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Dataset Title:	CTD data from a SBE16 at OBSEA (full sensor data)
Institution:	Universitat Politècnica de Catalunya   (Dataset ID: OBSEA_SBE16_CTD_full)
Information:	Summary | License | Metadata | Background | Files | Make a graph

 

Variable	Optional Constraint #1		Optional Constraint #2		Minimum	Maximum
time (Date/Time, UTC)	!= =~ <= >= = < >		!= =~ <= >= = < >		2010-03-12T09:29:55Z	2023-06-29T06:35:46Z
SVEL (meters per second)	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0	1541.674
SVEL_qc (SVEL quality control flag)	!= =~ <= >= = < >		!= =~ <= >= = < >		1	4
PSAL (Dimensionless)	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0	38.7317
PSAL_qc (PSAL quality control flag)	!= =~ <= >= = < >		!= =~ <= >= = < >		1	4
CNDC (siemens per metre)	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0	6.08316
CNDC_qc (CNDC quality control flag)	!= =~ <= >= = < >		!= =~ <= >= = < >		1	4
PRES (sea_water_pressure, Decibars)	!= =~ <= >= = < >		!= =~ <= >= = < >		-187.471	22.0
PRES_qc (PRES quality control flag)	!= =~ <= >= = < >		!= =~ <= >= = < >		1	4
TEMP (degrees Celsius)	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0	28.0417
TEMP_qc (TEMP quality control flag)	!= =~ <= >= = < >		!= =~ <= >= = < >		1	4

 

Server-side Functions

distinct()

orderBy orderByClosest orderByCount orderByLimit orderByMax orderByMin orderByMinMax orderByMean orderBySum (" time SVEL SVEL_qc PSAL PSAL_qc CNDC CNDC_qc PRES PRES_qc TEMP TEMP_qc time SVEL SVEL_qc PSAL PSAL_qc CNDC CNDC_qc PRES PRES_qc TEMP TEMP_qc time SVEL SVEL_qc PSAL PSAL_qc CNDC CNDC_qc PRES PRES_qc TEMP TEMP_qc time SVEL SVEL_qc PSAL PSAL_qc CNDC CNDC_qc PRES PRES_qc TEMP TEMP_qc time SVEL SVEL_qc PSAL PSAL_qc CNDC CNDC_qc PRES PRES_qc TEMP TEMP_qc ")

