 10.0 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)

Variables:	station_name: String station_name units: long_name: station name cf_role: timeseries_id short_name: station_name DODS: strlen: 17 dimName: station_name_length
	latitude: 64 bit Real latitude _FillValue: -999.99 units: degrees_north standard_name: latitude long_name: Latitude description: 'Latitude in degrees north for the location of the virtual wave gauge. Longitude for the location of the gauge is found in Longitude. Gauge location in FRF coordinates is listed in xFRF and yFRF.' short_name: lat
	longitude: 64 bit Real longitude _FillValue: -999.99 units: degrees_east standard_name: longitude long_name: Longitude description: 'Longitude in degrees east for the location of the virtual wave gauge. Latitude for the location of the gauge is found in Latitude. Gauge location in FRF coordinates is listed in xFRF and yFRF.' short_name: lon
	xFRF: 64 bit Real xFRF _FillValue: -999.99 units: m long_name: Local FRF Cross-Shore Coordinate description: 'X-coordinate (cross-shore) of the virtual wave gauge location in FRF coordinate system. Y-coordinate (alongshore) for the gauge is found in yFRF. Gauge location in latitude and longitude is listed in Latitude and Longitude. See Global Attributes for specifications of FRF coordinate system.' short_name: Cross Shore
	yFRF: 64 bit Real yFRF _FillValue: -999.99 units: m long_name: Local FRF Along-Shore Coordinate description: 'Y-coordinate (alongshore) of the virtual wave gauge location in FRF coordinate system. X-coordinate (cross-shore) for the gauge is found in xFRF. Gauge location in latitude and longitude is listed in Latitude and Longitude. See Global Attributes for specifications of FRF coordinate system.' short_name: Along Shore
	tsTime: Array of 64 bit Reals [tsTime = 0..12600] tsTime: _FillValue: -999.99 units: seconds since 1970-01-01 00:00:00 long_name: Sample Time of Hourly Time Series description: '1D array of time offsets in decimal seconds from recorded time for the associated time series of water surface elevations listed in waterLevelTimeSeries. Time series completeness is reflected in percentTimeSeriesMissing and medianTimeSeriesGap.' short_name: tsTime
	waveFrequency: Array of 64 bit Reals [waveFrequency = 0..47] waveFrequency: _FillValue: -999.99 units: Hz standard_name: wave_frequency long_name: Band Center frequency description: '1D array listing the center of wave frequency bands from the Fourier analysis of the water surface elevation time series from the virtual wave gauge. The measured wave energies are grouped into frequency bins indexed in this array.' short_name: Frequency
	time: Array of 64 bit Reals [time = 0..62262] 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 bulk and spectral statistics derived from the time series at the virtual gauge location.' short_name: time _ChunkSizes: 512
	waterLevelTimeSeries: Grid time: tsTime: _FillValue: -999.99 units: m standard_name: water_surface_height_above_reference_datum long_name: Water Level Time Series description: '1D array containing a time series of sea surface elevations at times listed in tsTime. Time series completeness is reflected in percentTimeSeriesMissing and medianTimeSeriesGap. See Global Attributes for specifications of datum and geoid.' short_name: Water Level Time Series _ChunkSizes: 1, 12601
	waterLevel: Array of 64 bit Reals [time = 0..62262] time: _FillValue: -999.99 units: m standard_name: water_surface_height_above_reference_datum long_name: Water Level Height description: 'Mean of the water surface elevation time series collected at the virtual wave gauge. QCBulkFlag indicates statistic quality. The complete time series is listed in waterSurfaceElevation. The gauge location in FRF coordinates is found in xFRF, yFRF.' short_name: Water Level _ChunkSizes: 353
