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Dataset Title:  Surface seawater and marine boundary layer CO2 observations made from the
Kwakshua Channel (KC) Buoy on the central coast of British Columbia
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Institution:  Hakai Institute   (Dataset ID: HakaiKCBuoyResearch)
Information:  Summary ? | License ? | FGDC | Metadata | Background (external link) | Subset | Files | Make a graph
 
Variable ?   Optional
Constraint #1 ?
Optional
Constraint #2 ?
   Minimum ?
   or a List of Values ?
   Maximum ?
 
 Mooring_Name ?      
   - +  ?
 latitude (degrees_north) ?          51.65    51.65
  < slider >
 longitude (degrees_east) ?          -127.966    -127.966
  < slider >
 time (Date Time, UTC) ?          2018-05-01T15:47:00Z    2020-10-25T14:17:00Z
  < slider >
 xCO2_SW_wet (umol/mol) ?          77.3    757.8
 CO2_SW_QF ?      
   - +  ?
 H2O_SW (umol/mol) ?          -0.01    4.7
 xCO2_Air_wet (umol/mol) ?          397.0    495.6
 CO2_Air_QF ?      
   - +  ?
 H2O_Air (umol/mol) ?          -0.17    4.28
 Licor_Atm_Pressure (Licor Atmospheric Pressure, hPa) ?          983.1    1033.1
 Licor_Temp (degree_Celsius) ?          -1.4    21.4
 MAPCO2_O2 ?          83.81    130.09
 SST (degree_Celsius) ?          5.674    17.754
 Salinity (PSU) ?          -999.0    31.85
 xCO2_SW_dry (umol/mol) ?          77.4    759.6
 xCO2_Air_dry (umol/mol) ?          397.7    496.5
 fCO2_SW_sat (uatm) ?              
 fCO2_Air_sat (Fugacity of CO2 in Air, uatm) ?              
 dfCO2 (uatm) ?          -350.1    325.6
 pCO2_SW_sat (uatm) ?              
 pCO2_Air_sat (uatm) ?              
 dpCO2 (uatm) ?          -351.4    326.9
 
