| netcdf_version: | 4 |
| Conventions: | CF-1.6 |
| date_created: | 2025-10-20T22:10:04Z |
| date_update: | 2025-10-20T22:10:04Z |
| date_modified: | 2025-10-20T22:10:04Z |
| featureType: | trajectory |
| time_coverage_start: | 2018-02-14T17:45:06.000000000 |
| time_coverage_end: | 2018-02-14T22:33:55.000000000 |
| time_coverage_duration: | 0 days 04:48:49 |
| geospatial_vertical_min: | -0.7139265368818738 |
| geospatial_vertical_max: | 1001.226619653025 |
| geospatial_lat_min: | 36.69634743647040 |
| geospatial_lat_max: | 36.73309625299224 |
| geospatial_lon_min: | -122.0581774346869 |
| geospatial_lon_max: | -122.0363441994003 |
| license: | Any use requires prior approval from MBARI |
| history: | Created by /src/data/process_i2map.py -v --noinput --start_year 2018 --end_year 2018 --start_yd 1 --end_yd 365 --num_cores 1 --clobber on 2025-10-20T22:10:05Z |
| source: | MBARI Dorado-class AUV data produced from original log files with execution of '/src/data/process_i2map.py -v --noinput --start_year 2018 --end_year 2018 --start_yd 1 --end_yd 365 --num_cores 1 --clobber' at 2025-10-20T22:10:05Z on host 6ad284762e9a using git commit 0620a5fb4ce4e316a856ffc6c98fde365d0ce9eb from software at 'https://github.com/mbari-org/auv-python' |
| summary: | Observational oceanographic data obtained from an Autonomous Underwater Vehicle mission with measurements sampled at 1S intervals. Data processed at 2025-10-20T22:10:05Z using MBARI's auv-python software. Original log files copied from /Volumes/M3/master/i2MAP/2018/02/20180214/2018.045.03. Processing log file: http://dods.mbari.org/opendap/data/auvctd/surveys/2018/netcdf/i2map_2018.045.03_processing.log |
| title: | Calibrated, aligned, and resampled AUV sensor data from i2map mission 2018.045.03, original data in /mbari/M3/master/i2MAP/: 2018/02/20180214/2018.045.03 |
| comment: | Variable depth pitch corrected using SensorOffset(x=4.04, y=0.0) |
| time: | Array of 32 bit Integers [time = 0..17329] standard_name: time long_name: Time (UTC) units: seconds since 2018-02-14 17:45:06 calendar: proleptic_gregorian |
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| depth: | Grid _FillValue: NaN long_name: Depth standard_name: depth units: m comment: mDepth from navigation.nc. mDepth from navigation.nc mean sampled at 1S intervals following 3 point median filter. instrument_sample_rate_hz: 5.000000000000000
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| latitude: | Grid _FillValue: NaN long_name: Latitude standard_name: latitude units: degrees_north comment: Dead reckoned latitude nudged to GPS positions. Variable nudged_latitude from i2map_2018.045.03_cal.nc file linearly interpolated onto navigation time values. Variable navigation_latitude from i2map_2018.045.03_align.nc median filtered with 3 samples and resampled with .mean() aggregator to 1S intervals. instrument_sample_rate_hz: 5.000000000000000
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| longitude: | Grid _FillValue: NaN long_name: Longitude standard_name: longitude units: degrees_east comment: Dead reckoned longitude nudged to GPS positions. Variable nudged_longitude from i2map_2018.045.03_cal.nc file linearly interpolated onto navigation time values. Variable navigation_longitude from i2map_2018.045.03_align.nc median filtered with 3 samples and resampled with .mean() aggregator to 1S intervals. instrument_sample_rate_hz: 5.000000000000000
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| profile_number: | Grid long_name: Profile number
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| navigation_roll: | Grid _FillValue: NaN long_name: Vehicle roll standard_name: platform_roll_angle units: degree comment: mPhi from navigation.nc median filtered with 3 samples and resampled with .mean() aggregator to 1S intervals. instrument_sample_rate_hz: 5.000000000000000 coordinates: time depth latitude longitude
