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Global Attributes:	featureType: timeSeries title: FRF Paros Cross-Shore (125m) Sensor summary: USACE/CHL/COAB collected non-directional wave data using a Paroscientific pressure sensor the FRF (Duck, NC) cross-shore array (FRF cross-shore coordinates X=124.42, Y=939.26 m). The sensor was buried in the beach to help reduce pressure bias from currents (Bernouli effect). Record are collected hourly, 34 minutes with long, starting at the top of the hour. Data were sampled at 2 Hz. Frequency spectra were computed using 512 point ensembles and the Welch method of 50% ensemble overlap. Spectra were smoothed with 3-point frequency band averaging then interpolated to 0.0075 Hz bands between 0.04 and 0.5 Hz. Paros frequency signals are converted to analog voltage using COAB frequency to voltage converters and collected with a 16-bit A/D data logger. If the Paros gauge is believed to be buried less than 15cm (or not buried) then a linear wave theory pressure correction (PRF) is applied to the pressure spectra to get surface variance spectra. If the gauge is believed buried by more than 15 cm then a PRF for burried sensors was applied using the Raubenheimer method (Raubenheimer, B., Elgar, S., and Guza R.T. 1998. Journal or Waterway, Port, Coastal, and Ocean Engineering. Vol. 124, No. 3). PRF corrections exceeding 100x in energy are not applied at the high frequency end of the spectra. Data that use the survey or nominal depths for pressure correcting should be considered suspect (see the Zsource and depthTime variables). history: 2015-10-02:dataset created source: In situ observations from FRF-ocean_waves_xparos125m_YYYYMM.mat sourceUrl: (local files) standard_name_vocabulary: CFv25 Metadata_Conventions: Unidata Dataset Discovery v1.0, CF-1.6 metadata_link: N/A Conventions: CF-1.6 creator_name: USACE/CHL/COAB creator_url: http://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 Period, Oceans > Ocean Waves > Wave Spectra, 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_variance_spectral_density, sea_surface_wave_significant_height" processing: realtime organization: U.S. Army Corps of Engineers (USACE), Engineering Research and Development Center (ERDC), Coastal Hydraulics Laboratory (CHL), Observation and Analysis Branch (COAB) publisher_url: http://frf.usace.army.mil infoUrl: http://frf.usace.army.mil publisher_email: frfwebmaster@usace.army.mil publisher_name: USACE/CHL/COAB format_version: v1.0 institution: USACE/CHL/COAB contact: USACE/CHL/COAB contact_info: USACE/CHL/COAB contact_role: Owner contributor_name: USACE/CHL/COAB contributor_role: USACE/CHL/COAB naming_authority: FRF origin: USACE/CHL/COAB date_created: 2018-09-30 date_issued: 2018-09-30 acknowledgement: Data are provided by the Coastal Observations and Analysis Branch, Coastal and Hydraulics Laboratory, US Army Corps of Engineers, Duck, North Carolina. project: USACE/FRF observations id: FRF-ocean_waves_xp125m processing_level: L1 geospatial_vertical_units: m geospatial_vertical_resolution: 0.0 geospatial_vertical_min: -1.8 geospatial_vertical_max: -1.8 geospatial_vertical_origin: NAVD88 geospatial_lat_min: 36.1859903 geospatial_lat_max: 36.1859903 geospatial_lat_units: degrees_north geospatial_lon_min: -75.7516238 geospatial_lon_max: -75.7516238 geospatial_lon_units: degrees_east geospatial_vertical_positive: up time_coverage_start: 2018-09-30T23:00:00 time_coverage_end: 2018-09-30T23:00:00 deployment_start: 2015-10-02T21:00:00Z platform: FRF Cross-shore pipe 125m instrument: Paroscientific pressure gauge, xp125m cross_shore_angle_units: NA cross_shore_angle_description: NA cross_shore_angle: NA

Variables:	station_name: String station_name units: long_name: station name cf_role: timeseries_id short_name: station_name _ChunkSizes: 35 DODS: strlen: 35 dimName: station_name_length