Server-side Functions ?
 distinct() ?
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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  Mooring_Name {
    String cf_role "timeseries_id";
    String long_name "Mooring Name";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range 51.65, 51.65;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range -127.966, -127.966;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.52518962e+9, 1.60363542e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "Date Time";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  xCO2_SW_wet {
    Float32 _FillValue -999.0;
    Float32 actual_range 77.3, 757.8;
    String ancillary_variables "CO2_SW_QF";
    String description "Mole fraction of CO2 in air in equilibrium with the seawater at sea surface temperature and measured humidity";
    String long_name "Mole fraction of CO2 in AIr at Sea Surface Temperature and Humidity";
    String units "umol/mol";
  }
  CO2_SW_QF {
    String _Unsigned "false";
    Byte actual_range 2, 5;
    String description "Flag for xCO2 SW (wet)";
    String long_name "CO2 SW QF";
    String standard_name "quality_flag";
  }
  H2O_SW {
    Float32 actual_range -0.01, 4.7;
    String description "Mole fraction of H2O in air from equilibrator";
    String long_name "Mole fraction of H2O in air from equilibrator";
    String units "umol/mol";
  }
  xCO2_Air_wet {
    Float32 _FillValue -999.0;
    Float32 actual_range 397.0, 495.6;
    String ancillary_variables "CO2_Air_QF";
    String description "Mole fraction of CO2 in air from airblock, 4 feet above the sea surface at measured humidity.";
    String long_name "Mole fraction of CO2 in Air at Measured Humidity";
    String units "umol/mol";
  }
  CO2_Air_QF {
    String _Unsigned "false";
    Byte actual_range 2, 5;
    String description "Quality Flag for xCO2 Air (wet)";
    String long_name "CO2 Air QF";
    String standard_name "quality_flag";
  }
  H2O_Air {
    Float32 actual_range -0.17, 4.28;
    String description "Mole fraction of H2O in air from airblock, 4 feet above the sea surface.";
    String long_name "Mole fraction of H2O in Air";
    String units "umol/mol";
  }
  Licor_Atm_Pressure {
    Float32 actual_range 983.1, 1033.1;
    String description "Atmospheric pressure at the airblock, 4 feet above the sea surface.";
    String long_name "Licor Atmospheric Pressure";
    String standard_name "surface_air_pressure";
    String units "hPa";
  }
  Licor_Temp {
    Float32 actual_range -1.4, 21.4;
    String description "Temperature of the Infrared Licor 820 in degrees Celsius.";
    String long_name "Licor Temperature";
    String units "degree_Celsius";
  }
  MAPCO2_O2 {
    Float32 actual_range 83.81, 130.09;
    String description "The percent oxygen of the surface seawater divided by the percent oxygen of the atmosphere at 4 feet above the sea surface. Disclaimer: The oxygen measurement is made in the equilibrated air and does not come to complete equilibrium therefore this measurement is qualitative and for diagnostic use only.";
    String long_name "MAPCO2 O2";
  }
  SST {
    Float32 _FillValue -999.0;
    Float32 actual_range 5.674, 17.754;
    String ancillary_variables "TS_QF";
    String description "Sea Surface Temperature";
    String long_name "Sea Surface Temperature";
    String standard_name "sea_surface_temperature";
    String units "degree_Celsius";
  }
  Salinity {
    Float32 actual_range -999.0, 31.85;
    Float64 colorBarMaximum 37.0;
    Float64 colorBarMinimum 32.0;
    String description "Sea Surface Salinity";
    String long_name "Sea Water Practical Salinity";
    String standard_name "sea_surface_practical_salinity";
    String units "PSU";
  }
  xCO2_SW_dry {
    Float32 _FillValue -999.0;
    Float32 actual_range 77.4, 759.6;
    String description "Mole fraction of CO2 in air in equilibrium with the seawater at sea surface temperature (dry air).";
    String long_name "Mole fraction of CO2 in Air in Equilibrium with Seawater at Sea Surface Temperature";
    String units "umol/mol";
  }
  xCO2_Air_dry {
    Float32 _FillValue -999.0;
    Float32 actual_range 397.7, 496.5;
    String description "Mole fraction of CO2 in air at the airblock, 4 feet above the sea surface (dry air).";
    String long_name "Sea Surface Concentration of CO2 in Air";
    String standard_name "dry_atmosphere_mole_fraction_of_carbon_dioxide";
    String units "umol/mol";
  }
  fCO2_SW_sat {
    Float32 _FillValue -999.0;
    String description "Fugacity of CO2 in air in equilibrium with the seawater at sea surface temperature (100% humidity). Since the measurements are taken at the sea surface, warming calculations are not necessary.";
    String long_name "Fugacity of CO2 in Air in Equilibrium with Seawater";
    String standard_name "fugacity_of_carbon_dioxide_in_sea_water";
    String units "uatm";
  }
  fCO2_Air_sat {
    Float32 _FillValue -999.0;
    String description "Fugacity of CO2 in air at the airblock, 4 feet above the sea surface (100% humidity)";
    String long_name "Fugacity of CO2 in Air";
    String units "uatm";
  }
  dfCO2 {
    Float32 _FillValue -999.0;
    Float32 actual_range -350.1, 325.6;
    String description "Difference of the fugacity of the CO2 in seawater and the fugacity of the CO2 in air (fCO2 SW - fCO2 Air).";
    String long_name "Difference of Fugacity of CO2 between Seawater and Air.";
    String units "uatm";
  }
  pCO2_SW_sat {
    Float32 _FillValue -999.0;
    String description "Partial Pressure of CO2 in air in equilibrium with the seawater at sea surface temperature (100% humidity)";
    String long_name "Surface Partial Pressure of Carbon Dioxide at Sea Surface Temperature";
    String standard_name "surface_partial_pressure_of_carbon_dioxide_in_sea_water";
    String units "uatm";
  }
  pCO2_Air_sat {
    Float32 _FillValue -999.0;
    String long_name "Surface Partial Pressure of Carbon Dioxide in Air";
    String standard_name "surface_partial_pressure_of_carbon_dioxide_in_air";
    String units "uatm";
  }
  dpCO2 {
    Float32 _FillValue -999.0;
    Float32 actual_range -351.4, 326.9;
    String description "Difference of the partial pressure of CO2 in seawater and air (pCO2 SW - pCO2 Air).";
    String long_name "Difference of partial pressure of CO2 in seawater and air";
    String units "uatm";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "Mooring_Name, latitude, longitude";
    String contributor_name "Wiley Evans";
    String contributor_role "pointOfContact";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String date_created "2018-05-01";
    Float64 Easternmost_Easting -127.966;
    String featureType "TimeSeries";
    Float64 geospatial_lat_max 51.65;
    Float64 geospatial_lat_min 51.65;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -127.966;
    Float64 geospatial_lon_min -127.966;
    String geospatial_lon_units "degrees_east";
    String geospatial_vertical_max "0.5";
    String geospatial_vertical_min "0.5";
    String history 
"2022-10-06T16:25:19Z https://www.nodc.noaa.gov/ocads/data/0208810.xml
2022-10-06T16:25:19Z https://catalogue.hakai.org/erddap/tabledap/HakaiKCBuoyResearch.html";
    String infoUrl "https://www.hakai.org";
    String institution "Hakai Institute";
    String instrument "Battelle Seaology (MApCO2) System with LI-COR LI-820,SBE 16";
    String keywords "British Columbia coast, Continuous measurement, Discrete measurement, inorganicCarbon, North Pacific Ocean, Northern Salish Sea, Quadra Island, seaSurfaceSalinity, seaSurfaceTemperature, Surface measurement";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "Creative Commons Attribution 4.0 (CC-BY-4.0)";
    Float64 Northernmost_Northing 51.65;
    String platform "moored surface buoy";
    String platform_vocabulary "https://vocab.nerc.ac.uk/collection/L06/current/";
    String sourceUrl "https://www.nodc.noaa.gov/ocads/data/0208810.xml";
    Float64 Southernmost_Northing 51.65;
    String standard_name_vocabulary "CF Standard Name Table v77";
    String subsetVariables "Mooring_Name, CO2_Air_QF, CO2_SW_QF";
    String summary "Kwakshua Channel, located near Fitz Hugh Sound on the central coast of British Columbia, has been a site for moored, high-resolution measurements of surface seawater and marine boundary layer CO2 content since May 2018. Measurements of in situ temperature, salinity, seawater and atmospheric CO2 partial pressure are made using a Battelle Seaology (MApCO2) System. The effort to collect these data are part of the Hakai Institute's directive to advance the understanding of carbon cycling in northeast Pacific coastal settings with specific emphasis on ocean acidification. This data contribution consists of measurements from May 1, 2018 to January 11, 2020.";
    String time_coverage_end "2020-10-25T14:17:00Z";
    String time_coverage_start "2018-05-01T15:47:00Z";
    String title "Surface seawater and marine boundary layer CO2 observations made from the Kwakshua Channel (KC) Buoy on the central coast of British Columbia";
    Float64 Westernmost_Easting -127.966;
  }
}

 

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 (external link) Data Access Protocol (DAP) (external link) and its selection constraints (external link).

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.


 
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