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| navigation_pitch: | Grid _FillValue: NaN long_name: Vehicle pitch standard_name: platform_pitch_angle units: degree comment: mTheta from navigation.nc median filtered with 3 samples and resampled with .mean() aggregator to 1S intervals. instrument_sample_rate_hz: 5.000000000000000 coordinates: time depth latitude longitude
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| navigation_yaw: | Grid _FillValue: NaN long_name: Vehicle yaw standard_name: platform_yaw_angle units: degree comment: mPsi from navigation.nc median filtered with 3 samples and resampled with .mean() aggregator to 1S intervals. instrument_sample_rate_hz: 5.000000000000000 coordinates: time depth latitude longitude
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| navigation_mWaterSpeed: | Grid _FillValue: NaN long_name: Current speed based upon DVL data standard_name: platform_speed_wrt_sea_water units: m/s comment: mWaterSpeed from navigation.nc median filtered with 3 samples and resampled with .mean() aggregator to 1S intervals. instrument_sample_rate_hz: 5.000000000000000 coordinates: time depth latitude longitude
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| seabird25p_temperature: | Grid _FillValue: NaN long_name: Temperature standard_name: sea_water_temperature units: degree_Celsius comment: Derived from temp_frequency from seabird25p.nc via calibration parms: {'t_coefs': 'G', 'c_coefs': 'G', 't_a': 0.0036812134, 't_b': 0.000604232699, 't_c': 1.6552789e-05, 't_d': 2.24436549e-06, 't_f0': 3304.265, 't_g': 0.00430846337, 't_h': 0.000627537193, 't_i': 1.86810579e-05, 't_j': 1.19438114e-06, 't_gf0': 1000.0, 'c_a': 1.220927e-06, 'c_b': 0.457213632, 'c_c': -4.12470337, 'c_d': -7.81556063e-05, 'c_m': 5.2, 'eps': -9.57e-08, 'c_g': -9.93595143, 'c_h': 1.35024429, 'c_i': -0.0029417569, 'c_j': 0.000272103781, 'c_pcor': -9.57e-08, 'c_tcor': 3.25e-06, 'SOc': 0.3937, 'BOc': 0.0, 'Voff': -0.53, 'TCor': -0.0, 'PCor': 0.000135, 'ScaleFactor': 50.0, 'DarkCounts': 0.047} median filtered with 3 samples and resampled with .mean() aggregator to 1S intervals. instrument_sample_rate_hz: 7.990000000000000 coordinates: time depth latitude longitude
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| seabird25p_conductivity: | Grid _FillValue: NaN long_name: Conductivity standard_name: sea_water_conductivity units: Siemens/meter comment: Derived from cond_frequency from seabird25p.nc via calibration parms: {'t_coefs': 'G', 'c_coefs': 'G', 't_a': 0.0036812134, 't_b': 0.000604232699, 't_c': 1.6552789e-05, 't_d': 2.24436549e-06, 't_f0': 3304.265, 't_g': 0.00430846337, 't_h': 0.000627537193, 't_i': 1.86810579e-05, 't_j': 1.19438114e-06, 't_gf0': 1000.0, 'c_a': 1.220927e-06, 'c_b': 0.457213632, 'c_c': -4.12470337, 'c_d': -7.81556063e-05, 'c_m': 5.2, 'eps': -9.57e-08, 'c_g': -9.93595143, 'c_h': 1.35024429, 'c_i': -0.0029417569, 'c_j': 0.000272103781, 'c_pcor': -9.57e-08, 'c_tcor': 3.25e-06, 'SOc': 0.3937, 'BOc': 0.0, 'Voff': -0.53, 'TCor': -0.0, 'PCor': 0.000135, 'ScaleFactor': 50.0, 'DarkCounts': 0.047} median filtered with 3 samples and resampled with .mean() aggregator to 1S intervals. instrument_sample_rate_hz: 7.990000000000000 coordinates: time depth latitude longitude
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| seabird25p_salinity: | Grid _FillValue: NaN long_name: Salinity standard_name: sea_water_salinity units: comment: Derived from cond_frequency from seabird25p.nc via calibration parms: {'t_coefs': 'G', 'c_coefs': 'G', 't_a': 0.0036812134, 't_b': 0.000604232699, 't_c': 1.6552789e-05, 't_d': 2.24436549e-06, 't_f0': 3304.265, 't_g': 0.00430846337, 't_h': 0.000627537193, 't_i': 1.86810579e-05, 't_j': 1.19438114e-06, 't_gf0': 1000.0, 'c_a': 1.220927e-06, 'c_b': 0.457213632, 'c_c': -4.12470337, 'c_d': -7.81556063e-05, 'c_m': 5.2, 'eps': -9.57e-08, 'c_g': -9.93595143, 'c_h': 1.35024429, 'c_i': -0.0029417569, 'c_j': 0.000272103781, 'c_pcor': -9.57e-08, 'c_tcor': 3.25e-06, 'SOc': 0.3937, 'BOc': 0.0, 'Voff': -0.53, 'TCor': -0.0, 'PCor': 0.000135, 'ScaleFactor': 50.0, 'DarkCounts': 0.047} median filtered with 3 samples and resampled with .mean() aggregator to 1S intervals. instrument_sample_rate_hz: 7.990000000000000 coordinates: time depth latitude longitude
