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> Make A Graph
| Dataset Title: | CTD Profiles from RRS Challenger cruise CH11B/78
|
| Institution: | Scottish Association for Marine Science (Dataset ID: 6850_CH11B_78_CTD) |
| Range: | longitude = -13.78 to -6.2833°E, latitude = 56.6833 to 59.6666°N, time = 1978-07-30T20:34:00Z to 1978-08-11T12:23:00Z |
| Information: | Summary
| License
| FGDC
| ISO 19115
| Metadata
| Background
| Data Access Form
| Files
|
|
Click on the map to specify a new center point.
Zoom:
![[The graph you specified. Please be patient.]](https://erddap.bodc.ac.uk/erddap/tabledap/6850_CH11B_78_CTD.png?longitude,latitude,crs&time%3E=1978-08-05T00%3A00%3A00Z&time%3C=1978-08-12T00%3A00%3A00Z&.draw=markers&.marker=5%7C5&.color=0x000000&.colorBar=%7C%7C%7C%7C%7C&.bgColor=0xffccccff)
|
Things You Can Do With Your Graphs
Well, you can do anything you want with your graphs, of course. But some things you might not have considered are:- Web page authors can embed a graph of the latest data in a web page using HTML <img> tags.
- Anyone can use ERDDAPs Slide Sorter
to build a personal web page that displays graphs
with the latest data (or other images or HTML content), each in its own, draggable slide.
The Dataset Attribute Structure (.das) for this Dataset
Attributes {
s {
SDN_CRUISE {
UInt32 _ChunkSizes 1, 80;
String long_name "CRUISE NAME";
String type "String";
}
crs {
Int32 actual_range 0, 0;
String epsg_code "EPSG:4326";
String grid_mapping_name "latitude_longitude";
String inverse_flattening "298.257223563";
String semi_major_axis "6378137.0";
String type "int";
}
SDN_EDMO_CODE {
UInt32 _ChunkSizes 1;
Int32 actual_range 43, 43;
String long_name "European Directory of Marine Organisations code for the CDI partner";
String type "int";
}
SDN_STATION {
UInt32 _ChunkSizes 1, 80;
String long_name "Profile label";
String type "String";
}
SDN_LOCAL_CDI_ID {
UInt32 _ChunkSizes 1, 80;
String cf_role "profile_id";
String long_name "SeaDataNet CDI identifier";
String type "String";
}
sea_floor_depth_below_sea_surface {
UInt32 _ChunkSizes 1;
Float32 _FillValue -999.0;
Float32 actual_range 45.0, 2194.0;
String long_name "Bathymetric depth at profile measurement site";
String sdn_P02_name "Bathymetry and Elevation";
String sdn_P02_urn "SDN:P02::MBAN";
String sdn_parameter_name "Sea-floor depth (below instantaneous sea level) {bathymetric depth} in the water body";
String sdn_parameter_urn "SDN:P01::MBANZZZZ";
String sdn_uom_name "Metres";
String sdn_uom_urn "SDN:P06::ULAA";
String standard_name "sea_floor_depth_below_sea_surface";
String type "float";
String units "meters";
}
POSITION_SEADATANET_QC {
UInt32 _ChunkSizes 1;
Byte _FillValue 57;
String _Unsigned "false";
Byte actual_range 49, 49;
String Conventions "SeaDataNet measurand qualifier flags";
String coordinates "TIME PRES LATITUDE LONGITUDE";
String flag_meanings "no_quality_control good_value probably_good_value probably_bad_value bad_value changed_value value_below_detection value_in_excess interpolated_value missing_value value_phenomenon_uncertain";
String flag_values "[48 49 50 51 52 53 54 55 56 57 65]";
String long_name "SeaDataNet quality flag";
String sdn_conventions_urn "SDN:L20::";
String type "byte";
}
TIME_SEADATANET_QC {
UInt32 _ChunkSizes 1;
Byte _FillValue 57;
String _Unsigned "false";
Byte actual_range 48, 48;
String Conventions "SeaDataNet measurand qualifier flags";
String coordinates "TIME";
String flag_meanings "no_quality_control good_value probably_good_value probably_bad_value bad_value changed_value value_below_detection value_in_excess interpolated_value missing_value value_phenomenon_uncertain";
String flag_values "[48 49 50 51 52 53 54 55 56 57 65]";
String long_name "SeaDataNet quality flag";
