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Dataset Title:  High-resolution record of surface seawater CO2 content from the OceansAlaska
Shellfish Hatchery in Ketchikan, Alaska, USA Subscribe RSS
Institution:  Hakai Institute   (Dataset ID: HakaiKetchikanBoLResearch)
Range: longitude = -131.5954 to -131.5954°E, latitude = 55.315 to 55.315°N, time = 2016-08-29T22:03:00Z to 2019-05-16T14:23:00Z
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Subset | Data Access Form | Files
 
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Server-side Functions ?
 distinct() ?
? ("Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.")
 
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[The graph you specified. Please be patient.]

 

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:

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  station_id {
    String cf_role "timeseries_id";
    String long_name "Station";
  }
  Yearday {
    Float32 actual_range 1.003256, 366.9982;
    String long_name "Yearday";
  }
  Year {
    Int16 actual_range 2016, 2019;
    String long_name "Year";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.47250818e+9, 1.55801658e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "Date Time";
    String source_name "date_time";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String time_precision "1970-01-01T00:00:00Z";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range 55.315, 55.315;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String ioos_category "Location";
    String long_name "Latitude";
    String source_name "Latitude (deg N)";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range -131.5954, -131.5954;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String ioos_category "Location";
    String long_name "Longitude";
    String source_name "Longitude (deg E)";
    String standard_name "longitude";
    String units "degrees_east";
  }
  TSG_T {
    Float32 _FillValue -999.0;
    Float32 actual_range 4.3463, 15.4805;
    String long_name "Sea Water Temperature";
    String scale "ITS-90";
    String sensor_description "Seabird SBE45";
    String sensor_type "CTD";
    String standard_name "sea_surface_temperature";
    String units "degC";
  }
  TSG_S {
    Float32 _FillValue -999.0;
    Float32 actual_range 23.54935, 31.46505;
    String long_name "Sea Water Practical Salinity";
    String sensor_description "Seabird SBE45";
    String sensor_type "CTD";
    String standard_name "sea_water_practical_salinity";
    String units "1E-3";
  }
  corrected_xCO2 {
    Float32 _FillValue NaN;
    Float32 actual_range 155.6574, 735.411;
    String long_name "Corrected X CO2 (ppm)";
    String units "ppm";
  }
  equilibrator_pressure {
    Float32 _FillValue NaN;
    Float32 actual_range 98.69978, 103.5289;
    String long_name "Equilibrator Pressure (kPa)";
    String units "kPa";
  }
  SWpCO2_TSG_T {
    Float32 _FillValue NaN;
    Float32 actual_range 153.4808, 728.4982;
    String long_name "SWp CO2@TSG T (uatm)";
    String units "uatm";
  }
  SWfCO2_TSG_T {
    Float32 _FillValue NaN;
    Float32 actual_range 153.4747, 728.4699;
    String long_name "SWf CO2@TSG T (uatm)";
    String units "uatm";
  }
  SAMI_T {
    Float32 _FillValue NaN;
    Float32 actual_range 7.040493, 9.338526;
    String long_name "SAMI T (deg C)";
    String standard_name "sea_water_temperature";
    String units "degree_Celsius";
  }
  SAMI_TA {
    Float32 _FillValue NaN;
    Float32 actual_range 1710.092, 2139.954;
    String long_name "SAMI TA (umol/kg)";
    String units "umol/kg";
  }
  SST {
    Float32 _FillValue NaN;
    Float32 actual_range 4.187025, 15.32122;
    String long_name "Sea Surface Temperature";
    String standard_name "sea_surface_temperature";
    String units "degree_Celsius";
  }
  SWpCO2_SST {
    Float32 _FillValue NaN;
    Float32 actual_range 152.4502, 723.6065;
    String long_name "SWp CO2@SST (uatm)";
    String units "uatm";
  }
  SWfCO2_SST {
    Float32 _FillValue NaN;
    Float32 actual_range 152.4442, 723.5785;
    String long_name "SWf CO2@SST (uatm)";
    String units "uatm";
  }
  TA {
