ERDDAP > tabledap > Data Access Form

Dataset Title:	[CTD and in situ Sonde Lake Superior and Lake Erie 2021-2024] - CTD and in situ Sonde field data collected on Lake Superior and Lake Erie aboard the R/V Blue Heron and R/V Gibraltar III from May 2021 to May 2024 (Collaborative Research: Cyanobacteria, Nitrogen Cycling, and Export Production in the Laurentian Great Lakes)
Institution:	BCO-DMO   (Dataset ID: bcodmo_dataset_967649_v1)
Information:	Summary | License | FGDC | ISO 19115 | Metadata | Background | Files | Make a graph

 

Variable	Optional Constraint #1		Optional Constraint #2		Minimum	Maximum
Year_Month (unitless)	!= =~ <= >= = < >		!= =~ <= >= = < >		"2021-05"	"2024-05"
Date (unitless)	!= =~ <= >= = < >		!= =~ <= >= = < >		"2021-05-12"	"2023-10-11"
time (Iso_datetime_utc, UTC)	!= =~ <= >= = < >		!= =~ <= >= = < >		2021-05-12T23:12:51Z	2023-10-11T01:02:20Z
Lake (unitless)	!= =~ <= >= = < >		!= =~ <= >= = < >		"Erie"	"Superior"
Site (unitless)	!= =~ <= >= = < >		!= =~ <= >= = < >		"CAB"	"WM"
latitude (degrees_north)	!= =~ <= >= = < >		!= =~ <= >= = < >		41.63001	47.32494
longitude (degrees_east)	!= =~ <= >= = < >		!= =~ <= >= = < >		-91.11304	-81.63803
depth (m)	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0	181.0
Pressure_Digiquartz (Decible (db))	!= =~ <= >= = < >		!= =~ <= >= = < >		0.976	177.471
Temperature (Degrees C)	!= =~ <= >= = < >		!= =~ <= >= = < >		-0.2448	26.5404
Conductivity (MicroSiemens per centimeter (µS/cm))	!= =~ <= >= = < >		!= =~ <= >= = < >		55.11934	268.9439
Specific_Conductance (MicroSiemens per centimeter (µS/cm))	!= =~ <= >= = < >		!= =~ <= >= = < >		99.822	288.058
Salinity_Practical (Practical Salinity Unit (PSU))	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0432	8.17
Fluorescence_WET_Labs_WETstar (Milligram per meter cubed (mg/m3))	!= =~ <= >= = < >		!= =~ <= >= = < >		-0.2878	3.8599
Oxygen_SBE_43_mg_l (Milligram per liter (mg/L))	!= =~ <= >= = < >		!= =~ <= >= = < >		-2.9464	1287.412
Oxygen_SBE_43_pct_saturation (Percent (%))	!= =~ <= >= = < >		!= =~ <= >= = < >		-856.222	124.8
Fluorescence_WET_Labs_CDOM (Milligram per meter cubed (mg/m3))	!= =~ <= >= = < >		!= =~ <= >= = < >		-0.4216	2.0049
Beam_Transmission_WET_Labs_C_Star (Percent (%))	!= =~ <= >= = < >		!= =~ <= >= = < >		51.6473	97.216
PAR_Irradiance_Biospherical_Licor (µEinsteins/m2/s)	!= =~ <= >= = < >		!= =~ <= >= = < >		-3.1E-4	4180.0
Oxidation_Reduction_Potential (Millivolts (mV))	!= =~ <= >= = < >		!= =~ <= >= = < >		190.7566	340.0057
pH (pH scale)	!= =~ <= >= = < >		!= =~ <= >= = < >		6.825	13.77
Descent_Rate (Meters per second (m/s))	!= =~ <= >= = < >		!= =~ <= >= = < >		-0.238	0.957
Time_Elapsed (Seconds (s))	!= =~ <= >= = < >		!= =~ <= >= = < >		-0.574	517.492
Altimeter (Meters (m))	!= =~ <= >= = < >		!= =~ <= >= = < >		-20.42	103.71
Flag (unitless)	!= =~ <= >= = < >		!= =~ <= >= = < >		"0.0000e+00"	"0.00E+00"
Chlorophyll_a_ug_L (micrograms per liter (ug/L))	!= =~ <= >= = < >		!= =~ <= >= = < >		0.07	18.62
Chlorophyll_a_RFU (Relative Fluorescence Units (RFU))	!= =~ <= >= = < >		!= =~ <= >= = < >		0.05	10.2
Pressure_PSI (PSI)	!= =~ <= >= = < >		!= =~ <= >= = < >		1.35	25.56
Turbidity (Nephelometric Turbidity Unit (NTU))	!= =~ <= >= = < >		!= =~ <= >= = < >		-0.43	16.73
Phyco_RFU (Relative Fluorescence Units (RFU))	!= =~ <= >= = < >		!= =~ <= >= = < >		0.08	0.6

