AON 2016-18 BS3 Nortek 250 ADCP data (8/15/2020) ================================================ Format for SIG250 processed velocity data Matlab structure The ice velocity data were processed using 30 minute averaging interval. The ocean velocity data were originally processed using 60 minute averaging interval. In order to have a consistent sample interval, ocean velocity data were interpolated onto same 30 minute averaging interval as the ice velocity. The data below are therefore all on the same 30 minute interval. >> load AON16_BS3b_SIG250_allVel_Final1 >> whos Name Size Bytes Class Attributes sig 1x1 71888242 struct >> sig sig = struct with fields: settings: [1×1 struct] ice_vel: [1×1 struct] sensor: [1×1 struct] velocity: [1×1 struct] beam_prop: [1×1 struct] >> sig.settings ans = struct with fields: sn: 100392 : Serial number mooringID: 'BS3b' : Mooring ID cruiseID: 'AON16' : Cruise ID frequency: 250 : ADCP frequency Instrument_name: 'SIG250' : ADCP name Bins: 41 : Number of bins blank: 0.5000 : Blanking distance (m) bin_size: 4 : Bin size (m) MagDec: 17.3800 : Magnetic Declination (deg) MagCalOffsets: [-3.7610 12.4040 0] : Magnetometer Calibration Offsets YearDayOffset: 0.3292 : ADCP clock offset (days) Sig_TemperatureOffset: -0.2721 : ADCP temperature offset BBflag: 1 : Bin editting flag bblim: [3 24] : Bad bins EVflag: [1 1] : [Error velocity flag, cutoff cm/s] INTflag: 0 : Interpolation flag DEflag: 2 : Depth flag MCflag: 1 : Microcat flag VVflag: 1 : Vertical velocity flag VVLIM: [1 0.7; 25 0.4] : [Bin VV_limit] VERflag: 4 : Version flag BNMflag: 5 : Bin map flag time_inw: [2016 9 8 5 0 10.0010] : First good time time_outw: [2018 4 26 22 23 31] : Last good time position: [71 23.6610 -152 -3.0400] : Mooring position start_orientation: 'up' : ADCP orientation >> sig.sensor ans = struct with fields: datenumT: [28612×1 double] : Matlab datenum time: [28612×6 double] : Date [yr mo day hr min sec] days: [28612×1 double] : Year day (Jan 1 noon = 1.5) tr_depth: [28612×1 double] : Transducer depth Sig_Temperature: [28612×1 single] : SIG water temperature Sig_CorrectedTemperature: [28612×1 single] : SIG water temperature (corrected) MagX: [28612×1 single] : Magnetometer (X component) MagY: [28612×1 single] : Magnetometer (Y component) MagZ: [28612×1 single] : Magnetometer (Z component) MagMag: [28612×1 single] : Magnetomer magnitude AccX: [28612×1 single] : Accelerometer (X component) AccY: [28612×1 single] : Accelerometer (Y component) AccZ: [28612×1 single] : Accelerometer (Z component) AccMag: [28612×1 single] : Accelerometer magnitude Ambiguity: [28612×1 single] : Ambiguity velocity (m/s) pitch: [28612×1 single] : ADCP pitch (deg) roll: [28612×1 single] : ADCP roll (deg) heading: [28612×1 single] : ADCP heading Corrected_heading: [28612×1 single] : ADCP corrected heading (added MAG offsets) soundV: [28612×1 single] : ADCP speed of sound Sig_press: [28612×1 double] : ADCP pressure dz: [30×1 single] : Depth of bins relative to tr_depth orient: [28612×1 double] : ADCP orientation (1=down, -1=up) MC_PracticalSalinity: [28612×1 double] : MC Sal projected on SIG time MC_AbsoluteSalinity: [28612×1 double] : MC Sal projected on SIG time MC_Temperature: [28612×1 double] : MC Temp projected on SIG time MC_Pressure: [28612×1 double] : MC Pressure projected on SIG time MC_Depth: [28612×1 double] : MC Depth projected on SIG time MC_SpeedOfSound: [28612×1 double] : MC SS projected on SIG time >> sig.velocity ans = struct with fields: u: [30×28612 single] : U component of ocean velocity v: [30×28612 single] : V component of ocean velocity Speed: [30×28612 single] : Speed of ocean velocity Dir: [30×28612 single] : Direction of ocean velocity w1: [30×28612 single] : 1st vertical component of ocean velocity w2: [30×28612 single] : 2nd vertical component of ocean velocity e: [30×28612 single] : Error velocity component of ocean velocity Mask: [30×28612 single] : Data Mask depth: [30×28612 double] : Corrected Depth of center of each bin >> sig.ice_vel ans = struct with fields: u: [28612×1 double] : U component of ice velocity v: [28612×1 double] : V component of ice velocity Speed: [28612×1 double] : Speed of ice velocity Dir: [28612×1 double] : Direction of ice velocity >> sig.beam_prop ans = struct with fields: echo1: [30×28612 single] : Beam 1 Echo Amplitude echo2: [30×28612 single] : Beam 2 Echo Amplitude echo3: [30×28612 single] : Beam 3 Echo Amplitude echo4: [30×28612 single] : Beam 4 Echo Amplitude corr1: [30×28612 single] : Beam 1 Correlation corr2: [30×28612 single] : Beam 2 Correlation corr3: [30×28612 single] : Beam 3 Correlation corr4: [30×28612 single] : Beam 4 Correlation pg: [30×28612 single]