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Dataset Title:	[Subterranean Estuary In Situ Tracer Experiment Incubation Data, 2019] - In situ tracer injection experiment conducted with 15N-labeled ammonium in a shallow, sandy subterranean estuary in Gloucester Point, USA in August 2019. (Collaborative Research: Cryptic nitrogen cycling in the anoxic subterranean estuary)
Institution:	BCO-DMO   (Dataset ID: bcodmo_dataset_917767_v1)
Range:	longitude = -76.50533 to -76.50533°E
Information:	Summary | License | Metadata | Background | Data Access Form | Files

 

Graph Type:  lines linesAndMarkers markers sticks X Axis:  Latitude longitude Hours_after_Injection Bromide_uM Chloride_mM SF6_ppbv SF6_pM Nox_uM NO2_uM NH4_uM True_d15N Mole_Fraction_Calc Y Axis:  Latitude longitude Hours_after_Injection Bromide_uM Chloride_mM SF6_ppbv SF6_pM Nox_uM NO2_uM NH4_uM True_d15N Mole_Fraction_Calc Color:  Latitude longitude Hours_after_Injection Bromide_uM Chloride_mM SF6_ppbv SF6_pM Nox_uM NO2_uM NH4_uM True_d15N Mole_Fraction_Calc   Constraints Optional Constraint #1 Optional Constraint #2 Site_Name Latitude longitude Piezometer Sample_ID Time_Point Date Time Hours_after_Injection Bromide_uM Chloride_mM SF6_ppbv SF6_pM Nox_uM NO2_uM NH4_uM True_d15N Mole_Fraction_Calc     != =~ <= >= = < >     != =~ <= >= = < > Site_Name Latitude longitude Piezometer Sample_ID Time_Point Date Time Hours_after_Injection Bromide_uM Chloride_mM SF6_ppbv SF6_pM Nox_uM NO2_uM NH4_uM True_d15N Mole_Fraction_Calc     != =~ <= >= = < >     != =~ <= >= = < > Site_Name Latitude longitude Piezometer Sample_ID Time_Point Date Time Hours_after_Injection Bromide_uM Chloride_mM SF6_ppbv SF6_pM Nox_uM NO2_uM NH4_uM True_d15N Mole_Fraction_Calc     != =~ <= >= = < >     != =~ <= >= = < > Site_Name Latitude longitude Piezometer Sample_ID Time_Point Date Time Hours_after_Injection Bromide_uM Chloride_mM SF6_ppbv SF6_pM Nox_uM NO2_uM NH4_uM True_d15N Mole_Fraction_Calc     != =~ <= >= = < >     != =~ <= >= = < > Site_Name Latitude longitude Piezometer Sample_ID Time_Point Date Time Hours_after_Injection Bromide_uM Chloride_mM SF6_ppbv SF6_pM Nox_uM NO2_uM NH4_uM True_d15N Mole_Fraction_Calc     != =~ <= >= = < >     != =~ <= >= = < >   Server-side Functions  distinct() orderBy orderByDescending orderByClosest orderByCount orderByLimit orderByMax orderByMin orderByMinMax orderByMean orderBySum (" Site_Name Latitude longitude Piezometer Sample_ID Time_Point Date Time Hours_after_Injection Bromide_uM Chloride_mM SF6_ppbv SF6_pM Nox_uM NO2_uM NH4_uM True_d15N Mole_Fraction_Calc Site_Name Latitude longitude Piezometer Sample_ID Time_Point Date Time Hours_after_Injection Bromide_uM Chloride_mM SF6_ppbv SF6_pM Nox_uM NO2_uM NH4_uM True_d15N Mole_Fraction_Calc Site_Name Latitude longitude Piezometer Sample_ID Time_Point Date Time Hours_after_Injection Bromide_uM Chloride_mM SF6_ppbv SF6_pM Nox_uM NO2_uM NH4_uM True_d15N Mole_Fraction_Calc Site_Name Latitude longitude Piezometer Sample_ID Time_Point Date Time Hours_after_Injection Bromide_uM Chloride_mM SF6_ppbv SF6_pM Nox_uM NO2_uM NH4_uM True_d15N Mole_Fraction_Calc ")   Graph Settings Marker Type:  None Plus X Dot Square Filled Square Circle Filled Circle Up Triangle Filled Up Triangle Borderless Filled Square Borderless Filled Circle Borderless Filled Up Triangle  Size:  3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Color:  Color Bar:  BlackBlueWhite BlackGreenWhite BlackRedWhite BlackWhite BlueWhiteRed BlueWideWhiteRed LightRainbow Ocean OceanDepth Rainbow Rainbow2 Rainfall ReverseRainbow RedWhiteBlue RedWhiteBlue2 RedWideWhiteBlue Spectrum Topography TopographyDepth WhiteBlueBlack WhiteGreenBlack WhiteRedBlack WhiteBlack YellowRed KT_algae KT_amp KT_balance KT_curl KT_deep KT_delta KT_dense KT_gray KT_haline KT_ice KT_matter KT_oxy KT_phase KT_solar KT_speed KT_tempo KT_thermal KT_turbid  Continuity:  Continuous Discrete  Scale:  Linear Log    Minimum:   Maximum:   N Sections:  2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 Y Axis Minimum:   Maximum:    Ascending Descending Linear Log   Redraw the Graph (Please be patient. It may take a while to get the data.)   Optional: Then set the File Type: .asc .csv .csvp .csv0 .dataTable .das .dds .dods .esriCsv .fgdc .geoJson .graph .help .html .htmlTable .iso19115 .itx .json .jsonlCSV1 .jsonlCSV .jsonlKVP .mat .nc .ncHeader .ncCF .ncCFHeader .ncCFMA .ncCFMAHeader .nccsv .nccsvMetadata .ncoJson .odvTxt .subset .tsv .tsvp .tsv0 .wav .xhtml .kml .smallPdf .pdf .largePdf .smallPng .png .largePng .transparentPng (File Type information) and or view the URL: (Documentation / Bypass this form )