String sdn_conventions_urn "SDN:L20::";
String type "byte";
}
PRES_SEADATANET_QC {
UInt32 _ChunkSizes 1, 534;
Byte _FillValue 57;
String _Unsigned "false";
Byte actual_range 49, 49;
String Conventions "SeaDataNet measurand qualifier flags";
String coordinates "TIME PRES LATITUDE LONGITUDE";
String flag_meanings "no_quality_control good_value probably_good_value probably_bad_value bad_value changed_value value_below_detection value_in_excess interpolated_value missing_value value_phenomenon_uncertain";
String flag_values "[48 49 50 51 52 53 54 55 56 57 65]";
String long_name "SeaDataNet quality flag";
String sdn_conventions_urn "SDN:L20::";
String type "byte";
}
SSALPR01_SEADATANET_QC {
UInt32 _ChunkSizes 1, 534;
Byte _FillValue 57;
String _Unsigned "false";
Byte actual_range 49, 51;
String Conventions "SeaDataNet measurand qualifier flags";
String coordinates "TIME PRES LATITUDE LONGITUDE";
String flag_meanings "no_quality_control good_value probably_good_value probably_bad_value bad_value changed_value value_below_detection value_in_excess interpolated_value missing_value value_phenomenon_uncertain";
String flag_values "[48 49 50 51 52 53 54 55 56 57 65]";
String long_name "SeaDataNet quality flag";
String sdn_conventions_urn "SDN:L20::";
String type "byte";
}
SSALPR01 {
UInt32 _ChunkSizes 1, 534;
Float32 _FillValue -1.0;
Float32 actual_range 33.873, 35.377;
String ancillary_variables "SSALPR01_SEADATANET_QC";
String coordinates "TIME PRES LATITUDE LONGITUDE";
String long_name "UspSal";
String sdn_P02_name "Salinity of the water column";
String sdn_P02_urn "SDN:P02::PSAL";
String sdn_parameter_name "Salinity of the water body by conductivity cell";
String sdn_parameter_urn "SDN:P01::SSALPR01";
String sdn_uom_name "Parts per thousand";
String sdn_uom_urn "SDN:P06::UPPT";
String type "float";
String units "ppt";
}
TEMPST01_SEADATANET_QC {
UInt32 _ChunkSizes 1, 534;
Byte _FillValue 57;
String _Unsigned "false";
Byte actual_range 49, 51;
String Conventions "SeaDataNet measurand qualifier flags";
String coordinates "TIME PRES LATITUDE LONGITUDE";
String flag_meanings "no_quality_control good_value probably_good_value probably_bad_value bad_value changed_value value_below_detection value_in_excess interpolated_value missing_value value_phenomenon_uncertain";
String flag_values "[48 49 50 51 52 53 54 55 56 57 65]";
String long_name "SeaDataNet quality flag";
String sdn_conventions_urn "SDN:L20::";
String type "byte";
}
TEMPST01 {
UInt32 _ChunkSizes 1, 534;
Float32 _FillValue -9.0;
Float32 actual_range 3.25, 13.63;
String ancillary_variables "TEMPST01_SEADATANET_QC";
String coordinates "TIME PRES LATITUDE LONGITUDE";
String long_name "WC_temp_CTD";
String sdn_P02_name "Temperature of the water column";
String sdn_P02_urn "SDN:P02::TEMP";
String sdn_parameter_name "Temperature of the water body by CTD or STD";
String sdn_parameter_urn "SDN:P01::TEMPST01";
String sdn_uom_name "Degrees Celsius";
String sdn_uom_urn "SDN:P06::UPAA";
String type "float";
String units "degC";
}
latitude {
UInt32 _ChunkSizes 1;
String _CoordinateAxisType "Lat";
Float64 actual_range 56.6833, 59.6666;
String ancillary_variables "POSITION_SEADATANET_QC";
String axis "Y";
String grid_mapping "crs";
String ioos_category "Location";
String long_name "Latitude";
String sdn_P02_name "Horizontal spatial co-ordinates";
String sdn_P02_urn "SDN:P02::ALAT";
String sdn_parameter_name "Latitude north";
String sdn_parameter_urn "SDN:P01::ALATZZ01";
String sdn_uom_name "Degrees north";
String sdn_uom_urn "SDN:P06::DEGN";
String standard_name "latitude";
String type "double";
String units "degrees_north";
Float64 valid_max 90.0;
Float64 valid_min -90.0;
}
longitude {
UInt32 _ChunkSizes 1;
String _CoordinateAxisType "Lon";
Float64 actual_range -13.78, -6.2833;
