netcdf frf/projects/WaveShape/TritonADV/20170929/FRF-ocean_WaveShape_Triton_Crab20170929_03.nc {
  dimensions:
    station_name_length = 42;
    time = UNLIMITED;   // (2545 currently)
  variables:
    double time(time=2545);
      :_FillValue = -999.99; // double
      :units = "seconds since 1970-01-01 00:00:00";
      :short_name = "time";
      :long_name = "UTC Sample Time";
      :standard_name = "time";
      :calendar = "gregorian";
      :_ChunkSizes = 1000U; // uint

    double latitude;
      :_FillValue = -999.99; // double
      :units = "degrees_north";
      :short_name = "lat";
      :long_name = "Latitude";
      :standard_name = "latitude";

    double longitude;
      :_FillValue = -999.99; // double
      :units = "degrees_east";
      :short_name = "lon";
      :long_name = "Longitude";
      :standard_name = "longitude";

    double burstNumber(time=2545);
      :_FillValue = -999.99; // double
      :units = ;
      :short_name = "Burst Number";
      :long_name = "Burst Number";
      :coordinates = "time lat lon";
      :note = "Burst numbers start when instrument deployed, therefore start at the beginning of each sample day";
      :_ChunkSizes = 2545U; // uint

    double sampleNumber(time=2545);
      :_FillValue = -999.99; // double
      :units = ;
      :short_name = "Sample Number";
      :long_name = "Sample Number";
      :coordinates = "time lat lon";
      :note = "Sample number within burst";
      :_ChunkSizes = 2545U; // uint

    double currentEast(time=2545);
      :_FillValue = -999.99; // double
      :units = "m s-1";
      :short_name = "Eastward Current Profile";
      :long_name = "Eastward Current Profile";
      :standard_name = "eastward_sea_water_velocity";
      :description = "Eastward current profile. Direction is towards true-E";
      :coordinates = "time lat lon";
      :note = "Crab is a giant piece of metal and direction data may be questionable.";
      :_ChunkSizes = 2545U; // uint

    double currentNorth(time=2545);
      :_FillValue = -999.99; // double
      :units = "m s-1";
      :short_name = "Northward Current Profile";
      :long_name = "Northward Current Profile";
      :standard_name = "northward_sea_water_velocity";
      :description = "Northward current profile. Direction is towards true-N";
      :coordinates = "time lat lon";
      :note = "Crab is a giant piece of metal and direction data may be questionable.";
      :_ChunkSizes = 2545U; // uint

    double currentUp(time=2545);
      :_FillValue = -999.99; // double
      :units = "m s-1";
      :short_name = "Upward Current Profile";
      :long_name = "Upward Current Profile";
      :standard_name = "upward_sea_water_velocity";
      :positive = "upward";
      :coordinates = "time lat lon";
      :note = "Crab is a giant piece of metal and direction data may be questionable.";
      :_ChunkSizes = 2545U; // uint

    double beam1Intensity(time=2545);
      :coordinates = "time lat lon";
      :note = ;
      :_FillValue = -999.99; // double
      :units = ;
      :short_name = "Beam-1 Echo";
      :long_name = "Beam-1 Echo Intensity";
      :_ChunkSizes = 2545U; // uint

    double beam2Intensity(time=2545);
      :_FillValue = -999.99; // double
      :units = ;
      :short_name = "Beam-2 Echo";
      :long_name = "Beam-2 Echo Intensity";
      :coordinates = "time lat lon";
      :note = ;
      :_ChunkSizes = 2545U; // uint

    double beam3Intensity(time=2545);
      :_FillValue = -999.99; // double
      :units = ;
      :short_name = "Beam-3 Echo";
      :long_name = "Beam-3 Echo Intensity";
      :coordinates = "time lat lon";
      :note = ;
      :_ChunkSizes = 2545U; // uint

    double beam1Correlation(time=2545);
      :_FillValue = -999.99; // double
      :units = "percent";
      :short_name = "Beam1 Corr";
      :long_name = "Beam 1 Correlation";
      :coordinates = "time lat lon";
      :note = ;
      :_ChunkSizes = 2545U; // uint

    double beam2Correlation(time=2545);
      :_FillValue = -999.99; // double
      :units = "percent";
      :short_name = "Beam2 Corr";
      :long_name = "Beam 2 Correlation";
      :coordinates = "time lat lon";
      :note = ;
      :_ChunkSizes = 2545U; // uint

