Easier access to scientific data
Brought to you by NOAA NMFS SWFSC ERD
|
ERDDAP
Easier access to scientific data |
|
Brought to you by NOAA NMFS SWFSC ERD |
| Dataset Title: | Bedford Basin Oxygen Winkler and Chlorophyll Data Table View
|
| Institution: | Ocean Frontier Institute (Dataset ID: bbts_water_samples_table) |
| Range: | longitude = -63.64079 to -63.64079°E, latitude = 44.69176 to 44.69176°N, depth = 1.0 to 60.0m, time = 2008-11-19T00:00:00Z to 2025-10-15T00:00:00Z |
| Information: | Summary
| License
| FGDC
| ISO 19115
| Metadata
| Background
| Subset
| Data Access Form
| Files
|
|
Click on the map to specify a new center point.
Zoom:
![[The graph you specified. Please be patient.]](https://deverddap.ceotr.ca/erddap/tabledap/bbts_water_samples_table.png?longitude,latitude,oxygen_analysis_date&time%3E=2025-10-09T00%3A00%3A00Z&time%3C=2025-10-16T00%3A00%3A00Z&.draw=markers&.marker=5%7C5&.color=0x000000&.colorBar=%7C%7C%7C%7C%7C&.bgColor=0xffccccff)
|
Attributes {
s {
station_id {
String cf_role "timeseries_id";
String comment
"Arbitrary station ID for all profiles, to satisfy ERDDAP
timeseries_id requirement.";
String ioos_category "Identifier";
String long_name "Station Identifier";
String value "\"bb1\"";
}
profile_id {
String cf_role "profile_id";
String comment
"Arbitrary constant profile ID, to satisfy ERDDAP profile_id
requirement.";
String long_name "Profile Identifier";
String value "\"profile1\"";
}
time {
String _CoordinateAxisType "Time";
Float64 actual_range 1.2270528e+9, 1.7604864e+9;
String axis "T";
String calendar "standard";
Float64 colorBarMaximum 3.0e+9;
Float64 colorBarMinimum 1.0e+9;
String comment "Date of sampling for each water sample.";
String coverage_content_type "coordinate";
String ioos_category "Time";
String long_name "Time of observation.";
String standard_name "time";
String time_origin "01-JAN-1970 00:00:00";
String time_precision "day";
String units "seconds since 1970-01-01T00:00:00Z";
Float64 valid_max 2.524608e+9;
Float64 valid_min 1.1991456e+9;
}
depth {
String _CoordinateAxisType "Height";
String _CoordinateZisPositive "down";
Float32 actual_range 1.0, 60.0;
String axis "Z";
Float64 colorBarMaximum 8000.0;
Float64 colorBarMinimum -8000.0;
String colorBarPalette "TopographyDepth";
String coverage_content_type "coordinate";
String ioos_category "Location";
String long_name "Depth below sea surface";
String positive "down";
String standard_name "depth";
String units "m";
Float32 valid_max 65.0;
Float32 valid_min 1.0;
}
oxygen_analysis_date {
Float64 actual_range 1.4268096e+9, 1.7606592e+9;
String calendar "standard";
String comment "Date when Winkler titrations were completed in the laboratory for each weekly oxygen sample; applies to all depths for each time.";
String coverage_content_type "auxiliaryInformation";
String ioos_category "Time";
String long_name "Laboratory analysis date for dissolved oxygen samples";
String standard_name "time";
String time_origin "01-JAN-1970 00:00:00";
String time_precision "day";
String units "seconds since 1970-01-01T00:00:00Z";
}
chlorophyll_analysis_date {
Float64 actual_range 1.2445056e+9, 1.7540064e+9;
String calendar "standard";
String comment "Date when chlorophyll-a concentrations were analyzed in the laboratory using both the Welschmeyer and acidification fluorometric methods. Applies to all depths for each time.";
String coverage_content_type "auxiliaryInformation";
String ioos_category "Time";
String long_name "Laboratory analysis date for chlorophyll-a samples";
String standard_name "time";
String time_origin "01-JAN-1970 00:00:00";
String time_precision "day";
String units "seconds since 1970-01-01T00:00:00Z";
}
latitude {
String _CoordinateAxisType "Lat";
Float32 _FillValue 9.96921e+36;
Float32 actual_range 44.691765, 44.691765;
String axis "Y";
Float64 colorBarMaximum 90.0;
Float64 colorBarMinimum -90.0;
String coverage_content_type "coordinate";
String ioos_category "Location";
String long_name "Latitude of sampling site";
String standard_name "latitude";
String units "degrees_north";
Float32 valid_max 90.0;
Float32 valid_min -90.0;
}
longitude {
String _CoordinateAxisType "Lon";
Float32 _FillValue 9.96921e+36;
Float32 actual_range -63.64079, -63.64079;
String axis "X";
Float64 colorBarMaximum 180.0;
Float64 colorBarMinimum -180.0;
String coverage_content_type "coordinate";
String ioos_category "Location";
String long_name "Longitude of sampling site";
String standard_name "longitude";
String units "degrees_east";
Float32 valid_max 180.0;
Float32 valid_min -180.0;
}
dissolved_o2 {
Float64 _FillValue NaN;
Float64 actual_range -0.03204131852384988, 11.569517155768782;
String ancillary_variables "oxygen_analysis_date";
Float64 colorBarMaximum 1.0;
Float64 colorBarMinimum 0.0;
String comment "Two replicate Winkler titrations averaged for each time/depth pair.";
String coverage_content_type "physicalMeasurement";
String ioos_category "Dissolved O2";
String long_name "Dissolved oxygen concentration (Winkler method)";
String standard_name "volume_fraction_of_oxygen_in_sea_water";
String units "ml/L";
}
chlorophyll_a_welschmeyer {
Float64 actual_range 0.004874307692307692, 43.00213675213676;