 

Server-side Functions

distinct()

orderBy orderByDescending orderByClosest orderByCount orderByLimit orderByMax orderByMin orderByMinMax orderByMean orderBySum (" Year_Month Date time Lake Site latitude longitude depth Pressure_Digiquartz Temperature Conductivity Specific_Conductance Salinity_Practical Fluorescence_WET_Labs_WETstar Oxygen_SBE_43_mg_l Oxygen_SBE_43_pct_saturation Fluorescence_WET_Labs_CDOM Beam_Transmission_WET_Labs_C_Star PAR_Irradiance_Biospherical_Licor Oxidation_Reduction_Potential pH Descent_Rate Time_Elapsed Altimeter Flag Chlorophyll_a_ug_L Chlorophyll_a_RFU Pressure_PSI Turbidity Phyco_RFU Year_Month Date time Lake Site latitude longitude depth Pressure_Digiquartz Temperature Conductivity Specific_Conductance Salinity_Practical Fluorescence_WET_Labs_WETstar Oxygen_SBE_43_mg_l Oxygen_SBE_43_pct_saturation Fluorescence_WET_Labs_CDOM Beam_Transmission_WET_Labs_C_Star PAR_Irradiance_Biospherical_Licor Oxidation_Reduction_Potential pH Descent_Rate Time_Elapsed Altimeter Flag Chlorophyll_a_ug_L Chlorophyll_a_RFU Pressure_PSI Turbidity Phyco_RFU Year_Month Date time Lake Site latitude longitude depth Pressure_Digiquartz Temperature Conductivity Specific_Conductance Salinity_Practical Fluorescence_WET_Labs_WETstar Oxygen_SBE_43_mg_l Oxygen_SBE_43_pct_saturation Fluorescence_WET_Labs_CDOM Beam_Transmission_WET_Labs_C_Star PAR_Irradiance_Biospherical_Licor Oxidation_Reduction_Potential pH Descent_Rate Time_Elapsed Altimeter Flag Chlorophyll_a_ug_L Chlorophyll_a_RFU Pressure_PSI Turbidity Phyco_RFU Year_Month Date time Lake Site latitude longitude depth Pressure_Digiquartz Temperature Conductivity Specific_Conductance Salinity_Practical Fluorescence_WET_Labs_WETstar Oxygen_SBE_43_mg_l Oxygen_SBE_43_pct_saturation Fluorescence_WET_Labs_CDOM Beam_Transmission_WET_Labs_C_Star PAR_Irradiance_Biospherical_Licor Oxidation_Reduction_Potential pH Descent_Rate Time_Elapsed Altimeter Flag Chlorophyll_a_ug_L Chlorophyll_a_RFU Pressure_PSI Turbidity Phyco_RFU Year_Month Date time Lake Site latitude longitude depth Pressure_Digiquartz Temperature Conductivity Specific_Conductance Salinity_Practical Fluorescence_WET_Labs_WETstar Oxygen_SBE_43_mg_l Oxygen_SBE_43_pct_saturation Fluorescence_WET_Labs_CDOM Beam_Transmission_WET_Labs_C_Star PAR_Irradiance_Biospherical_Licor Oxidation_Reduction_Potential pH Descent_Rate Time_Elapsed Altimeter Flag Chlorophyll_a_ug_L Chlorophyll_a_RFU Pressure_PSI Turbidity Phyco_RFU ")

