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   set  data   graph     files  Lagrangian Drifter Laboratory at Scripps Institution of Oceanography EKAMSAT-ASTRAL DWSD
Sensor Data
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The Dataset's Variables and Attributes

Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL acknowledgement String Centurioni, Luca R. and Schönau, Martha C. (2025): Lagrangian Drifter Laboratory at Scripps Institution of Oceanography Directional Wave Spectra Drifter (DWSD) EKAMSAT-ASTRAL Sensor Data. Lagrangian Drifter Laboratory, Scripps Institution of Oceanography. Dataset. https://doi.org/10.57969/S9V880
attribute NC_GLOBAL cdm_data_type String Point
attribute NC_GLOBAL Conventions String COARDS, CF-1.10, ACDD-1.3
attribute NC_GLOBAL creator_country String USA
attribute NC_GLOBAL creator_institution String UCSD SIO
attribute NC_GLOBAL creator_name String LDL
attribute NC_GLOBAL creator_sector String academic
attribute NC_GLOBAL creator_type String group
attribute NC_GLOBAL creator_url String https://ldl.ucsd.edu/ (external link)
attribute NC_GLOBAL Easternmost_Easting double 98.70211
attribute NC_GLOBAL featureType String Point
attribute NC_GLOBAL geospatial_lat_max double 18.63614
attribute NC_GLOBAL geospatial_lat_min double 3.687753
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double 98.70211
attribute NC_GLOBAL geospatial_lon_min double 74.58536
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL id String LDL_SENSOR_300534061902790.nc
attribute NC_GLOBAL infoUrl String https://gdp.ucsd.edu/ldl/ (external link)
attribute NC_GLOBAL institution String UCSD SIO
attribute NC_GLOBAL keywords String 0.006f, 0.006f-4, above, aggregate, aggregate_quality_flag, aggregate_wave_quality_flag, astral, average, average_period, bands, california, certainty, change, cumulative, data, degrees, deigo, density, deviations, direction, dominant_direction, domwavedir, domwaveperiod, dwsbd, earth, Earth Science > Oceans > Ocean Temperature > Sea Surface Temperature, Earth Science > Oceans > Ocean Waves > Significant Wave Height, Earth Science > Oceans > Ocean Waves > Wave Period, Earth Science > Oceans > Ocean Waves > Wave Spectra, east, ekamsat, ekamsat-astral, file, filter, first, flag, flags, frequency, geostationary, global, gps, gradient, gts, hdop, height, hour, hs-, humidity, identifier, imei, institution, iridium, lagrangian drifter laboratory, latitude, ldl, leading, less, longitude, low, low-power, m2/hz, maximum, mean, median, meteorological, meteorology, meteosat, mode, more, north, not, observation, ocean, Ocean Waves > Swells, Ocean Waves > Wave Period, oceanography, oceans, one, only, peak_period, percent, period, platform, platform_id, point, positioning, power, quality, quality_flag, recorded, reporting, retry, rssi, san, satellite, science, scripps, sea, sea_surface_swell_wave_period, sea_surface_temperature, sea_surface_wave_direction_at_variance_spectral_density_maximum, sea_surface_wave_mean_period, sea_surface_wave_period_at_variance_spectral_density_maximum, sea_surface_wave_significant_height, sea_surface_wave_to_direction, seawater, second, segment, sensor, significant, significant_wave_height, sigwaveht, sio, spectra, spectral, spiking, sst, standard, statistics, status, sum, surface, surface waves, swell, swells, system, telecommunications, temperature, than, third, three, three-point, time, timestamp, ucsd, university, value, variance, water, wave, wave speed/direction, wave_qcflag1, wave_qcflag10, wave_qcflag11, wave_qcflag12, wave_qcflag2, wave_qcflag3, wave_qcflag4, wave_qcflag5, wave_qcflag6, wave_qcflag7, wave_qcflag8, wave_qcflag9, waves
attribute NC_GLOBAL keywords_vocabulary String GCMD Science Keywords