String ancillary_variables "chlorophyll_analysis_date chlorophyll_comments";
Float64 colorBarMaximum 30.0;
Float64 colorBarMinimum 0.03;
String colorBarScale "Log";
String comment "Three replicate fluorometric measurements averaged for each time/depth pair using the Welschmeyer method in the laboratory.";
String coverage_content_type "physicalMeasurement";
String ioos_category "Ocean Color";
String long_name "Chlorophyll-a concentration (Welschmeyer method)";
String standard_name "mass_concentration_of_chlorophyll_a_in_sea_water";
String units "µg/l";
}
chlorophyll_a_acid {
Float64 actual_range 0.0, 82.22058638970029;
String ancillary_variables "chlorophyll_analysis_date chlorophyll_comments";
Float64 colorBarMaximum 30.0;
Float64 colorBarMinimum 0.03;
String colorBarScale "Log";
String comment "Three replicate fluorometric measurements averaged for each time/depth pair using the acidification method in the laboratory.";
String coverage_content_type "physicalMeasurement";
String ioos_category "Ocean Color";
String long_name "Chlorophyll-a concentration (acidification method)";
String standard_name "mass_concentration_of_chlorophyll_a_in_sea_water";
String units "µg/l";
}
chlorophyll_comments {
String comment "Free-text notes entered by lab or technician for chlorophyll-a analysis; applies to all depths for a given time step.";
String coverage_content_type "auxiliaryInformation";
String ioos_category "Quality";
String long_name "Chlorophyll-a sampling or analysis notes";
}
}
NC_GLOBAL {
String acknowledgement "Data collected by the Ocean Frontier Institute in collaboration with the Bedford Institute of Oceanography.";
String cdm_data_type "TimeSeriesProfile";
String cdm_profile_variables "profile_id, depth";
String cdm_timeseries_variables "station_id, time, latitude, longitude";
String comment "Latitude and Longitude may not be exact, as the platform is a research vessel that may drift slightly during sampling.";
String Conventions "CF-1.10, COARDS, ACDD-1.3";
String creator_email "ceotr@dal.ca";
String creator_institution "Ocean Frontier Institute";
String creator_name "OFI";
String creator_type "institution";
String creator_url "https://www.ofi.ca";
Float64 Easternmost_Easting -63.64079;
String featureType "TimeSeriesProfile";
Float64 geospatial_lat_max 44.69176;
Float64 geospatial_lat_min 44.69176;
String geospatial_lat_units "degrees_north";
Float64 geospatial_lon_max -63.64079;
Float64 geospatial_lon_min -63.64079;
String geospatial_lon_units "degrees_east";
Float64 geospatial_vertical_max 60.0;
Float64 geospatial_vertical_min 1.0;
String geospatial_vertical_positive "down";
String geospatial_vertical_units "m";
String history
"Lab data gathered from water samples from Bedford Basin, Nova Scotia.
2025-12-12T09:07:49Z (local files)
2025-12-12T09:07:49Z http://deverddap.ceotr.ca//tabledap/bbts_water_samples_table.das";
String id "bb1-oxygen-chlorophyll";
String infoUrl "https://ceotr.ocean.dal.ca/bbasin";
String institution "Ocean Frontier Institute";
String keywords "acid, acidification, analysis, basin, bedford, below, chemistry, chlorophyll, chlorophyll-a, chlorophyll_a_acid, chlorophyll_a_welschmeyer, chlorophyll_analysis_date, chlorophyll_comments, color, concentration, data, date, depth, dissolved, dissolved o2, dissolved_o2, earth, Earth Science > Oceans > Ocean\\n Chemistry\\n > Chlorophyll, Earth Science > Oceans > Ocean Chemistry > Oxygen, fraction, frontier, institute, laboratory, latitude, longitude, mass, mass_concentration_of_chlorophyll_a_in_sea_water, method, notes, O2, observation, ocean, ocean color, oceans, oxygen, oxygen_analysis_date, quality, samples, sampling, science, sea, seawater, series, site, surface, time, time series, volume, volume_fraction_of_oxygen_in_sea_water, water, welschmeyer, winkler";
String keywords_vocabulary "GCMD Science Keywords";
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 44.69176;
String platform "research vessel";
String platform_code "31";
String platform_name "Sigma T";
String platform_type "research vessel";
String platform_vocabulary "https://vocab.nerc.ac.uk/collection/L06/current/";
String project "Bedford Basin Time Series";
String source "Discrete water samples collected weekly from the Bedford Basin (BB1) station.";
String sourceUrl "(local files)";
Float64 Southernmost_Northing 44.69176;
String standard_name_vocabulary "CF Standard Name Table v84";
String subsetVariables
"time, oxygen_analysis_date, chlorophyll_analysis_date, latitude,
longitude, dissolved_o2, chlorophyll_comments";
String summary "Oxygen Winkler and Chlorophyll data otained through Winkler, Welschmeyer, and Acid methods. The samples used in this data were gathered as part of the Bedford Basin Time Series project. Samples are taken from the Bedford Basin station (BB1) at coordinates: 44.6917658333, -63.6407906667.";
String time_coverage_end "2025-10-15T00:00:00Z";
String time_coverage_start "2008-11-19T00:00:00Z";
String title "Bedford Basin Oxygen Winkler and Chlorophyll Data Table View";
Float64 Westernmost_Easting -63.64079;
}
}
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.
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.