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| seabird25p_temperature_onboard: | Grid _FillValue: NaN long_name: Temperature computed onboard the vehicle units: degree_Celsius comment: Temperature computed onboard the vehicle from calibration parameters installed on the vehicle at the time of deployment. median filtered with 3 samples and resampled with .mean() aggregator to 1S intervals. instrument_sample_rate_hz: 7.990000000000000 coordinates: time depth latitude longitude
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| seabird25p_conductivity_onboard: | Grid _FillValue: NaN long_name: Conductivity computed onboard the vehicle units: Siemens/meter comment: Temperature computed onboard the vehicle from calibration parameters installed on the vehicle at the time of deployment. median filtered with 3 samples and resampled with .mean() aggregator to 1S intervals. instrument_sample_rate_hz: 7.990000000000000 coordinates: time depth latitude longitude
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| seabird25p_salinity_onboard: | Grid _FillValue: NaN long_name: Salinity computed onboard the vehicle units: comment: Salinity computed onboard the vehicle from calibration parameters installed on the vehicle at the time of deployment. median filtered with 3 samples and resampled with .mean() aggregator to 1S intervals. instrument_sample_rate_hz: 7.990000000000000 coordinates: time depth latitude longitude
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| seabird25p_dissolvedO2: | Grid _FillValue: NaN long_name: Dissolved Oxygen sensor units: Volts comment: Analog Voltage Channel 6 - to be converted to umol/kg median filtered with 3 samples and resampled with .mean() aggregator to 1S intervals. instrument_sample_rate_hz: 7.990000000000000 coordinates: time depth latitude longitude
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| seabird25p_oxygen_mll: | Grid _FillValue: NaN long_name: Dissolved Oxygen units: ml/l comment: Derived from dissolvedO2 from seabird25p.nc and eq 1 calibration coefficients {'Soc': 0.42595, 'offset': -0.5339, 'A': -0.0041113, 'B': 0.00020802, 'C': -3.0027e-06, 'D0': 2.5826, 'D1': 0.000192634, 'D2': -0.0464803, 'E': 0.036, 'Tau20': 1.09, 'H1': -0.033, 'H2': 5000.0, 'H3': 1450.0} from cal_file = '/Volumes/DMO/MDUC_CORE_CTD_200103/Calibration Files/SBE-43/2935/2022_Apr/Oxygen_SBE43_2935.xml' median filtered with 3 samples and resampled with .mean() aggregator to 1S intervals. instrument_sample_rate_hz: 7.990000000000000 coordinates: time depth latitude longitude
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| seabird25p_oxygen_umolkg: | Grid _FillValue: NaN long_name: Dissolved Oxygen units: umol/kg comment: Computed from oxygen_mll_ with 'np.multiply(o2_mll * 1.4276, (1.0e6 / (dens * 32)))' median filtered with 3 samples and resampled with .mean() aggregator to 1S intervals. instrument_sample_rate_hz: 7.990000000000000 coordinates: time depth latitude longitude
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| seabird25p_flow1: | Grid _FillValue: NaN long_name: Flow sensor on ctd1 units: Volts comment: flow1 from seabird25p.nc median filtered with 3 samples and resampled with .mean() aggregator to 1S intervals. instrument_sample_rate_hz: 7.990000000000000 coordinates: time depth latitude longitude
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| tailcone_propRpm: | Grid _FillValue: NaN long_name: Vehicle propeller speed units: rad/s comment: propRpm from tailCone.nc (convert to RPM by multiplying by 9.549297) median filtered with 3 samples and resampled with .mean() aggregator to 1S intervals. instrument_sample_rate_hz: 5.000000000000000 coordinates: time depth latitude longitude
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