	latitude: 64 bit Real latitude _FillValue: -999.0 units: degrees_north standard_name: latitude long_name: Latitude short_name: Lon
	longitude: 64 bit Real longitude _FillValue: -999.0 units: degrees_east standard_name: longitude long_name: Longitude short_name: Lon
	nominalDepth: 32 bit Real nominalDepth _FillValue: -999.0 units: m long_name: Nominal bottom vertical location from NAVD88 short_name: Bottom Elevation
	gaugeElevation: 32 bit Real gaugeElevation _FillValue: -999.0 units: m description: Gauge Vertical Position from NAVD88 long_name: Gauge Elevation short_name: Gauge Elevation
	waveFrequency: Array of 32 bit Reals [waveFrequency = 0..61] waveFrequency: _FillValue: -999.0 units: s-1 standard_name: wave_frequency long_name: Spectral Band Center Frequency short_name: Frequency _ChunkSizes: 62
	time: Array of 64 bit Reals [time = 0..20864] time: _FillValue: -999.0 units: seconds since 1970-01-01 00:00:00 standard_name: time long_name: UTC Sample Time calendar: gregorian short_name: time _ChunkSizes: 1000
	depth: Array of 32 bit Reals [time = 0..20864] time: standard_name: sea_floor_depth_below_sea_surface long_name: Water Depth (positive) Using Pressure Data description: Sensor depth estimate from gauge mean pressure, barometrically corrected short_name: Depth _FillValue: -999.0 units: m _ChunkSizes: 1
	waveHs: Array of 32 bit Reals [time = 0..20864] time: _FillValue: -999.0 units: m standard_name: sea_surface_wave_significant_height long_name: Significant Wave Height description: Significant wave height for frequencies between 0.04 and 0.5 Hz short_name: Wave Height coordinates: lat lon _ChunkSizes: 1
	waveHsIg: Array of 32 bit Reals [time = 0..20864] time: _FillValue: -999.0 units: m long_name: Significant Wave Height Infragravity Band description: Significant wave height for frequencies less than 0.04 Hz short_name: Wave Height Infragravity Band coordinates: lat lon _ChunkSizes: 1
	waveTp: Array of 32 bit Reals [time = 0..20864] time: _FillValue: -999.0 units: s standard_name: sea_surface_wave_frequency_at_variance_spectral_density_maximum description: Period of a parobolic fit to the peak of the energy density spectrum using the peak and two surrounding points. Computed for wave periods between 2 and 25 seconds long_name: Peak spectral period Between 2 and 20 seconds coordinates: lat lon short_name: Tp _ChunkSizes: 1
	waveTpfb: Array of 32 bit Reals [time = 0..20864] time: _FillValue: -999.0 units: s standard_name: sea_surface_wave_frequency_at_variance_spectral_density_maximum description: Period of a parobolic fit to the peak of the energy density spectrum using the peak and two surrounding points. Computed over entire spectrum long_name: Peak spectral period over full spectrum coordinates: lat lon short_name: Tpfb _ChunkSizes: 1
	waveTm: Array of 32 bit Reals [time = 0..20864] time: _FillValue: -999.0 units: s standard_name: sea_surface_wave_mean_period_from_variance_spectral_density_inverse_frequency_moment description: Period for the mean of the energy density spectrum long_name: Mean Spectral Period coordinates: lat lon short_name: Tm _ChunkSizes: 1
	waveTm1: Array of 32 bit Reals [time = 0..20864] time: _FillValue: -999.0 units: s standard_name: sea_surface_wave_mean_period_from variance_spectral_density_first_frequency_moment description: Period for the 1st moment mean of the energy density spectrum long_name: 1st Moment Mean Spectral Period coordinates: lat lon short_name: Tm1 _ChunkSizes: 1
	waveTm2: Array of 32 bit Reals [time = 0..20864] time: _FillValue: -999.0 units: s standard_name: sea_surface_wave_mean_period_from variance_spectral_density_second_frequency_moment description: Period for the 2nd moment mean of the energy density spectrum long_name: 2nd Moment Mean Spectral Period coordinates: lat lon short_name: Tm2 _ChunkSizes: 1