attribute NC_GLOBAL license String Copyright Notice This data is Copyright © 2024 The Regents of the University of California. All Rights Reserved. Permission to copy, modify, and distribute this data and its documentation for educational, research and non-profit purposes, without fee, and without a written agreement is hereby granted, provided that the above copyright notice, this paragraph and the following three paragraphs appear in all copies. Permission to make commercial use of this data may be obtained by contacting: Office of Innovation and Commercialization 9500 Gilman Drive, Mail Code 0910 University of California La Jolla, CA 92093-0910 innovation@ucsd.edu  This data and documentation are copyrighted by The Regents of the University of California. The data and documentation are supplied “as is”, without any accompanying services from The Regents. The Regents does not warrant that the operation of the program will be uninterrupted or error-free. The end-user understands that the program was developed for research purposes and is advised not to rely exclusively on the program for any reason. IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF THIS DATA AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE DATA PROVIDED HEREUNDER IS ON AN “AS IS” BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
attribute NC_GLOBAL Northernmost_Northing double 18.63614
attribute NC_GLOBAL publisher_email String ldl_drifter [at] ucsd [dot] edu
attribute NC_GLOBAL publisher_institution String UCSD SIO
attribute NC_GLOBAL publisher_name String Lagrangian Drifter Laboratory (LDL)
attribute NC_GLOBAL publisher_type String group
attribute NC_GLOBAL reference_doi String https://doi.org/10.57969/S9V880 (external link)
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL Southernmost_Northing double 3.687753
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v70
attribute NC_GLOBAL subsetVariables String platform_ID
attribute NC_GLOBAL summary String EKAMSAT-ASTRAL DWSD: Sensor data from Directional Wave Spectra Drifters (DWSD).
attribute NC_GLOBAL time_coverage_end String 2024-12-28T21:00:00Z
attribute NC_GLOBAL time_coverage_start String 2024-05-19T06:23:00Z
attribute NC_GLOBAL title String Lagrangian Drifter Laboratory at Scripps Institution of Oceanography EKAMSAT-ASTRAL DWSD Sensor Data
attribute NC_GLOBAL Westernmost_Easting double 74.58536
variable platform_ID   long  
attribute platform_ID _FillValue long 9223372036854775807
attribute platform_ID actual_range long 300234068545320, 300534061902790
attribute platform_ID ioos_category String Identifier
attribute platform_ID long_name String Platform Id
attribute platform_ID standard_name String platform_id
variable latitude   float  
attribute latitude _CoordinateAxisType String Lat
attribute latitude actual_range float 3.687753, 18.63614
attribute latitude axis String Y
attribute latitude colorBarMaximum double 90.0
attribute latitude colorBarMinimum double -90.0
attribute latitude ioos_category String Location
attribute latitude long_name String degrees north
attribute latitude standard_name String latitude
attribute latitude units String degrees_north
variable longitude   float  
attribute longitude _CoordinateAxisType String Lon
attribute longitude actual_range float 74.58536, 98.70211
attribute longitude axis String X
attribute longitude colorBarMaximum double 180.0
attribute longitude colorBarMinimum double -180.0
attribute longitude ioos_category String Location
attribute longitude long_name String degrees east
attribute longitude standard_name String longitude
attribute longitude units String degrees_east
variable time   double  
attribute time _CoordinateAxisType String Time
attribute time actual_range double 1.716099779999998E9, 1.7354196E9
attribute time axis String T
attribute time ioos_category String Time
attribute time long_name String Time
attribute time standard_name String time
attribute time time_origin String 01-JAN-1970 00:00:00
attribute time units String seconds since 1970-01-01T00:00:00Z
variable significant_wave_height   float  
attribute significant_wave_height _FillValue float -999.0
attribute significant_wave_height actual_range float 0.0, 4.89