String ancillary_variables "POSITION_SEADATANET_QC";
String axis "X";
String grid_mapping "crs";
String ioos_category "Location";
String long_name "Longitude";
String sdn_P02_name "Horizontal spatial co-ordinates";
String sdn_P02_urn "SDN:P02::ALAT";
String sdn_parameter_name "Longitude east";
String sdn_parameter_urn "SDN:P01::ALONZZ01";
String sdn_uom_name "Degrees east";
String sdn_uom_urn "SDN:P06::DEGE";
String standard_name "longitude";
String type "double";
String units "degrees_east";
Float64 valid_max 180.0;
Float64 valid_min -180.0;
}
sea_water_pressure_due_to_sea_water {
UInt32 _ChunkSizes 1, 534;
String _CoordinateAxisType "Height";
Float32 _FillValue -999.0;
Float32 actual_range 5.1, 2281.0;
String ancillary_variables "PRES_SEADATANET_QC";
String axis "Z";
String long_name "Pres_Z";
String positive "down";
String sdn_P02_name "Vertical spatial coordinates";
String sdn_P02_urn "SDN:P02::AHGT";
String sdn_parameter_name "Pressure (spatial coordinate) exerted by the water body by profiling pressure sensor and correction to read zero at sea level";
String sdn_parameter_urn "SDN:P01::PRESPR01";
String sdn_uom_name "Decibars";
String sdn_uom_urn "SDN:P06::UPDB";
String standard_name "sea_water_pressure_due_to_sea_water";
String type "float";
String units "dbar";
}
time {
UInt32 _ChunkSizes 1;
String _CoordinateAxisType "Time";
Float64 actual_range 2.7067884e+8, 2.7168618e+8;
String ancillary_variables "TIME_SEADATANET_QC";
String axis "T";
String calendar "julian";
String ioos_category "Time";
String legacy_time_adjust "true";
String long_name "Chronological Julian Date";
String sdn_P02_name "Date and time";
String sdn_P02_urn "SDN:P02::AYMD";
String sdn_parameter_name "Julian Date (chronological)";
String sdn_parameter_urn "SDN:P01::CJDY1101";
String sdn_uom_name "Days";
String sdn_uom_urn "SDN:P06::UTAA";
String standard_name "time";
String time_origin "01-JAN-1970 00:00:00";
String type "double";
String units "seconds since 1970-01-01T00:00:00Z";
String valid_max "2500000.0";
String valid_min "0.0";
}
}
NC_GLOBAL {
String cdm_altitude_proxy "sea_water_pressure_due_to_sea_water";
String cdm_data_type "Profile";
String cdm_profile_variables "longitude, latitude, time, SDN_LOCAL_CDI_ID";
String Conventions "SeaDataNet_1.0 CF-1.6, NCCSV-1.2";
String date_update "2024-08-03T02:50:46+0100";
Float64 Easternmost_Easting -6.2833;
String featureType "Profile";
Float64 geospatial_lat_max 59.6666;
Float64 geospatial_lat_min 56.6833;
String geospatial_lat_units "degrees_north";
Float64 geospatial_lon_max -6.2833;
Float64 geospatial_lon_min -13.78;
String geospatial_lon_units "degrees_east";
String grid_mapping_epsg_code "EPSG:4326";
Float64 grid_mapping_inverse_flattening 298.257223563;
String grid_mapping_name "latitude_longitude";
Float64 grid_mapping_semi_major_axis 6378137.0;
String history
"2026-06-13T18:27:53Z https://www.bodc.ac.uk/resources/inventories/cruise_inventory/report/6850/
2026-06-13T18:27:53Z https://erddap.bodc.ac.uk/tabledap/6850_CH11B_78_CTD.das";
String infoUrl "https://www.bodc.ac.uk/resources/inventories/cruise_inventory/report/6850/";
String institution "Scottish Association for Marine Science";
String license "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/";
Float64 Northernmost_Northing 59.6666;
String sourceUrl "https://www.bodc.ac.uk/resources/inventories/cruise_inventory/report/6850/";
Float64 Southernmost_Northing 56.6833;
String summary "CTD profiles from RRS Challenger cruise CH11B/78";
String time_coverage_end "1978-08-11T12:23:00Z";
String time_coverage_start "1978-07-30T20:34:00Z";
String title "CTD Profiles from RRS Challenger cruise CH11B/78";
Float64 Westernmost_Easting -13.78;
}
}
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.