	minWaterLevel: Array of 64 bit Reals [time = 0..62262] time: units: m long_name: Minimum Water Level Height description: 'Minimum of the water surface elevation time series collected at the virtual wave gauge. QCBulkFlag indicates statistic quality. The complete time series is listed in waterSurfaceElevation. The gauge location in FRF coordinates is found in xFRF, yFRF.' short_name: Min Water Level _FillValue: -999.99 _ChunkSizes: 353
	maxWaterLevel: Array of 64 bit Reals [time = 0..62262] time: units: m long_name: Maximum Water Level Height description: 'Maximum of the water surface elevation time series collected at the virtual wave gauge. QCBulkFlag indicates statistic quality. The complete time series is listed in waterSurfaceElevation. The gauge location in FRF coordinates is found in xFRF, yFRF.' short_name: Max Water Level _FillValue: -999.99 _ChunkSizes: 353
	waveEnergyDensity: Grid time: waveFrequency: 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 band from the Fourier analysis of the water surface elevation time series at the virtual wave gauge. This array uses the same indicies for frequency bands listed in waveFrequency. The complete time series is listed in waterSurfaceElevation. QCSpectralFlag indicates statistic quality.' short_name: Energy Density _FillValue: -999.99 _ChunkSizes: 1, 48
	waveHsIG: Array of 64 bit Reals [time = 0..62262] time: units: m standard_name: sea_surface_wave_significant_height long_name: Significant Infragravity Wave Height description: 'Significant wave height over the infragravity band (f < 0.04 Hz) at the virtual wave gauge determined from the spectral analysis of the water surface elevation. The complete time series is listed in waterSurfaceElevation. QCSpectralFlag indicates statistic quality.' short_name: Hs IG _FillValue: -999.99 _ChunkSizes: 353
	waveHs: Array of 64 bit Reals [time = 0..62262] time: units: m long_name: Sea/Swell Significant Wave Height description: 'Significant wave height over the incident wind sea/ swell band (0.04 < f < 0.5) at the virtual wave gauge determined from the spectral analysis of the water surface elevation. The complete time series is listed in waterSurfaceElevation. QCSpectralFlag indicates statistic quality.' short_name: Hs _FillValue: -999.99 _ChunkSizes: 353
	waveTmIG: Array of 64 bit Reals [time = 0..62262] time: units: s standard_name: sea_surface_wind_wave_mean_period_from_variance_spectral_density_inverse_frequency_moment long_name: Mean Wave Period description: 'Mean wave period over the infragravity band (f < 0.04 Hz) at the virtual wave gauge determined from the spectral analysis of the water surface elevation. 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). The complete time series is listed in waterSurfaceElevation. QCSpectralFlag indicates statistic quality.' short_name: Tm IG _FillValue: -999.99 _ChunkSizes: 353
	waveTm: Array of 64 bit Reals [time = 0..62262] time: units: s standard_name: sea_surface_wind_wave_mean_period_from_variance_spectral_density_inverse_frequency_moment long_name: Mean Wave Period description: 'Mean wave period over the incident wind sea/ swell band (0.04 < f < 0.5) at the virtual wave gauge determined from the spectral analysis of the water surface elevation. 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). The complete time series is listed in waterSurfaceElevation. QCSpectralFlag indicates statistic quality.' short_name: Tm _FillValue: -999.99 _ChunkSizes: 353
	waveTp: Array of 64 bit Reals [time = 0..62262] time: units: s standard_name: sea_surface_wave_period_at_variance_spectral_density_maximum long_name: Peak Spectral Period description: 'Peak period over the incident wind sea/ swell band (0.04 < f < 0.5) at the virtual wave gauge determined from the spectral analysis of the water surface elevation. The complete time series is listed in waterSurfaceElevation. QCSpectralFlag indicates statistic quality.' short_name: Tp _FillValue: -999.99 _ChunkSizes: 353