attribute significant_wave_height colorBarMaximum double 10.0
attribute significant_wave_height colorBarMinimum double 0.0
attribute significant_wave_height ioos_category String Surface Waves
attribute significant_wave_height long_name String Significant Wave Height
attribute significant_wave_height missing_value float -999.0
attribute significant_wave_height standard_name String sea_surface_wave_significant_height
attribute significant_wave_height units String m
variable sea_surface_temperature   float  
attribute sea_surface_temperature actual_range float -5.0, 35.94
attribute sea_surface_temperature colorBarMaximum double 32.0
attribute sea_surface_temperature colorBarMinimum double 0.0
attribute sea_surface_temperature ioos_category String Temperature
attribute sea_surface_temperature long_name String Sea Surface Temperature
attribute sea_surface_temperature missing_value float -999.0
attribute sea_surface_temperature short_name String SST
attribute sea_surface_temperature standard_name String sea_surface_temperature
attribute sea_surface_temperature units String degree_C
variable average_period   float  
attribute average_period _FillValue float -999.0
attribute average_period actual_range float 0.0, 12.25
attribute average_period colorBarMaximum double 20.0
attribute average_period colorBarMinimum double 0.0
attribute average_period ioos_category String Surface Waves
attribute average_period long_name String Sea Surface Wave Mean Period
attribute average_period missing_value float -999.0
attribute average_period short_name String Ta
attribute average_period standard_name String sea_surface_wave_mean_period
attribute average_period units String s
variable peak_period   float  
attribute peak_period _FillValue float -999.0
attribute peak_period actual_range float 0.0, 32.0
attribute peak_period colorBarMaximum double 50.0
attribute peak_period colorBarMinimum double 0.0
attribute peak_period ioos_category String Statistics
attribute peak_period long_name String Sea Surface Wave Period At Variance Spectral Density Maximum
attribute peak_period missing_value float -999.0
attribute peak_period short_name String Tp
attribute peak_period standard_name String sea_surface_wave_period_at_variance_spectral_density_maximum
attribute peak_period units String s
variable dominant_direction   float  
attribute dominant_direction _FillValue float -999.0
attribute dominant_direction actual_range float 0.0, 32.0
attribute dominant_direction colorBarMaximum double 50.0
attribute dominant_direction colorBarMinimum double 0.0
attribute dominant_direction ioos_category String Statistics
attribute dominant_direction long_name String Sea Surface Wave Direction At Variance Spectral Density Maximum
attribute dominant_direction missing_value float -999.0
attribute dominant_direction short_name String Dd
attribute dominant_direction standard_name String sea_surface_wave_direction_at_variance_spectral_density_maximum
attribute dominant_direction units String degrees clockwise from north, waves coming from
variable aggregate_wave_quality_flag   float  
attribute aggregate_wave_quality_flag _FillValue float -999.0
attribute aggregate_wave_quality_flag actual_range float 0.0, 8.0
attribute aggregate_wave_quality_flag colorBarMaximum double 150.0
attribute aggregate_wave_quality_flag colorBarMinimum double 0.0
attribute aggregate_wave_quality_flag ioos_category String Quality
attribute aggregate_wave_quality_flag long_name String cumulative sum of quality flags for wave observation
attribute aggregate_wave_quality_flag missing_value float -999.0
attribute aggregate_wave_quality_flag short_name String wave_qc
attribute aggregate_wave_quality_flag standard_name String aggregate_quality_flag
attribute aggregate_wave_quality_flag units String 0 (no flags - good) to 12 (all flags - bad)
variable wave_qcflag1   float  
attribute wave_qcflag1 _FillValue float -999.0