    Float32 _FillValue NaN;
    Float32 actual_range 1754.753, 2140.809;
    String description "From Evans Et Al., 2019 Relationship";
    String long_name "Total Alkalinity";
    String units "umol/kg";
  }
  TCO2 {
    Float32 _FillValue NaN;
    Float32 actual_range 1628.144, 2042.287;
    String long_name "TCO2 (umol/kg; Waters Et Al Constants)";
    String units "umol/kg";
  }
  pH_T {
    Float32 _FillValue NaN;
    Float32 actual_range 7.77141, 8.374042;
    String long_name "pH T (total Scale; Waters Et Al Constants)";
    String standard_name "sea_water_ph_reported_on_total_scale";
    String units "1";
  }
  Omega_arag {
    Float32 _FillValue NaN;
    Float32 actual_range 0.7466168, 2.694335;
    String long_name "Omega Arag (Waters Et Al Constants)";
  }
  Omega_calc {
    Float32 _FillValue NaN;
    Float32 actual_range 1.204772, 4.319445;
    String long_name "Omega Calc (Waters Et Al Constants)";
  }
  Revelle_factor {
    Float32 _FillValue NaN;
    Float32 actual_range 9.953995, 18.97245;
    String long_name "Revelle Factor (Waters Et Al Constants)";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "station_id, latitude, longitude";
    String contributor_email "wiley.evans at hakai.org";
    String contributor_name "Wiley Evans";
    String contributor_role "pointOfContact";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_email "data at hakai.org";
    String creator_name "Hakai Institute";
    String creator_url "https://www.hakai.org";
    String date_created "2014-12-19";
    Float64 Easternmost_Easting -131.5954;
    String featureType "TimeSeries";
    Float64 geospatial_lat_max 55.315;
    Float64 geospatial_lat_min 55.315;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -131.5954;
    Float64 geospatial_lon_min -131.5954;
    String geospatial_lon_units "degrees_east";
    String geospatial_vertical_max "2.0";
    String history 
"2024-09-08T02:08:43Z https://www.nodc.noaa.gov/ocads/data/0208638.xml
2024-09-08T02:08:43Z https://catalogue.hakai.org/tabledap/HakaiKetchikanBoLResearch.das";
    String infoUrl "https://www.hakai.org";
    String institution "Hakai Institute";
    String instrument "CTD-Divers,SUPERCO2,SBE 45,Burke-o-Lator pCO2/TCO2 analyzer";
    String keywords "British Columbia coast, CO2, Continuous measurement, Discrete measurement, inorganicCarbon, North Pacific Ocean, Northern Salish Sea, Ocean Acidification, Practical Salinity, Quadra Island, Sea Surface Practical Salinity, Sea Surface Temperature, seaSurfaceSalinity, seaSurfaceTemperature, Surface measurement";
    String license "Creative Commons Attribution 4.0 (CC-BY-4.0)";
    Float64 Northernmost_Northing 55.315;
    String platform "coastal structure";
    String platform_vocabulary "https://vocab.nerc.ac.uk/collection/L06/current/";
    String sourceUrl "https://www.nodc.noaa.gov/ocads/data/0208638.xml";
    Float64 Southernmost_Northing 55.315;
    String standard_name_vocabulary "CF Standard Name Table v79";
    String subsetVariables "station_id";
    String summary "This dataset includes continuous sea surface measurements of partial pressure of carbon dioxide (pCO2), sea surface temperature and salinity collected from Hakai Institute Quadra Island Field Station in Hyacinthe Bay, British Columbia, Canada. Quadra Island, at the northern terminus of the Salish Sea, has been a site for shore-based and high-resolution measurement of surface seawater CO2 content since December 2014. Measurements of in situ temperature, salinity, and CO2 partial pressure are made near-continuously on seawater drawn from a sample line with an intake 50 m from shore and a depth of 1 m in Hyacinthe Bay on the eastern side of Quadra Island. 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.";
    String time_coverage_end "2019-05-16T14:23:00Z";
    String time_coverage_start "2016-08-29T22:03:00Z";
    String title "High-resolution record of surface seawater CO2 content from the OceansAlaska Shellfish Hatchery in Ketchikan, Alaska, USA";
    Float64 Westernmost_Easting -131.5954;
  }
}

 

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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