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 {
  Year_Month {
    String long_name "Year_month";
    String units "unitless";
  }
  Date {
    String long_name "Date";
    String units "unitless";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.620861171e+9, 1.69698614e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "Iso_datetime_utc";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  Lake {
    String long_name "Lake";
    String units "unitless";
  }
  Site {
    String long_name "Site";
    String units "unitless";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range 41.63001, 47.32494;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range -91.11304, -81.63803;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Float32 actual_range 0.0, 181.0;
    String axis "Z";
    String ioos_category "Location";
    String long_name "Depth";
    String positive "down";
    String standard_name "depth";
    String units "m";
  }
  Pressure_Digiquartz {
    Float32 actual_range 0.976, 177.471;
    String long_name "Pressure_digiquartz";
    String units "Decible (db)";
  }
  Temperature {
    Float32 actual_range -0.2448, 26.5404;
    String long_name "Temperature";
    String units "Degrees C";
  }
  Conductivity {
    Float32 actual_range 55.11934, 268.9439;
    String long_name "Conductivity";
    String units "MicroSiemens per centimeter (µS/cm)";
  }
  Specific_Conductance {
    Float32 actual_range 99.822, 288.058;
    String long_name "Specific_conductance";
    String units "MicroSiemens per centimeter (µS/cm)";
  }
  Salinity_Practical {
    Float32 actual_range 0.0432, 8.17;
    String long_name "Salinity_practical";
    String units "Practical Salinity Unit (PSU)";
  }
  Fluorescence_WET_Labs_WETstar {
    Float32 actual_range -0.2878, 3.8599;
    String long_name "Fluorescence_wet_labs_wetstar";
    String units "Milligram per meter cubed (mg/m3)";
  }
  Oxygen_SBE_43_mg_l {
    Float32 actual_range -2.9464, 1287.412;
    String long_name "Oxygen_sbe_43_mg_l";
    String units "Milligram per liter (mg/L)";
  }
  Oxygen_SBE_43_pct_saturation {
    Float32 actual_range -856.222, 124.8;
    String long_name "Oxygen_sbe_43_pct_saturation";
    String units "Percent (%)";
  }
  Fluorescence_WET_Labs_CDOM {
    Float32 actual_range -0.4216, 2.0049;
    String long_name "Fluorescence_wet_labs_cdom";
    String units "Milligram per meter cubed (mg/m3)";
  }
  Beam_Transmission_WET_Labs_C_Star {
    Float32 actual_range 51.6473, 97.216;
    String long_name "Beam_transmission_wet_labs_c_star";
    String units "Percent (%)";
  }
  PAR_Irradiance_Biospherical_Licor {
    Float32 actual_range -3.1e-4, 4180.0;
    String long_name "Par_irradiance_biospherical_licor";
    String units "µEinsteins/m2/s";
  }
  Oxidation_Reduction_Potential {
    Float32 actual_range 190.7566, 340.0057;
    String long_name "Oxidation_reduction_potential";
    String units "Millivolts (mV)";
  }
  pH {
    Float32 actual_range 6.825, 13.77;
    String long_name "Ph";
    String units "pH scale";
  }
  Descent_Rate {
    Float32 actual_range -0.238, 0.957;
    String long_name "Descent_rate";
    String units "Meters per second (m/s)";
  }
  Time_Elapsed {
    Float32 actual_range -0.574, 517.492;
    String long_name "Time_elapsed";
    String units "Seconds (s)";
  }
  Altimeter {
    Float32 actual_range -20.42, 103.71;
    String long_name "Altimeter";
    String units "Meters (m)";
  }
  Flag {
    String long_name "Flag";
    String units "unitless";
  }
  Chlorophyll_a_ug_L {
    Float32 actual_range 0.07, 18.62;
    String long_name "Chlorophyll_a_ug_l";
    String units "micrograms per liter (ug/L)";
  }
  Chlorophyll_a_RFU {
    Float32 actual_range 0.05, 10.2;
    String long_name "Chlorophyll_a_rfu";