File type: (more information) .asc - View OPeNDAP-style ISO-8859-1 comma-separated text. .csv - Download a ISO-8859-1 comma-separated text table (line 1: names; line 2: units; ISO 8601 times). .csvp - Download a ISO-8859-1 .csv file with line 1: name (units). Times are ISO 8601 strings. .csv0 - Download a ISO-8859-1 .csv file without column names or units. Times are ISO 8601 strings. .dataTable - A JSON file formatted for use with the Google Visualization client library (Google Charts). .das - View the dataset's metadata via an ISO-8859-1 OPeNDAP Dataset Attribute Structure (DAS). .dds - View the dataset's structure via an ISO-8859-1 OPeNDAP Dataset Descriptor Structure (DDS). .dods - OPeNDAP clients use this to download the data in the DODS binary format. .esriCsv - Download a ISO_8859_1 .csv file for ESRI's ArcGIS 9.x and below (separate date and time columns). .fgdc - View the dataset's UTF-8 FGDC .xml metadata. .geoJson - Download longitude,latitude,otherColumns data as a UTF-8 GeoJSON .json file. .graph - View a Make A Graph web page. .help - View a web page with a description of tabledap. .html - View an OPeNDAP-style HTML Data Access Form. .htmlTable - View a UTF-8 .html web page with the data in a table. Times are ISO 8601 strings. .iso19115 - View the dataset's ISO 19115-2/19139 UTF-8 .xml metadata. .itx - Download an ISO-8859-1 Igor Text File. Each response column becomes a wave. .json - View a table-like UTF-8 JSON file (missing value = 'null'; times are ISO 8601 strings). .jsonlCSV1 - View a UTF-8 JSON Lines CSV file with column names on line 1 (mv = 'null'; times are ISO 8601 strings). .jsonlCSV - View a UTF-8 JSON Lines CSV file without column names (mv = 'null'; times are ISO 8601 strings). .jsonlKVP - View a UTF-8 JSON Lines file with Key:Value pairs (missing value = 'null'; times are ISO 8601 strings). .mat - Download a MATLAB binary file. .nc - Download a flat, table-like, NetCDF-3 binary file with COARDS/CF/ACDD metadata. .ncHeader - View the UTF-8 header (the metadata) for the NetCDF-3 .nc file. .ncCF - Download a NetCDF-3 CF Discrete Sampling Geometries file (Contiguous Ragged Array). .ncCFHeader - View the UTF-8 header (the metadata) for the .ncCF file. .ncCFMA - Download a NetCDF-3 CF Discrete Sampling Geometries file (Multidimensional Array). .ncCFMAHeader - View the UTF-8 header (the metadata) for the .ncCFMA file. .nccsv - Download a NetCDF-3-like 7-bit ASCII NCCSV .csv file with COARDS/CF/ACDD metadata. .nccsvMetadata - View the dataset's metadata as the top half of a 7-bit ASCII NCCSV .csv file. .ncoJson - Download a UTF-8 NCO lvl=2 JSON file with COARDS/CF/ACDD metadata. .odvTxt - Download longitude,latitude,time,otherColumns as an ISO-8859-1 ODV Generic Spreadsheet File (.txt). .subset - View an HTML form which uses faceted search to simplify picking subsets of the data. .tsv - Download a ISO-8859-1 tab-separated text table (line 1: names; line 2: units; ISO 8601 times). .tsvp - Download a ISO-8859-1 .tsv file with line 1: name (units). Times are ISO 8601 strings. .tsv0 - Download a ISO-8859-1 .tsv file without column names or units. Times are ISO 8601 strings. .wav - Download a .wav audio file. All columns must be numeric and of the same type. .xhtml - View a UTF-8 XHTML (XML) file with the data in a table. Times are ISO 8601 strings. .kml - View a .kml file, suitable for Google Earth. .smallPdf - View a small .pdf image file with a graph or map. .pdf - View a standard, medium-sized .pdf image file with a graph or map. .largePdf - View a large .pdf image file with a graph or map. .smallPng - View a small .png image file with a graph or map. .png - View a standard, medium-sized .png image file with a graph or map. .largePng - View a large .png image file with a graph or map. .transparentPng - View a .png image file (just the data, without axes, landmask, or legend).

