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Dataset Title:  SeapHOx sensor at Agua Hedionda Lagoon   RSS
Institution:  Scripps Institution of Oceanography   (Dataset ID: pH-AHL)
Range: longitude = -117.3275 to -117.3275°E, latitude = 33.1425 to 33.1425°N, time = 2019-08-22T17:00:25Z to 2021-01-06T05:04:48Z
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Subset | Data Access Form
 
Graph Type:  ?
X Axis: 
Y Axis: 
Color: 
-1+1
 
Constraints ? Optional
Constraint #1 ?
Optional
Constraint #2 ?
       
       
       
       
       
 
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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   Minimum:   Maximum:   N Sections: 
Draw land mask: 
Y Axis Minimum:   Maximum:   
 
(Please be patient. It may take a while to get the data.)
 
Optional:
Then set the File Type: (File Type information)
and
or view the URL:
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    Click on the map to specify a new center point. ?
Zoom: 
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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 {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.566493225e+9, 1.609909488e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "Date Time UTC";
    String source_name "Date_Time_UTC";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  station {
    String actual_range 
"AHL
AHL";
    String cf_role "timeseries_id";
    String ioos_category "Identifier";
    String long_name "Station";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range 33.1425, 33.1425;
    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 -117.3275, -117.3275;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String ioos_category "Location";
    String long_name "Longitude";
    String source_name "long";
    String standard_name "longitude";
    String units "degrees_east";
  }
  pH_total {
    Float64 actual_range 6.02793321222723, 8.78532323465636;
    String ioos_category "Salinity";
    String long_name "P H Total";
    String standard_name "ph";
  }
  pH_QCflag {
    String _Unsigned "false";
    Byte actual_range 1, 1;
    Float64 colorBarMaximum 150.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Quality";
    String long_name "P H QCflag";
  }
  O2_umol_per_kg {
    Float64 actual_range 2.4266681351545, 4571.24545919976;
    String ioos_category "Dissolved O2";
    String long_name "O2 Umol Per Kg";
    String standard_name "mole_concentration_of_dissolved_molecular_oxygen_in_sea_water";
  }
  Temp_C {
    Float32 actual_range 9.3017, 294.368;
    String ioos_category "Temperature";
    String long_name "Temp C";
    String standard_name "sea_water_temperature";
  }
  Sal_PSS {
    Float32 actual_range 15.1525, 39.0908;
    String ioos_category "Dissolved Nutrients";
    String long_name "Sal PSS";
    String standard_name "sea_water_practical_salinity";
  }
  Pressure_dbar {
    Float32 actual_range 0.0, 7.491;
    String ioos_category "Pressure";
    String long_name "Pressure";
    String standard_name "sea_water_pressure";
    String units "dbar";
  }
  Omega_Ar {
    Float64 actual_range 0.0289251593910595, 173217.263372898;
    String ioos_category "Unknown";
    String long_name "Omega Ar";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "station, longitude, latitude";
    String Conventions "ACDD-1.3, COARDS, CF-1.6";
    String creator_email "trmartz@ucsd.edu";
    String creator_name "Todd Martz";
    String creator_type "person";
    String creator_url "https://sio.ucsd.edu";
    Float64 Easternmost_Easting -117.3275;
    String featureType "TimeSeries";
    Float64 geospatial_lat_max 33.1425;
    Float64 geospatial_lat_min 33.1425;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -117.3275;
    Float64 geospatial_lon_min -117.3275;
    String geospatial_lon_units "degrees_east";
    String history 
"2021-10-26T23:51:37Z (local files)
2021-10-26T23:51:37Z http://erddap.sccoos.org/tabledap/pH-AHL.das";
    String infoUrl "https://sio.ucsd.edu";
    String institution "Scripps Institution of Oceanography";
    String keywords "agua, altimetry, data, date, dbar, dissolved, dissolved o2, hedionda, identifier, institution, laboratory, lagoon, latitude, local, longitude, molkg, O2, O2_umol_per_kg, oceanography, omega, Omega_Ar, oxygen, per, pH_QCflag, pH_total, practical, pressure, Pressure_dbar, pss, qcflag, quality, sal, Sal_PSS, salinity, satellite, scale, scripps, seaphox, sensor, source, station, Temp_C, temperature, time, total, umol";
    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 33.1425;
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 33.1425;
    String standard_name_vocabulary "CF Standard Name Table v29";
    String subsetVariables "station, latitude, longitude";
    String summary 
"Chief Scientist: Todd Martz
Function:  Measuring Ocean Acidification in the Field.  The SeapHOx can measure not only the pH of seawater but other crucial parameters such as dissolved oxygen, temperature, and salinity.  This data was collected from a SeapHOx sensor mounted on a mooring in the outer lagoon area of Agua Hedionda.  Data collection started in 2019 and is ongoing.";
    String testOutOfDate "now-1day";
    String time_coverage_end "2021-01-06T05:04:48Z";
    String time_coverage_start "2019-08-22T17:00:25Z";
    String title "SeapHOx sensor at Agua Hedionda Lagoon";
    Float64 Westernmost_Easting -117.3275;
  }
}

 

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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