netcdf RDIADCP300WH15551_20110720T000000Z_20110720T235958Z-binMapNearest_3beamOn { dimensions: time = 43200 ; depth = 54 ; latitude = 1 ; longitude = 1 ; variables: double time(time) ; time:sdn_parameter_name = "time" ; time:long_name = "time" ; time:axis = "T" ; time:calendar = "gregorian" ; time:units = "days since 1970-01-01 00:00:00" ; double binmap_depth(depth) ; binmap_depth:sdn_parameter_name = "depth" ; binmap_depth:long_name = "water depth of final velocity measurement bins" ; binmap_depth:units = "meters" ; binmap_depth:axis = "Z" ; binmap_depth:positive = "down" ; binmap_depth:comment = "Water depth for the u (east), v (north), w (up), velocityError seawater velocity bins, accounting for bin-mapping" ; double depth(depth) ; depth:sdn_parameter_name = "depth" ; depth:long_name = "water depth of beam-averaged measurement bins, tilt-corrected" ; depth:units = "meters" ; depth:axis = "Z" ; depth:positive = "down" ; depth:comment = "Water depth of measurement bins corrected for tilt, applies to meanBackscatter (beam-averaged backscatter)" ; double range(depth) ; range:sdn_parameter_name = "range" ; range:long_name = "range from transducer" ; range:units = "meters" ; range:comment = "Range of measurement bins from the transducer, applies to all parameters except: meanBackscatter and u, v, w, velocityError when bin-mapping is on" ; double latitude(latitude) ; latitude:sdn_parameter_name = "latitude" ; latitude:long_name = "latitude" ; latitude:units = "degree_north" ; latitude:axis = "Y" ; double longitude(longitude) ; longitude:sdn_parameter_name = "longitude" ; longitude:long_name = "longitude" ; longitude:units = "degree_east" ; longitude:axis = "X" ; double u(depth, time) ; u:_FillValue = -9999999. ; u:sdn_parameter_name = "eastward_sea_water_velocity" ; u:long_name = "eastward sea water velocity" ; u:units = "m s-1" ; double v(depth, time) ; v:_FillValue = -9999999. ; v:sdn_parameter_name = "northward_sea_water_velocity" ; v:long_name = "northward sea water velocity" ; v:units = "m s-1" ; double w(depth, time) ; w:_FillValue = -9999999. ; w:sdn_parameter_name = "upward_sea_water_velocity" ; w:long_name = "upward sea water velocity" ; w:units = "m s-1" ; double velocityError(depth, time) ; velocityError:_FillValue = -9999999. ; velocityError:sdn_parameter_name = "indicative_error_from_multibeam_acoustic_doppler_velocity_profiler_in_sea_water" ; velocityError:long_name = "acoustic doppler current profiler error velocity" ; velocityError:units = "m s-1" ; double meanBackscatter(depth, time) ; meanBackscatter:_FillValue = -9999999. ; meanBackscatter:sdn_parameter_name = "sound_intensity_level_in_water" ; meanBackscatter:long_name = "acoustic doppler current profiler beam-averaged corrected acoustic backscatter" ; meanBackscatter:units = "dB" ; meanBackscatter:comment = "beam averaged and corrected for two-way beam spreading and attenuation, not bin-mapped, use with tilt-corrected water depth" ; double intens_beam1(depth, time) ; intens_beam1:_FillValue = -9999999. ; intens_beam1:sdn_parameter_name = "signal_intensity_from_multibeam_acoustic_doppler_velocity_sensor_in_sea_water" ; intens_beam1:long_name = "acoustic doppler current profiler return signal strength intensity beam 1" ; intens_beam1:units = "counts" ; double intens_beam2(depth, time) ; intens_beam2:_FillValue = -9999999. ; intens_beam2:sdn_parameter_name = "signal_intensity_from_multibeam_acoustic_doppler_velocity_sensor_in_sea_water" ; intens_beam2:long_name = "acoustic doppler current profiler return signal strength intensity beam 2" ; intens_beam2:units = "counts" ; double intens_beam3(depth, time) ; intens_beam3:_FillValue = -9999999. ; intens_beam3:sdn_parameter_name = "signal_intensity_from_multibeam_acoustic_doppler_velocity_sensor_in_sea_water" ; intens_beam3:long_name = "acoustic doppler current profiler return signal strength intensity beam 3" ; intens_beam3:units = "counts" ; double intens_beam4(depth, time) ; intens_beam4:_FillValue = -9999999. ; intens_beam4:sdn_parameter_name = "signal_intensity_from_multibeam_acoustic_doppler_velocity_sensor_in_sea_water" ; intens_beam4:long_name = "acoustic doppler current profiler return signal strength intensity beam 4" ; intens_beam4:units = "counts" ; double corr_beam1(depth, time) ; corr_beam1:_FillValue = -9999999. ; corr_beam1:sdn_parameter_name = "beam_consistency_indicator_from_multibeam_acoustic_doppler_velocity_profiler_in_sea_water" ; corr_beam1:long_name = "acoustic doppler current profiler correlation magnitude beam 1" ; corr_beam1:units = "counts" ; double corr_beam2(depth, time) ; corr_beam2:_FillValue = -9999999. ; corr_beam2:sdn_parameter_name = "beam_consistency_indicator_from_multibeam_acoustic_doppler_velocity_profiler_in_sea_water" ; corr_beam2:long_name = "acoustic doppler current profiler correlation magnitude beam 2" ; corr_beam2:units = "counts" ; double corr_beam3(depth, time) ; corr_beam3:_FillValue = -9999999. ; corr_beam3:sdn_parameter_name = "beam_consistency_indicator_from_multibeam_acoustic_doppler_velocity_profiler_in_sea_water" ; corr_beam3:long_name = "acoustic doppler current profiler correlation magnitude beam 3" ; corr_beam3:units = "counts" ; double corr_beam4(depth, time) ; corr_beam4:_FillValue = -9999999. ; corr_beam4:sdn_parameter_name = "beam_consistency_indicator_from_multibeam_acoustic_doppler_velocity_profiler_in_sea_water" ; corr_beam4:long_name = "acoustic doppler current profiler correlation magnitude beam 4" ; corr_beam4:units = "counts" ; double percentGood_beam1(depth, time) ; percentGood_beam1:_FillValue = -9999999. ; percentGood_beam1:sdn_parameter_name = "proportion_of_acceptable_signal_returns_from_acoustic_instrument_in_sea_water" ; percentGood_beam1:long_name = "acoustic doppler current profiler percent good beam 1" ; percentGood_beam1:units = "percent" ; double percentGood_beam2(depth, time) ; percentGood_beam2:_FillValue = -9999999. ; percentGood_beam2:sdn_parameter_name = "proportion_of_acceptable_signal_returns_from_acoustic_instrument_in_sea_water" ; percentGood_beam2:long_name = "acoustic doppler current profiler percent good beam 2" ; percentGood_beam2:units = "percent" ; double percentGood_beam3(depth, time) ; percentGood_beam3:_FillValue = -9999999. ; percentGood_beam3:sdn_parameter_name = "proportion_of_acceptable_signal_returns_from_acoustic_instrument_in_sea_water" ; percentGood_beam3:long_name = "acoustic doppler current profiler percent good beam 3" ; percentGood_beam3:units = "percent" ; double percentGood_beam4(depth, time) ; percentGood_beam4:_FillValue = -9999999. ; percentGood_beam4:sdn_parameter_name = "proportion_of_acceptable_signal_returns_from_acoustic_instrument_in_sea_water" ; percentGood_beam4:long_name = "acoustic doppler current profiler percent good beam 4" ; percentGood_beam4:units = "percent" ; double velocity_beam1(depth, time) ; velocity_beam1:_FillValue = -9999999. ; velocity_beam1:sdn_parameter_name = "radial_sea_water_velocity_away_from_instrument" ; velocity_beam1:long_name = "radial velocity beam 1" ; velocity_beam1:units = "m s-1" ; double velocity_beam2(depth, time) ; velocity_beam2:_FillValue = -9999999. ; velocity_beam2:sdn_parameter_name = "radial_sea_water_velocity_away_from_instrument" ; velocity_beam2:long_name = "radial velocity beam 2" ; velocity_beam2:units = "m s-1" ; double velocity_beam3(depth, time) ; velocity_beam3:_FillValue = -9999999. ; velocity_beam3:sdn_parameter_name = "radial_sea_water_velocity_away_from_instrument" ; velocity_beam3:long_name = "radial velocity beam 3" ; velocity_beam3:units = "m s-1" ; double velocity_beam4(depth, time) ; velocity_beam4:_FillValue = -9999999. ; velocity_beam4:sdn_parameter_name = "radial_sea_water_velocity_away_from_instrument" ; velocity_beam4:long_name = "radial velocity beam 4" ; velocity_beam4:units = "m s-1" ; double temperature(time) ; temperature:_FillValue = -9999999. ; temperature:sdn_parameter_name = "sea_water_temperature" ; temperature:long_name = "sea water temperature" ; temperature:units = "K" ; double compassHeading(time) ; compassHeading:_FillValue = -9999999. ; compassHeading:sdn_parameter_name = "direction_of_radial_vector_away_from_instrument" ; compassHeading:long_name = "compass heading aligned with instrument axis" ; compassHeading:units = "degree" ; compassHeading:comment = "compass heading corrected for true north, instrument axis and compass heading is nominally aligned with beam 3" ; double pitch(time) ; pitch:_FillValue = -9999999. ; pitch:sdn_parameter_name = "platform_pitch_angle" ; pitch:long_name = "pitch" ; pitch:units = "degree" ; double roll(time) ; roll:_FillValue = -9999999. ; roll:sdn_parameter_name = "platform_roll_angle" ; roll:long_name = "roll" ; roll:units = "degree" ; double pressure(time) ; pressure:_FillValue = -9999999. ; pressure:sdn_parameter_name = "sea_water_pressure" ; pressure:long_name = "sea water pressure" ; pressure:units = "dbar" ; double sound_speed(time) ; sound_speed:_FillValue = -9999999. ; sound_speed:sdn_parameter_name = "speed_of_sound_in_sea_water" ; sound_speed:long_name = "speed of sound in sea water" ; sound_speed:units = "m s-1" ; // global attributes: :Conventions = "CF-1.7" ; :title = "Ocean Networks Canada Teledyne-RDI ADCP Data" ; :institution = "Ocean Networks Canada" ; :source = "Fixed-position Teledyne-RDI ADCP 300 kHz" ; :references = "https://www.oceannetworks.ca/" ; :comment = "Detailed documentation: https://wiki.oceannetworks.ca/display/DP/5" ; :history = "Includes data extracted from raw output, minimally processed, and processed data" ; :processing_comments = "adcp.velocity contains the raw beam radial velocities for each beam. adcp.u/v/w are processed velocities relative to true East/North/Up, respectively. Using a fixed true heading of 89 degrees from metadata. This device does not have a fixed value for pitch or pitch sensor assigned; using onboard sensor for pitch (pitch gimbal correction applied). This device does not have a fixed value for roll or roll sensor assigned; using onboard sensor for roll. Correlation screening applied to a threshold of 64 counts, while the onboard screen (WC) was 0 counts. Number of NaNs before: 0, number after: 614627 (9331200 data points total). Fish / False Target Detection was not applied because the threshold was 255. (This step is only applied for Beam co-ordinate data with a threshold other than 0 or 255 (off)), Instr and Earth data will have it applied onboard the device.) Nearest vertical bin (RDI method) bin-mapping applied to align the beam range bins vertically, correcting for tilt. Average or fixed tilt is 2.5341 degrees (for information only, averages are not used in correction). adcp.range is the vertical range to the corrected bin centres. Also note: results may not match winADCP as it does not respond to EX(5), the command for bin-mapping, winADCP always does bin-mapping on beam co-ordinate data. Three beam solution applied to 125799 individual bins (of 9331200 total). Error velocity screening applied to a threshold of 2 m/s. Number of NaNs before: 652152, number after: 652980 (9331200 data points total). Calculated adcp.u/v/w from Beam or Instr data in adcp.velocity, used afforementioned heading/pitch/roll data for rotation. adcp.backscatter (relative volume backscattter) calculated from 0.45*adcp.intens + 20*log10(adcp.range) + 2*config.soundAbsorptionCoefficient*adcp.range, adcp.meanBackscatter calculated by beam-averaging the volume backscatter (accounting for dB scale). adcp.meanBackscatter and adcp.backscatter have units of relative dB. For information on the various processing steps applied, see https://wiki.oceannetworks.ca/display/DP/5. " ; :id = "BLANK" ; :date_created = "20240212T201626Z in QA" ; :time_coverage_start = "20110720T000000Z" ; :time_coverage_end = "20110720T235958Z" ; :device_id = 10604. ; :device_heading = 89. ; :platform_depth = 95. ; :site_name = "Deep_IP_2011-07" ; :device_name = "RDI Workhorse Monitor ADCP 300 kHz (15551)" ; :location_name = "Folger Passage" ; :search_id = NaN ; :firmware_version = 50. ; :firmware_revision = 40. ; :frequency = 300. ; :beam_pattern = "Convex" ; :orientation = "Up" ; :beam_angle = 20. ; :adcp_setup_CQ_sysPower = 255. ; :adcp_setup_TE_ensemble_interval_sec = 2. ; :adcp_setup_TP_time_ping_sec = 0. ; :adcp_setup_WA_false_target_threshold = 255. ; :adcp_setup_WB_system_bandwidth = 0. ; :adcp_setup_WC_correlation_threshold = 0. ; :adcp_setup_WE_error_threshold = 0. ; :adcp_setup_WE_blanking_distance_meters = 1.75 ; :adcp_setup_WG_percent_good_minimum = 0. ; :adcp_setup_WN_number_bins = 54. ; :adcp_setup_WP_number_pings = 1. ; :adcp_setup_WS_cell_size_meters = 2. ; :adcp_setup_WT_transmit_length = 2.2 ; }