attribute wave_qcflag1 actual_range float 0.0, 1.0
attribute wave_qcflag1 colorBarMaximum double 0.1
attribute wave_qcflag1 colorBarMinimum double 0.0
attribute wave_qcflag1 ioos_category String Statistics
attribute wave_qcflag1 long_name String quality flag for significant wave height (Hs) > 4 standard deviations from mean(Hs)
attribute wave_qcflag1 missing_value float -999.0
attribute wave_qcflag1 short_name String quality flag for large Hs
attribute wave_qcflag1 standard_name String quality_flag
attribute wave_qcflag1 units String 0 (false) or 1 (true)
variable wave_qcflag2   float  
attribute wave_qcflag2 _FillValue float -999.0
attribute wave_qcflag2 actual_range float 0.0, 1.0
attribute wave_qcflag2 colorBarMaximum double 0.1
attribute wave_qcflag2 colorBarMinimum double 0.0
attribute wave_qcflag2 ioos_category String Statistics
attribute wave_qcflag2 long_name String quality flag for average period (Ta) > 4 standard deviations from mean(Ta)
attribute wave_qcflag2 missing_value float -999.0
attribute wave_qcflag2 short_name String quality flag for large Ta
attribute wave_qcflag2 standard_name String quality_flag
attribute wave_qcflag2 units String 0 (false) or 1 (true)
variable wave_qcflag3   float  
attribute wave_qcflag3 _FillValue float -999.0
attribute wave_qcflag3 actual_range float 0.0, 1.0
attribute wave_qcflag3 colorBarMaximum double 0.1
attribute wave_qcflag3 colorBarMinimum double 0.0
attribute wave_qcflag3 ioos_category String Statistics
attribute wave_qcflag3 long_name String quality flag for spiking significant wave height (Hs-(three-point median filter of Hs) > 4 standard deviations
attribute wave_qcflag3 missing_value float -999.0
attribute wave_qcflag3 short_name String quality flag for spiking Hs
attribute wave_qcflag3 standard_name String quality_flag
attribute wave_qcflag3 units String 0 (false) or 1 (true)
variable wave_qcflag4   float  
attribute wave_qcflag4 _FillValue float -999.0
attribute wave_qcflag4 actual_range float 0.0, 1.0
attribute wave_qcflag4 colorBarMaximum double 0.1
attribute wave_qcflag4 colorBarMinimum double 0.0
attribute wave_qcflag4 ioos_category String Statistics
attribute wave_qcflag4 long_name String quality flag for first value of a0 > 4 standard deviations from mean of first value a0
attribute wave_qcflag4 missing_value float -999.0
attribute wave_qcflag4 short_name String quality flag for large a0(1)
attribute wave_qcflag4 standard_name String quality_flag
attribute wave_qcflag4 units String 0 (false) or 1 (true)
variable wave_qcflag5   float  
attribute wave_qcflag5 _FillValue float -999.0
attribute wave_qcflag5 actual_range float 0.0, 1.0
attribute wave_qcflag5 colorBarMaximum double 0.1
attribute wave_qcflag5 colorBarMinimum double 0.0
attribute wave_qcflag5 ioos_category String Statistics
attribute wave_qcflag5 long_name String quality flag for second value of a0 > 4 standard deviations from mean of second value a0
attribute wave_qcflag5 missing_value float -999.0
attribute wave_qcflag5 short_name String quality flag for large a0(2)
attribute wave_qcflag5 standard_name String quality_flag
attribute wave_qcflag5 units String 0 (false) or 1 (true)
variable wave_qcflag6   float  
attribute wave_qcflag6 _FillValue float -999.0
attribute wave_qcflag6 actual_range float 0.0, 1.0
attribute wave_qcflag6 colorBarMaximum double 0.1
attribute wave_qcflag6 colorBarMinimum double 0.0
attribute wave_qcflag6 ioos_category String Statistics
attribute wave_qcflag6 long_name String quality flag for third value of a0 > 4 standard deviations from mean of third value a0
attribute wave_qcflag6 missing_value float -999.0
attribute wave_qcflag6 short_name String quality flag for large a0(3)
attribute wave_qcflag6 standard_name String quality_flag
attribute wave_qcflag6 units String 0 (false) or 1 (true)
variable wave_qcflag7   float  
attribute wave_qcflag7 _FillValue float -999.0
attribute wave_qcflag7 actual_range float 0.0, 1.0
attribute wave_qcflag7 colorBarMaximum double 0.1