    String units "Relative Fluorescence Units (RFU)";
  }
  Pressure_PSI {
    Float32 actual_range 1.35, 25.56;
    String long_name "Pressure_psi";
    String units "PSI";
  }
  Turbidity {
    Float32 actual_range -0.43, 16.73;
    String long_name "Turbidity";
    String units "Nephelometric Turbidity Unit (NTU)";
  }
  Phyco_RFU {
    Float32 actual_range 0.08, 0.6;
    String long_name "Phyco_rfu";
    String units "Relative Fluorescence Units (RFU)";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Other";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_email "info@bco-dmo.org";
    String creator_name "BCO-DMO";
    String creator_url "https://www.bco-dmo.org/";
    String defaultDataQuery "&time<now";
    String doi "10.26008/1912/bco-dmo.967649.1";
    Float64 Easternmost_Easting -81.63803;
    Float64 geospatial_lat_max 47.32494;
    Float64 geospatial_lat_min 41.63001;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -81.63803;
    Float64 geospatial_lon_min -91.11304;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 181.0;
    Float64 geospatial_vertical_min 0.0;
    String geospatial_vertical_positive "down";
    String geospatial_vertical_units "m";
    String history 
"2026-01-07T15:43:51Z (local files)
2026-01-07T15:43:51Z https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_967649_v1.html";
    String infoUrl "https://osprey.bco-dmo.org/dataset/967649";
    String institution "BCO-DMO";
    String license 
"The data may be used and redistributed for free but is not intended
for legal use, since it may contain inaccuracies. Neither the data
Contributor, ERD, NOAA, nor the United States Government, nor any
of their employees or contractors, makes any warranty, express or
implied, including warranties of merchantability and fitness for a
particular purpose, or assumes any legal liability for the accuracy,
completeness, or usefulness, of this information.";
    Float64 Northernmost_Northing 47.32494;
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 41.63001;
    String summary "This dataset includes the CTD and Sonde data from 11 cruises on Lake Superior aboard the University of Minnesota Duluth R/V Blue Heron from May 2021 to May 2024 (May, July, August, and October), as well as 11 cruises on Lake Erie (May, July, August, and October). The data are from five stations (two on Lake Superior; Siskiwit Bay and Western Mooring, and three on Lake Erie; Central Anoxic Basin, Lorain, and North Bass). This project is led by PIs Joe Werne at University of Pittsburgh, Silvia Newell at University of Michigan, Emily Elliott at University of Pittsburgh, Trinity Hamilton at University of Minnesota, and Richard Ricketts at University of Minnesota Duluth, and was funded by NSF Chemical Oceanography.";
    String time_coverage_end "2023-10-11T01:02:20Z";
    String time_coverage_start "2021-05-12T23:12:51Z";
    String title "[CTD and in situ Sonde Lake Superior and Lake Erie 2021-2024] - CTD and in situ Sonde field data collected on Lake Superior and Lake Erie aboard the R/V Blue Heron and R/V Gibraltar III from May 2021 to May 2024 (Collaborative Research: Cyanobacteria, Nitrogen Cycling, and Export Production in the Laurentian Great Lakes)";
    Float64 Westernmost_Easting -91.11304;
  }
}

 

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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.
• (easy) You can make a graph or map by using the dataset's Make A Graph form. It makes the URL for you.
• (not hard) You can bypass the forms and get the data or make a graph or map by generating the URL by hand or with a computer program or script.

Tabledap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/datasetID.fileType{?query}
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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