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.268386195e+9, 1.688020546e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "Date/Time";
    String source_name "Date/Time";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String time_precision "1970-01-01T00:00:00Z";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  SVEL {
    Float64 actual_range 0.0, 1541.674;
    String long_name "speed_of_sound_in_sea_water";
    String sdn_parameter "https://vocab.nerc.ac.uk/collection/P01/current/SVELCT01";
    String sdn_parameter_urn "SDN:P01::SVELCT01";
    String sdn_units "https://vocab.nerc.ac.uk/collection/P06/current/UVAA";
    String sdn_units_urn "SDN:P06::UVAA";
    String standard_name "speed_of_sound_in_sea_water";
    String units "meters per second";
  }
  SVEL_qc {
    Int32 actual_range 1, 4;
    String long_name "SVEL quality control flag";
  }
  PSAL {
    Float64 actual_range 0.0, 38.7317;
    String long_name "sea_water_salinity";
    String sdn_parameter "https://vocab.nerc.ac.uk/collection/P01/current/PSALST01";
    String sdn_parameter_urn "SDN:P01::PSALST01";
    String sdn_units "https://vocab.nerc.ac.uk/collection/P06/current/UUUU";
    String sdn_units_urn "SDN:P06::UUUU";
    String standard_name "sea_water_salinity";
    String units "Dimensionless";
  }
  PSAL_qc {
    Int32 actual_range 1, 4;
    String long_name "PSAL quality control flag";
  }
  CNDC {
    Float64 actual_range 0.0, 6.08316;
    String long_name "sea_water_electrical_conductivity";
    String sdn_parameter "https://vocab.nerc.ac.uk/collection/P01/current/CNDCST01";
    String sdn_parameter_urn "SDN:P01::CNDCST01";
    String sdn_units "https://vocab.nerc.ac.uk/collection/P06/current/UECA";
    String sdn_units_urn "SDN:P06::UECA";
    String standard_name "sea_water_electrical_conductivity";
    String units "siemens per metre";
  }
  CNDC_qc {
    Int32 actual_range 1, 4;
    String long_name "CNDC quality control flag";
  }
  PRES {
    Float64 actual_range -187.471, 22.0;
    String long_name "sea_water_pressure";
    String sdn_parameter "https://vocab.nerc.ac.uk/collection/P01/current/PRESPR01";
    String sdn_parameter_urn "SDN:P01::PRESPR01";
    String sdn_units "https://vocab.nerc.ac.uk/collection/P06/current/UPDB";
    String sdn_units_urn "SDN:P06::UPDB";
    String standard_name "sea_water_pressure";
    String units "Decibars";
  }
  PRES_qc {
    Int32 actual_range 1, 4;
    String long_name "PRES quality control flag";
  }
  TEMP {
    Float64 actual_range 0.0, 28.0417;
    String long_name "sea_water_temperature";
    String sdn_parameter "https://vocab.nerc.ac.uk/collection/P01/current/TEMPST01";
    String sdn_parameter_urn "SDN:P01::TEMPST01";
    String sdn_units "https://vocab.nerc.ac.uk/collection/P06/current/UPAA";
    String sdn_units_urn "SDN:P06::UPAA";
    String standard_name "sea_water_temperature";
    String units "degrees Celsius";
  }
  TEMP_qc {
    Int32 actual_range 1, 4;
    String long_name "TEMP quality control flag";
  }
 }
  NC_GLOBAL {
    String area "NW Mediterranean Sea";
    String author "Enoc Martinez";
    String cdm_data_type "Other";
    String contact "enoc.martinez@upc.edu";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String geospatial_lat_max "41.18212";
    String geospatial_lat_min "41.18212";
    String geospatial_lon_max "1.75257";
    String geospatial_lon_min "1.75257";
    String history 
"2024-11-21T12:53:31Z (local files)
2024-11-21T12:53:31Z https://data.obsea.es/erddap/tabledap/OBSEA_SBE16_CTD_full.html";
    String infoUrl "https://www.obsea.es";
    String institution "Universitat Politècnica de Catalunya";
    String institution_edmo_code "2150";
    String institution_references "https://www.obsea.es";
    String instrument_model "SBE 16 Plus V2";
    String license "Creative Commons Attribution 4.0 International (CC-BY-4.0)";
    String pi_name "Joaquín del Río";
    String platform_code "OBSEA";
    String processing_level "data acquired from sensor, quality control procedure applied following QARTOD guidelines";
    String quality_control_flags "1:good data, 2:QC not applied, 3:suspicious data, 4:bad data, 9:missing data";
    String quality_control_methods "QARTOD, https://ioos.noaa.gov/project/qartod";
    String sdn_instrument_type "SDN:L05::130";
    String sdn_instrument_urn "SDN:L22::TOOL0870";
    String sensor_depth "20.0";
    String site_code "OBSEA";
    String sourceUrl "(local files)";
    String standard_name_vocabulary "CF Standard Name Table v55";
    String summary "CTD data collected by a SBE16 deployed at OBSEA, full sensor data";
    String testOutOfDate "now-1day";
    String time_coverage_end "2023-06-29T06:35:46Z";
    String time_coverage_start "2010-03-12T09:29:55Z";
    String title "CTD data from a SBE16 at OBSEA (full sensor data)";
  }
}

 

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Using tabledap to Request Data and Graphs from Tabular Datasets

tabledap lets you request a data subset, a graph, or a map from a tabular dataset (for example, buoy data), via a specially formed URL. tabledap uses the OPeNDAP Data Access Protocol (DAP) and its selection constraints.

The URL specifies what you want: the dataset, a description of the graph or the subset of the data, and the file type for the response.

• (easy) You can get data by using the dataset's Data Access Form or Subset form. They make the URL for you.
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For example,
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/pmelTaoDySst.htmlTable?longitude,latitude,time,station,wmo_platform_code,T_25&time>=2015-05-23T12:00:00Z&time<=2015-05-31T12:00:00Z
Thus, the query is often a comma-separated list of desired variable names, followed by a collection of constraints (e.g., variable<value), each preceded by '&' (which is interpreted as "AND").

For details, see the tabledap Documentation.

 

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