netcdf frf/meteorology/metGauges/rain/rain.ncml {
  dimensions:
    time = 514238;
  variables:
    double time(time=514238);
      :_FillValue = -999.99; // double
      :units = "seconds since 1970-01-01 00:00:00";
      :standard_name = "time";
      :long_name = "UTC Sample Time";
      :calendar = "gregorian";
      :short_name = "time";
      :_ChunkSizes = 1000U; // uint

    byte sensorID(time=514238);
      :_FillValue = -99B; // byte
      :units = ;
      :description = "Sensor used in measurement";
      :long_name = ;
      :flag_meanings = "1=primary gauge, 2=secondary gauge, 3=average of primary and secondary and backup gauge";
      :short_name = "sensorID";
      :_ChunkSizes = 4464U; // uint

    double rain(time=514238);
      :_FillValue = -999.99; // double
      :units = "mm";
      :long_name = "Rain_total_10minutes";
      :description = "Cumulative rain total in 10 minute interval derived from multiple sensors.  See sensorID";
      :short_name = "Rain";
      :_ChunkSizes = 4464U; // uint

    byte qcFlag(time=514238);
      :_FillValue = -99B; // byte
      :units = ;
      :description = "Realtime QC flags for rain fall";
      :long_name = "Quality control flag value for air temperature";
      :flag_meanings = "1=passed, 2=not set, 3=questionable, 4=failed";
      :short_name = "QC_flag";
      :_ChunkSizes = 4464U; // uint

  // global attributes:
  :cdm_data_type = "Station";
  :featureType = "timeSeries";
  :station_name = "Met-rain";
  :title = "FRF Rain";
  :summary = "Meteorological data Collected at the USACE Coastal Hydraulics Laboratory (CHL), Field Research Facility (FRF) in Duck, NC. These data were collected in the main compound of the FRF.  Several different sensors and were used over the 30+ years of data collection. This data set is for the digital collection of tipping-bucket rain gauges.  Earlier rain data data exists for analog collections with a rain-weight gauges and daily observations of accumulation in plastic rain gauges.  Note - rain totals proir to Dec 2016 were not corrrected for rain-rate calibrations done in Dec 2016 - they used factory calibrations.   See the variable \'sensorID\' to match the sensor to each measurement using the \'gaugeInfo\' table. SensorID of 1 indicates an average of the primary and secondary gauges.  The variables primaryGaugeIndex and secondaryGaugeIndex keep track of which is which with numeric values that map into gaugeInfo (2-8).\n";
  :gaugeInfo = "ID    Manufacturer, model, serial number, comments\n 1    NA, NA, NA, Merged gauges\n 2    WeatherMeasure, 6010, NA, 31 May 2002 - present, tipping bucket on COAB-TattleTale 8 collection\n 4    Onset, RG3-M, 699585,  12 Apr 2004 1350 UTC  -11 Aug 2009 1520 UTC on Onset collection\n 5    Onset, RG3-M, 699584,  11 Aug 2009 1530 UTC - 17 Jul 2013 1400 UTC on Onset collection  \n 6    Onset, RG3-M, 9839290, 17 Jul 2013 1410 UTC  - 7 May 2015 1220 UTC on Onset collection\n 7    Onset, RG3-M, 9839290, 17 Jul 2013 1410 UTC  -  present on Zeno collection (rain2)\n 8    R.M. Young, 52202, 11159, 1 Nov 2016 - present on Zeno collection (rain1)\n";
  :history = "USACE/FRF";
  :source = "In situ observations from FRF-met_weather_zeno_rain_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 = "Atmosphere > Rain, Precipation, 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 = "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 = "2025-05-31";
  :date_issued = "2025-05-31";
  :project = "USACE/FRF observations";
  :id = "FRF-met_weather_Rain";
  :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 = 6.0; // double
  :geospatial_vertical_origin = "NAVD88";
  :geospatial_vertical_positive = "up";
  :geospatial_lat_min = 36.18253; // double
  :geospatial_lat_max = 36.18253; // double
  :geospatial_lat_units = "degrees_north";
  :geospatial_lon_min = -75.75161; // double
  :geospatial_lon_max = -75.75161; // double
  :geospatial_lon_units = "degrees_east";
  :time_coverage_start = "2025-05-01T00:00:00";
  :time_coverage_end = "2025-05-31T23:50:00";
  :deployment_start = "2016-04-28T20:00:00Z";
  :deployment_end = "present";
  :serialNumber = 26841.0; // double
  :comment = ; // double
}