    double beam3Correlation(time=2545);
      :_FillValue = -999.99; // double
      :units = "percent";
      :short_name = "Beam3 Corr";
      :long_name = "Beam 3 Correlation";
      :coordinates = "time lat lon";
      :note = ;
      :_ChunkSizes = 2545U; // uint

    double currentSpeed(time=2545);
      :_FillValue = -999.99; // double
      :units = "m s-1";
      :short_name = "Current Speed";
      :long_name = "Vertically Averaged Current Speed";
      :standard_name = "sea_water_speed";
      :coordinates = "time lat lon";
      :note = ;
      :_ChunkSizes = 2545U; // uint

    double currentDirection(time=2545);
      :_FillValue = -999.99; // double
      :units = "degree";
      :short_name = "Current Direction";
      :long_name = "Vertically Averaged Current Direction";
      :standard_name = "sea_water_from_direction";
      :coordinates = "time lat lon";
      :note = "Corrected for magnetic declination. Crab is a giant piece of metal and direction data may be questionable.";
      :_ChunkSizes = 2545U; // uint

    double pressure(time=2545);
      :_FillValue = -999.99; // double
      :units = "dbar";
      :short_name = "pressure";
      :long_name = "pressure";
      :coordinates = "time lat lon";
      :note = "Barometric corrected. Using local pressure and estimated offset of 10.175 corresponding to zeroing of instrument.";
      :_ChunkSizes = 2545U; // uint

  // global attributes:
  :cdm_data_type = "Station";
  :featureType = "timeSeries";
  :title = "FRF Wave Shape 6.1, Sontek Triton ADV data";
  :summary = "Current and pressure data collected at the USACE Coastal Hydraulics Laboratory (CHL), Field Research Facility (FRF) in Duck, NC. These data were collected in the Atlantic Ocean at numerous stations in the surf zone in Sep 2017 and Oct 2017. Data were collected with a Sontek Triton acoustic Doppler velocimeter sensor mounted  on the Coastal Research Amphibious Buggy (CRAB) along with other acoustic and optical sensors. The Triton measured current velocities, pressure, and backscatter amplitude. The CRAB occupied numerous stations near the break point in the surf zone on each field day.   Stations were typically occupied for 30 minutes. Data were sampled at 2 Hz for the first ~ 52 minutes of each hour while the CRAB was in the water. A .nc file was created for each station.\n";
  :history = "USACE/FRF";
  :source = "In situ observations from Triton_Crabmmddyy.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://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 Acoustics > Current velocity, 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";
  :processing = "post process";
  :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 = "2018-07-27";
  :date_issued = "2018-07-27";
  :project = "USACE/FRF observations";
  :id = "FRF-ocean_WaveShape_Triton";
  :acknowledgement = "Data are provided by the U.S. Army Engineer Research and Development Center, Coastal and Hydraulics Laboratory, Duck, NC.";
  :processing_level = "L1";
  :geospatial_vertical_units = "m";
  :geospatial_vertical_resolution = 0.0; // double
  :geospatial_vertical_min = -6.0; // double
  :geospatial_vertical_max = 1.0; // double
  :geospatial_vertical_origin = "NAVD88";
  :geospatial_vertical_positive = "up";
  :geospatial_lat_units = "degrees_north";
  :geospatial_lon_units = "degrees_east";
  :nomDepth_units = "m";
  :sensorHeightAboveBottom = 0.4; // double
  :manufacturer = "Sontek";
  :model = "Triton";
  :serialNumber = "R276";
  :comment = "Instrument height above bottom varied from about 0.1 meters to 0.5 meters as CRAB sank into the bottom over time.";
  :Station = "20170929_03";
  :geospatial_lat_min = 36.18596; // double
  :geospatial_lat_max = 36.18596; // double
  :geospatial_lon_min = -75.74944; // double
  :geospatial_lon_max = -75.74944; // double
  :time_coverage_start = "29-Sep-2017 15:46:00";
  :time_coverage_end = "29-Sep-2017 16:16:00";
  :deployment_start = "29-Sep-2017 15:46:00";
  :deployment_end = "29-Sep-2017 16:16:00";
  :nomDepth = 3.4205; // double
  :nomDepthNote = "Water depth at station calculated from End of Pier water level - Crab surveyed bottom elevation at start of station";
}