	waveHsTotal: Array of 64 bit Reals [time = 0..62262] time: units: m standard_name: sea_surface_wave_significant_height long_name: Total Significant Wave Height description: 'Total significant wave height (Hs = 4 * standardDeviation(water surface elevation)) computed from the water surface elevation time series at the virtual wave gauge. QCBulkFlag indicates statistic quality. The complete time series is listed in waterSurfaceElevation.' short_name: Hs Total _FillValue: -999.99 _ChunkSizes: 353
	waterLevelQCFlag: Array of 64 bit Reals [time = 0..62262] time: _FillValue: 2.0 units: long_name: Water Level QC Flag flag_values: 1, 2, 3, 4, 9 flag_meanings: 1=good, 2=not_evaluated, 3=questionable, 4=bad, 9=missing description: 'Water Level statistics include waveHsTotal, waterLevel, maxWaterLevel, and minWaterLevel. Flag 1 indicates Water Level statistics are reliable (average sampling rate of 2 Hz in time series). Flag 3 indicates Water Level statistics most likely reliable (80 continuous seconds of 2 Hz samlping rate in time series). Flag 4 indicates Water Level statistics unreliable (no continuous seconds of 2 Hz sampling). General flag definitions guided by the Ocean Data Standards, UNESCO 2013 - IOC Manurals and Guides, 54, Volume 3 Version 1.' short_name: Water Level QC Flag _ChunkSizes: 353
	qcFlagE: Array of 64 bit Reals [time = 0..62262] time: _FillValue: 9.0 units: long_name: QC Flag Energy Spectra flag_values: 1, 2, 3, 4, 9 flag_meanings: 1=good, 2=not_evaluated, 3=questionable, 4=bad, 9=missing description: 'Spectral statistics include waveFrequency, waveEnergyDensity, waveHsIG, waveHsIN, waveTmIG, waveTmIN, waveTpIN. Flag 1 indicates both spectral statistics (wind sea/swell and infragravity) are reliable (over 29 min of 2 Hz data in time series). Flag 3 indicates only sea/swell wave (period less than 25s) statistics are reliable (between 17 and 29 min of 2 Hz data). Flag 4 indicates no spectral statistics are reliable (less than 17 min of 2Hz data). General flag definitions guided by the Ocean Data Standards, UNESCO 2013 - IOC Manurals and Guides, 54, Volume 3 Version 1.' short_name: QC Flag Energy Spectra _ChunkSizes: 353
	percentTimeSeriesMissing: Array of 64 bit Reals [time = 0..62262] time: units: long_name: Percentage of Time Series Missing description: Percentage of total time series where return values are not included. short_name: percentMissing _FillValue: -999.99 _ChunkSizes: 353
	medianTimeSeriesGap: Array of 64 bit Reals [time = 0..62262] time: units: seconds long_name: Median Time Series Gap Duration description: Median duration of time gap (in seconds) in waterLevelTimeSeries time series with no measurement. short_name: medianGap _FillValue: -999.99 _ChunkSizes: 353

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 latitude;
    Float64 longitude;
    Float64 xFRF;
    Float64 yFRF;
    Float64 tsTime[tsTime = 12601];
    Float64 waveFrequency[waveFrequency = 48];
    Float64 time[time = 62263];
    Grid {
     ARRAY:
        Float64 waterLevelTimeSeries[time = 62263][tsTime = 12601];
     MAPS:
        Float64 time[time = 62263];
        Float64 tsTime[tsTime = 12601];
    } waterLevelTimeSeries;
    Float64 waterLevel[time = 62263];
    Float64 minWaterLevel[time = 62263];
    Float64 maxWaterLevel[time = 62263];
    Grid {
     ARRAY:
        Float64 waveEnergyDensity[time = 62263][waveFrequency = 48];
     MAPS:
        Float64 time[time = 62263];
        Float64 waveFrequency[waveFrequency = 48];
    } waveEnergyDensity;
    Float64 waveHsIG[time = 62263];
    Float64 waveHs[time = 62263];
    Float64 waveTmIG[time = 62263];
    Float64 waveTm[time = 62263];
    Float64 waveTp[time = 62263];
    Float64 waveHsTotal[time = 62263];
    Float64 waterLevelQCFlag[time = 62263];
    Float64 qcFlagE[time = 62263];
    Float64 percentTimeSeriesMissing[time = 62263];
    Float64 medianTimeSeriesGap[time = 62263];
} frf/oceanography/waves/lidarWaveGauge140/lidarWaveGauge140.ncml;

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