attribute wave_qcflag7 colorBarMinimum double 0.0
attribute wave_qcflag7 ioos_category String Statistics
attribute wave_qcflag7 long_name String quality flag for gradient a0(1) to a0(2) > 4 standard deviations from mean(gradient a0(1) to a0(2))
attribute wave_qcflag7 missing_value float -999.0
attribute wave_qcflag7 short_name String quality flag for large a0(1) to a0(2) gradient
attribute wave_qcflag7 standard_name String quality_flag
attribute wave_qcflag7 units String 0 (false) or 1 (true)
variable wave_qcflag8   float  
attribute wave_qcflag8 _FillValue float -999.0
attribute wave_qcflag8 actual_range float 0.0, 1.0
attribute wave_qcflag8 colorBarMaximum double 0.1
attribute wave_qcflag8 colorBarMinimum double 0.0
attribute wave_qcflag8 ioos_category String Statistics
attribute wave_qcflag8 long_name String quality flag for gradient a0(2) to a0(3) > 4 standard deviations from mean(gradient a0(2) to a0(3))
attribute wave_qcflag8 missing_value float -999.0
attribute wave_qcflag8 short_name String quality flag for large a0(2) to a0(3) gradient
attribute wave_qcflag8 standard_name String quality_flag
attribute wave_qcflag8 units String 0 (false) or 1 (true)
variable wave_qcflag9   float  
attribute wave_qcflag9 _FillValue float -999.0
attribute wave_qcflag9 actual_range float 0.0, 1.0
attribute wave_qcflag9 colorBarMaximum double 0.1
attribute wave_qcflag9 colorBarMinimum double 0.0
attribute wave_qcflag9 ioos_category String Statistics
attribute wave_qcflag9 long_name String quality flag for gradient a0(3) to a0(4) > 4 standard deviations from mean(gradient a0(3) to a0(4))
attribute wave_qcflag9 missing_value float -999.0
attribute wave_qcflag9 short_name String quality flag for large a0(3) to a0(4) gradient
attribute wave_qcflag9 standard_name String quality_flag
attribute wave_qcflag9 units String 0 (false) or 1 (true)
variable wave_qcflag10   float  
attribute wave_qcflag10 _FillValue float -999.0
attribute wave_qcflag10 actual_range float 0.0, 1.0
attribute wave_qcflag10 colorBarMaximum double 150.0
attribute wave_qcflag10 colorBarMinimum double 0.0
attribute wave_qcflag10 ioos_category String Quality
attribute wave_qcflag10 long_name String quality flag for less than 95% of data reporting
attribute wave_qcflag10 missing_value float -999.0
attribute wave_qcflag10 short_name String quality flag for missing data
attribute wave_qcflag10 standard_name String quality_flag
attribute wave_qcflag10 units String 0 (false) or 1 (true)
variable wave_qcflag11   float  
attribute wave_qcflag11 _FillValue float -999.0
attribute wave_qcflag11 actual_range float 0.0, 1.0
attribute wave_qcflag11 colorBarMaximum double 150.0
attribute wave_qcflag11 colorBarMinimum double 0.0
attribute wave_qcflag11 ioos_category String Quality
attribute wave_qcflag11 long_name String quality flag for spectral wave density: frequency bands above 0.08 Hz do not change more 0.006f-4 m2/Hz in one hour
attribute wave_qcflag11 missing_value float -999.0
attribute wave_qcflag11 short_name String quality flag for spectral continuity
attribute wave_qcflag11 standard_name String quality_flag
attribute wave_qcflag11 units String 0 (false) or 1 (true)
variable wave_qcflag12   float  
attribute wave_qcflag12 _FillValue float -999.0
attribute wave_qcflag12 actual_range float 0.0, 1.0
attribute wave_qcflag12 colorBarMaximum double 150.0
attribute wave_qcflag12 colorBarMinimum double 0.0
attribute wave_qcflag12 ioos_category String Quality
attribute wave_qcflag12 long_name String quality flag for low-power mode: only one segment recorded leading to low spectra certainty
attribute wave_qcflag12 missing_value float -999.0
attribute wave_qcflag12 short_name String quality flag for low-power mode
attribute wave_qcflag12 standard_name String quality_flag
attribute wave_qcflag12 units String 0 (false) or 1 (true)

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.


 
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