ERDDAP > tabledap > Data Access Form

Dataset Title:	[Winter survey data from Lake Erie from Dec 2022 to Mar 2023] - Winter survey data from Lake Erie from Dec 2022 to Mar 2023 (Lake Erie Center for Fresh Waters and Human Health)
Institution:	BCO-DMO   (Dataset ID: bcodmo_dataset_949394_v1)
Information:	Summary | License | FGDC | ISO 19115 | Metadata | Background | Files | Make a graph

 

Variable	Optional Constraint #1		Optional Constraint #2		Minimum	Maximum
Station (unitless)	!= =~ <= >= = < >		!= =~ <= >= = < >		"EC 1"	"Site 3"
Deployment (unitless)	!= =~ <= >= = < >		!= =~ <= >= = < >		"GR-2023-01"	"SR-2023-02"
Alt_Station (unitless)	!= =~ <= >= = < >		!= =~ <= >= = < >		"HU 08"	"HU 08"
Lake (unitless)	!= =~ <= >= = < >		!= =~ <= >= = < >		"Erie"	"Superior - Whitefi..."
Date (unitless)	!= =~ <= >= = < >		!= =~ <= >= = < >		"2022-12-06"	"2023-04-08"
Time_EST (unitless)	!= =~ <= >= = < >		!= =~ <= >= = < >		"00:21"	"21:19"
time (Iso_datetime_utc, UTC)	!= =~ <= >= = < >		!= =~ <= >= = < >		2022-12-12T02:00:00Z	2023-04-08T16:00:00Z
latitude (degrees_north)	!= =~ <= >= = < >		!= =~ <= >= = < >		41.2513	46.4531
longitude (Long, degrees_east)	!= =~ <= >= = < >		!= =~ <= >= = < >		-87.4225	-79.9013
Water_Depth (meters (m))	!= =~ <= >= = < >		!= =~ <= >= = < >		7.77	173.7
Ice_Cover (percent (%))	!= =~ <= >= = < >		!= =~ <= >= = < >		0	100
Snow_Cover (percent (%))	!= =~ <= >= = < >		!= =~ <= >= = < >		0	0
Ice_Type (unitless)	!= =~ <= >= = < >		!= =~ <= >= = < >		"brash"	"brash"
Ice_Thickness (inches (in))	!= =~ <= >= = < >		!= =~ <= >= = < >
Air_Temp (Degrees Celsius)	!= =~ <= >= = < >		!= =~ <= >= = < >		-8.1	6.1
Water_Temp (Degrees Celsius)	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0	7.8
DO (microgram per liter (µg L-1))	!= =~ <= >= = < >		!= =~ <= >= = < >		13.27	14.32
DO_percent (percent (%))	!= =~ <= >= = < >		!= =~ <= >= = < >		100.2	107.0
Cond (microsiemens per centimeter (uS/cm))	!= =~ <= >= = < >		!= =~ <= >= = < >		113	322
pH (unitless (pH scale))	!= =~ <= >= = < >		!= =~ <= >= = < >		8.28	9.01
Sechhi (meters (m))	!= =~ <= >= = < >		!= =~ <= >= = < >
Baro_Press (Hg)	!= =~ <= >= = < >		!= =~ <= >= = < >		976.97	1038.93
Wind_speed (Knots (Kt))	!= =~ <= >= = < >		!= =~ <= >= = < >		"10"	"8"
Wind_direction (unitless)	!= =~ <= >= = < >		!= =~ <= >= = < >		"E"	"WSW"
Wind_degrees (degree)	!= =~ <= >= = < >		!= =~ <= >= = < >		40	280
Weather (unitless)	!= =~ <= >= = < >		!= =~ <= >= = < >		"100% Cloud cover"	"overcast, occasion..."
Comments (unitless)	!= =~ <= >= = < >		!= =~ <= >= = < >		""	""
Chlorophyll_LessThan_0_2um (ug/L)	!= =~ <= >= = < >		!= =~ <= >= = < >		0.2	18.95
F (microgram per liter (µg L-1))	!= =~ <= >= = < >		!= =~ <= >= = < >		0.02	0.12
CL (microgram per liter (µg L-1))	!= =~ <= >= = < >		!= =~ <= >= = < >		7.6	16.3
NO2 (microgram per liter (µg L-1))	!= =~ <= >= = < >		!= =~ <= >= = < >		0	0
NO3 (microgram per liter (µg L-1))	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0	0.242
SO4 (microgram per liter (µg L-1))	!= =~ <= >= = < >		!= =~ <= >= = < >		13.9	20.2
SIO2 (microgram per liter (µg L-1))	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0368	2.9304
NH3 (microgram per liter (µg L-1))	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0022	0.2199
SRP (microgram per liter (µg L-1))	!= =~ <= >= = < >		!= =~ <= >= = < >		-0.0024	0.0096
Total_Phosphorus (microgram per liter (µg L-1))	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0011	0.0488
Total_Nitrogen (microgram per liter (µg L-1))	!= =~ <= >= = < >		!= =~ <= >= = < >		0.072	0.354