 

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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.
   

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  Site_Name {
    String long_name "Site_name";
    String units "unitless";
  }
  Latitude {
    Float32 actual_range 37.24888, 37.24888;
    String long_name "Latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range -76.50533, -76.50533;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  Piezometer {
    String long_name "Piezometer";
    String units "unitless";
  }
  Sample_ID {
    String long_name "Sample_id";
    String units "unitless";
  }
  Time_Point {
    String long_name "Time_point";
    String units "unitless";
  }
  Date {
    String long_name "Date";
    String units "unitless";
  }
  Time {
    String long_name "Time";
    String units "unitless";
  }
  Hours_after_Injection {
    Float32 actual_range 0.0, 71.5;
    String long_name "Hours_after_injection";
    String units "hours (hrs)";
  }
  Bromide_uM {
    Float32 actual_range 326.44, 3452.49;
    String long_name "Bromide_um";
    String units "micromoles per liter (uM)";
  }
  Chloride_mM {
    Float32 actual_range 196.28, 1034.61;
    String long_name "Chloride_mm";
    String units "millimoles per liter (mM";
  }
  SF6_ppbv {
    Float32 actual_range 0.0, 6.03;
    String long_name "Sf6_ppbv";
    String units "parts per billion per volume (ppbv)";
  }
  SF6_pM {
    Float32 actual_range 0.0, 1446.61;
    String long_name "Sf6_pm";
    String units "picoMolar (pM)";
  }
  Nox_uM {
    Float32 actual_range 0.07, 201.93;
    String long_name "Nox_um";
    String units "micromoles per liter (uM)";
  }
  NO2_uM {
    Float32 actual_range 0.06, 0.22;
    String long_name "No2_um";
    String units "micromoles per liter (uM)";
  }
  NH4_uM {
    Float32 actual_range 0.53, 14.51;
    String long_name "Nh4_um";
    String units "micromoles per liter (uM)";
  }
  True_d15N {
    Float32 actual_range 6.84, 7202.29;
    String long_name "True_d15n";
    String units "parts per thousand (‰)";
  }
  Mole_Fraction_Calc {
    Float32 actual_range 0.00369, 0.0293;
    String long_name "Mole_fraction_calc";
    String units "unitless";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Other";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_email "info@bco-dmo.org";
    String creator_name "BCO-DMO";
    String creator_url "https://www.bco-dmo.org/";
    String doi "10.26008/1912/bco-dmo.917767.1";
    Float64 Easternmost_Easting -76.50533;
    Float64 geospatial_lon_max -76.50533;
    Float64 geospatial_lon_min -76.50533;
    String geospatial_lon_units "degrees_east";
    String history 
"2024-11-21T11:36:30Z (local files)
2024-11-21T11:36:30Z https://erddap.bco-dmo.org/tabledap/bcodmo_dataset_917767_v1.das";
    String infoUrl "https://www.bco-dmo.org/dataset/917767";
    String institution "BCO-DMO";
    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.";
    String sourceUrl "(local files)";
    String summary 
"These data are the result of an in situ tracer injection experiment conducted with 15N-labeled ammonium to determine the fate and transport rates of ammonium within a shallow, sandy subterranean estuary in Gloucester Point, VA, USA. 

Replicate injections of 15N-labeled ammonium, sulfur hexaflouride, and bromide amended porewater were injected into piezometers at 50cm.  Porewater was then collected overtime from the injection piezometers and tracer piezometers surrounding the injection site ranging in depth from 40-60cm.  At each time point, samples were collected to analyze dissolved inorganic nitrogen (nitrate, nitrite, and ammonium) concentrations, sulfur hexaflouride, bromide, chloride. Nitrate and nitrite samples from porewater were analyzed with an isotope ratio mass spectrometer in order to assess the 15N enrichment of the nitrate in each sample resulting in a delta value (d15N) that allows for the calculation of the mole fraction of 15N-labeled nitrite and nitrate in porewater at each time point. The production or consumption over time constitutes subterranean estuary nitrogen cycling rates (e.g. nitrification, denitrification, etc.).";
    String title "[Subterranean Estuary In Situ Tracer Experiment Incubation Data, 2019] - In situ tracer injection experiment conducted with 15N-labeled ammonium in a shallow, sandy subterranean estuary in Gloucester Point, USA  in August 2019. (Collaborative Research:  Cryptic nitrogen cycling in the anoxic subterranean estuary)";
    Float64 Westernmost_Easting -76.50533;
  }
}

 

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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.

 

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