	pressureEnergyDensity: Grid time: waveFrequency: _FillValue: -999.0 units: m2 s description: Presure wave variance spectral density, not corrected for attenuation long_name: Band Energy Density short_name: 1D Wave Energy _ChunkSizes: 1, 62
	waveEnergyDensity: Grid time: waveFrequency: _FillValue: -999.0 units: m2 s standard_name: sea_surface_wave_variance_spectral_density long_name: Band Energy Density short_name: 1D Wave Energy _ChunkSizes: 1, 62
	depthElevation: Array of 32 bit Reals [time = 0..20864] time: _FillValue: -999.0 units: m long_name: Bottom Location From Sea Surface (NAVD88) description: Bottom vertical location from NAVD88 computed from the surveyed gauge depth and gauge height off the bottom based on altimeter or survey data, or nominal data. See depthSource.) short_name: BottomZ coordinates: lat lon _ChunkSizes: 1
	depthTime: Array of 64 bit Reals [time = 0..20864] time: _FillValue: -999.99 units: seconds since 1970-01-01 00:00:00 long_name: Time of depth estimate description: Time of depth estimate from altimeter, or survey, or initial deployment (nominal depth) short_name: BottomZ coordinates: lat lon _ChunkSizes: 1
	sourceZ: Array of 8 bit Bytes [time = 0..20864] time: _Unsigned: false _FillValue: -99 units: long_name: Source of determining bottom location relative to sensor (0=nominal depth, 1=altimeter, 2=bathymetric survey) short_name: BottomZ coordinates: lat lon _ChunkSizes: 1
	qcFlagE: Array of 8 bit Bytes [time = 0..20864] time: _Unsigned: false _FillValue: -99 units: description: Realtime QC flags for Spectral Estimates long_name: Quality control flag value for energy estimates flag_meanings: 1=passed, 2=not set, 3=questionable, 4=failed coordinates: lat lon short_name: QC_flag_E _ChunkSizes: 1
	waterLevel: Array of 32 bit Reals [time = 0..20864] time: _FillValue: -999.0 units: m standard_name: water_surface_height_above_reference_datum long_name: Water Level Height description: Water level based on sensor mean pressure and surveyed location of sensor (NAVD88), barometrically corrected, see mbar value short_name: Water Level coordinates: time lat lon _ChunkSizes: 1
	airPressure: Array of 32 bit Reals [time = 0..20864] time: _FillValue: -999.0 units: mbar standard_name: air_pressure long_name: Barometric Pressure description: Atmospheric pressure at sea level measured with a shore based sensor, averaged over wave record short_name: Barom Pressure coordinates: time lat lon _ChunkSizes: 1

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;
    Float32 nominalDepth;
    Float32 gaugeElevation;
    Float32 waveFrequency[waveFrequency = 62];
    Float64 time[time = 20865];
    Float32 depth[time = 20865];
    Float32 waveHs[time = 20865];
    Float32 waveHsIg[time = 20865];
    Float32 waveTp[time = 20865];
    Float32 waveTpfb[time = 20865];
    Float32 waveTm[time = 20865];
    Float32 waveTm1[time = 20865];
    Float32 waveTm2[time = 20865];
    Grid {
     ARRAY:
        Float32 pressureEnergyDensity[time = 20865][waveFrequency = 62];
     MAPS:
        Float64 time[time = 20865];
        Float32 waveFrequency[waveFrequency = 62];
    } pressureEnergyDensity;
    Grid {
     ARRAY:
        Float32 waveEnergyDensity[time = 20865][waveFrequency = 62];
     MAPS:
        Float64 time[time = 20865];
        Float32 waveFrequency[waveFrequency = 62];
    } waveEnergyDensity;
    Float32 depthElevation[time = 20865];
    Float64 depthTime[time = 20865];
    Byte sourceZ[time = 20865];
    Byte qcFlagE[time = 20865];
    Float32 waterLevel[time = 20865];
    Float32 airPressure[time = 20865];
} frf/oceanography/waves/xp125m/xp125m.ncml;

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