 

Server-side Functions

distinct()

orderBy orderByDescending orderByClosest orderByCount orderByLimit orderByMax orderByMin orderByMinMax orderByMean orderBySum (" Station Deployment Alt_Station Lake Date Time_EST time latitude longitude Water_Depth Ice_Cover Snow_Cover Ice_Type Ice_Thickness Air_Temp Water_Temp DO DO_percent Cond pH Sechhi Baro_Press Wind_speed Wind_direction Wind_degrees Weather Comments Chlorophyll_LessThan_0_2um F CL NO2 NO3 SO4 SIO2 NH3 SRP Total_Phosphorus Total_Nitrogen Station Deployment Alt_Station Lake Date Time_EST time latitude longitude Water_Depth Ice_Cover Snow_Cover Ice_Type Ice_Thickness Air_Temp Water_Temp DO DO_percent Cond pH Sechhi Baro_Press Wind_speed Wind_direction Wind_degrees Weather Comments Chlorophyll_LessThan_0_2um F CL NO2 NO3 SO4 SIO2 NH3 SRP Total_Phosphorus Total_Nitrogen Station Deployment Alt_Station Lake Date Time_EST time latitude longitude Water_Depth Ice_Cover Snow_Cover Ice_Type Ice_Thickness Air_Temp Water_Temp DO DO_percent Cond pH Sechhi Baro_Press Wind_speed Wind_direction Wind_degrees Weather Comments Chlorophyll_LessThan_0_2um F CL NO2 NO3 SO4 SIO2 NH3 SRP Total_Phosphorus Total_Nitrogen Station Deployment Alt_Station Lake Date Time_EST time latitude longitude Water_Depth Ice_Cover Snow_Cover Ice_Type Ice_Thickness Air_Temp Water_Temp DO DO_percent Cond pH Sechhi Baro_Press Wind_speed Wind_direction Wind_degrees Weather Comments Chlorophyll_LessThan_0_2um F CL NO2 NO3 SO4 SIO2 NH3 SRP Total_Phosphorus Total_Nitrogen Station Deployment Alt_Station Lake Date Time_EST time latitude longitude Water_Depth Ice_Cover Snow_Cover Ice_Type Ice_Thickness Air_Temp Water_Temp DO DO_percent Cond pH Sechhi Baro_Press Wind_speed Wind_direction Wind_degrees Weather Comments Chlorophyll_LessThan_0_2um F CL NO2 NO3 SO4 SIO2 NH3 SRP Total_Phosphorus Total_Nitrogen ")

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 {
  Station {
    String long_name "Station";
    String units "unitless";
  }
  Deployment {
    String long_name "Deployment";
    String units "unitless";
  }
  Alt_Station {
    String long_name "Alt_station";
    String units "unitless";
  }
  Lake {
    String long_name "Lake";
    String units "unitless";
  }
  Date {
    String long_name "Date";
    String units "unitless";
  }
  Time_EST {
    String long_name "Time_est";
    String units "unitless";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.6708104e+9, 1.6809696e+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";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range 41.2513, 46.4531;
    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 -87.4225, -79.9013;
    String axis "X";
    String ioos_category "Location";
    String long_name "Long";
    String standard_name "longitude";
    String units "degrees_east";
  }
  Water_Depth {
    Float32 actual_range 7.77, 173.7;
    String long_name "Water_depth";
    String units "meters (m)";
  }
  Ice_Cover {
    Int32 actual_range 0, 100;
    String long_name "Ice_cover";
    String units "percent (%)";
  }
  Snow_Cover {
    Int32 actual_range 0, 0;
    String long_name "Snow_cover";
    String units "percent (%)";
  }
  Ice_Type {
    String long_name "Ice_type";
    String units "unitless";
  }
  Ice_Thickness {
    String long_name "Ice_thickness";
    String units "inches (in)";
  }
  Air_Temp {
    Float32 actual_range -8.1, 6.1;
    String long_name "Air_temp";
    String units "Degrees Celsius";
  }
  Water_Temp {
    Float32 actual_range 0.0, 7.8;
    String long_name "Water_temp";
    String units "Degrees Celsius";
  }
  DO {
    Float32 actual_range 13.27, 14.32;
    String long_name "Do";
    String units "microgram per liter (µg L-1)";
  }
  DO_percent {
    Float32 actual_range 100.2, 107.0;
    String long_name "Do_percent";
    String units "percent (%)";
  }
  Cond {
    Int32 actual_range 113, 322;
    String long_name "Cond";
    String units "microsiemens per centimeter (uS/cm)";
  }
  pH {
    Float32 actual_range 8.28, 9.01;
    String long_name "Ph";
    String units "unitless (pH scale)";
  }
  Sechhi {
    String long_name "Sechhi";
    String units "meters (m)";
  }
  Baro_Press {
    Float32 actual_range 976.97, 1038.93;
    String long_name "Baro_press";
    String units "Hg";
  }
  Wind_speed {
    String long_name "Wind_speed";
    String units "Knots (Kt)";
  }
  Wind_direction {
    String long_name "Wind_direction";
    String units "unitless";
  }
  Wind_degrees {
    Int32 actual_range 40, 280;
    String long_name "Wind_degrees";
    String units "degree";
  }
  Weather {
    String long_name "Weather";
    String units "unitless";
  }
  Comments {
    String long_name "Comments";
    String units "unitless";
  }
  Chlorophyll_LessThan_0_2um {
    Float32 actual_range 0.2, 18.95;
    String long_name "Chlorophyll_lessthan_0_2um";
    String units "ug/L";
  }
  F {
    Float32 actual_range 0.02, 0.12;
    String long_name "F";
    String units "microgram per liter (µg L-1)";
  }
  CL {
    Float32 actual_range 7.6, 16.3;
    String long_name "Cl";
    String units "microgram per liter (µg L-1)";
  }
  NO2 {
    Int32 actual_range 0, 0;
    String long_name "No2";
    String units "microgram per liter (µg L-1)";
  }
  NO3 {
    Float32 actual_range 0.0, 0.242;
    String long_name "No3";
    String units "microgram per liter (µg L-1)";
  }
  SO4 {
    Float32 actual_range 13.9, 20.2;
    String long_name "So4";
    String units "microgram per liter (µg L-1)";
  }
  SIO2 {
    Float32 actual_range 0.0368, 2.9304;
    String long_name "Sio2";
    String units "microgram per liter (µg L-1)";
  }
  NH3 {
    Float32 actual_range 0.0022, 0.2199;
    String long_name "Nh3";
    String units "microgram per liter (µg L-1)";
  }
  SRP {
    Float32 actual_range -0.0024, 0.0096;
    String long_name "Srp";
    String units "microgram per liter (µg L-1)";
  }
  Total_Phosphorus {
    Float32 actual_range 0.0011, 0.0488;
    String long_name "Total_phosphorus";
    String units "microgram per liter (µg L-1)";
  }
  Total_Nitrogen {
    Float32 actual_range 0.072, 0.354;
    String long_name "Total_nitrogen";
    String units "microgram per liter (µg L-1)";
  }
 }
  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.949394.1";
    Float64 Easternmost_Easting -79.9013;
    Float64 geospatial_lat_max 46.4531;
    Float64 geospatial_lat_min 41.2513;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -79.9013;
    Float64 geospatial_lon_min -87.4225;
    String geospatial_lon_units "degrees_east";
    String history 
"2025-03-14T02:52:30Z (local files)
2025-03-14T02:52:30Z https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_949394_v1.html";
    String infoUrl "https://www.bco-dmo.org/dataset/949394";
    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 46.4531;
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 41.2513;
    String summary "This dataset includes winter survey data from Lake Erie collected on USCGC Neah Bay, CCGS Griffon, and CCGS Samuel Risley from December 2022 to March 2023. The survey includes environmental observations, physico-chemical data, chlorophyll, total and dissolved nutrients. The Lake Erie Center for Fresh Waters and Human Health is a five-year, multi-institutional effort aimed at understanding the environmental factors and ongoing changes that influence the growth and toxicity of cyanobacterial harmful algal blooms (cHABs) in Lake Erie.";
    String time_coverage_end "2023-04-08T16:00:00Z";
    String time_coverage_start "2022-12-12T02:00:00Z";
    String title "[Winter survey data from Lake Erie from Dec 2022 to Mar 2023] - Winter survey data from Lake Erie from Dec 2022 to Mar 2023 (Lake Erie Center for Fresh Waters and Human Health)";
    Float64 Westernmost_Easting -87.4225;
  }
}

 

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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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