BCO-DMO ERDDAP
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Dataset Title:	[Noble gas isotope data from Oregon and Arizona groundwater] - Noble gas isotope data from field campaigns sampling groundwater in Umatilla, Oregon during September 2020 and in Tucson, Arizona during November 2021 (Collaborative Research: Novel constraints on air-sea gas exchange and deep ocean ventilation from high-precision noble gas isotope measurements in seawater)
Institution:	BCO-DMO (Dataset ID: bcodmo_dataset_897484_v1)
Range:	longitude = -119.81 to -110.73°E, latitude = 32.14 to 46.05°N
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Data Access Form \| Files

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  State_ID {
    String long_name "State_id";
    String units "unitless";
  }
  Location {
    String long_name "Location";
    String units "unitless";
  }
  Site {
    String long_name "Site";
    String units "unitless";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range 32.14, 46.05;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range -119.81, -110.73;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  Elevation_m {
    Int32 actual_range 139, 882;
    String long_name "Elevation_m";
    String units "meters (m)";
  }
  Elevation_ft {
    Int32 actual_range 455, 2894;
    String long_name "Elevation_ft";
    String units "feet (ft)";
  }
  Pressure_atm {
    Float32 actual_range 0.9, 0.983;
    String long_name "Pressure_atm";
    String units "atmosphere (atm)";
  }
  Mid_screen_depth_ft {
    Int32 actual_range 118, 1411;
    String long_name "Mid_screen_depth_ft";
    String units "feet (ft)";
  }
  Screen_length_ft {
    Int32 actual_range 20, 774;
    String long_name "Screen_length_ft";
    String units "feet (ft)";
  }
  Depth_to_water_ft {
    Int32 actual_range -171, 443;
    String long_name "Depth_to_water_ft";
    String units "feet (ft)";
  }
  Sampling_date {
    String long_name "Sampling_date";
    String units "unitless";
  }
  NG_method {
    String long_name "Ng_method";
    String units "unitless";
  }
  He {
    Float32 actual_range 6.34e-8, 1.88e-6;
    String long_name "He";
    String units "cubic centimeters per gram (cc/g)";
  }
  He_err {
    Float32 actual_range 1.59e-10, 4.7e-9;
    String long_name "He_err";
    String units "cubic centimeters per gram (cc/g)";
  }
  Ne {
    Float32 actual_range 2.09e-7, 7.14e-7;
    String long_name "Ne";
    String units "cubic centimeters per gram (cc/g)";
  }
  Ne_err {
    Float32 actual_range 5.21e-10, 2.0e-8;
    String long_name "Ne_err";
    String units "cubic centimeters per gram (cc/g)";
  }
  Ar {
    Float32 actual_range 3.01e-4, 5.71e-4;
    String long_name "Ar";
    String units "cubic centimeters per gram (cc/g)";
  }
  Ar_err {
    Float32 actual_range 6.96e-7, 3.07e-6;
    String long_name "Ar_err";
    String units "cubic centimeters per gram (cc/g)";
  }
  Kr {
    Float32 actual_range 6.47e-8, 1.03e-7;
    String long_name "Kr";
    String units "cubic centimeters per gram (cc/g)";
  }
  Kr_err {
    Float32 actual_range 2.19e-10, 4.79e-10;
    String long_name "Kr_err";
    String units "cubic centimeters per gram (cc/g)";
  }
  Xe {
    Float32 actual_range 8.71e-9, 1.44e-8;
    String long_name "Xe";
    String units "cubic centimeters per gram (cc/g)";
  }
  Xe_err {
    Float32 actual_range 2.47e-11, 6.04e-11;
    String long_name "Xe_err";
    String units "cubic centimeters per gram (cc/g)";
  }
  dXe {
    Float32 actual_range 0.032, 0.172;
    String long_name "Dxe";
    String units "per mil (‰)";
  }
  dKr {
    Float32 actual_range 0.073, 0.18;
    String long_name "Dkr";
    String units "per mil (‰)";
  }
  d40_36_Ar {
    Float32 actual_range 0.735, 2.58;
    String long_name "D40_36_ar";
    String units "per mil (‰)";
  }
  d40_36_err {
    Float32 actual_range 0.002, 0.029;
    String long_name "D40_36_err";
    String units "per mil (‰)";
  }
  d38_36_Ar {
    Float32 actual_range 0.379, 0.709;
    String long_name "D38_36_ar";
    String units "per mil (‰)";
  }
  d38_36_err {
    Float32 actual_range 0.002, 0.014;
    String long_name "D38_36_err";
    String units "per mil (‰)";
  }
  d86_82_Kr {
    Float32 actual_range 0.32, 0.749;
    String long_name "D86_82_kr";
    String units "per mil (‰)";
  }
  d86_82_err {
    Float32 actual_range 0.002, 0.032;
    String long_name "D86_82_err";
    String units "per mil (‰)";
  }
  d86_83_Kr {
    Float32 actual_range 0.183, 0.536;
    String long_name "D86_83_kr";
    String units "per mil (‰)";
  }
  d86_83_err {
    Float32 actual_range 0.0, 0.031;
    String long_name "D86_83_err";
    String units "per mil (‰)";
  }
  d86_84_Kr {
    Float32 actual_range 0.129, 0.362;
    String long_name "D86_84_kr";
    String units "per mil (‰)";
  }
  d86_84_err {
    Float32 actual_range 0.0, 0.02;
    String long_name "D86_84_err";
    String units "per mil (‰)";
  }
  d136_129_Xe {
    Float32 actual_range 0.266, 1.128;
    String long_name "D136_129_xe";
    String units "per mil (‰)";
  }
  d136_129_err {
    Float32 actual_range 0.01, 0.122;
    String long_name "D136_129_err";
    String units "per mil (‰)";
  }
  d134_129_Xe {
    Float32 actual_range 0.138, 0.807;
    String long_name "D134_129_xe";
    String units "per mil (‰)";
  }
  d134_129_err {
    Float32 actual_range 0.001, 0.118;
    String long_name "D134_129_err";
    String units "per mil (‰)";
  }
  d132_129_Xe {
    Float32 actual_range 0.058, 0.532;
    String long_name "D132_129_xe";
    String units "per mil (‰)";
  }
  d132_129_err {
    Float32 actual_range 0.009, 0.075;
    String long_name "D132_129_err";
    String units "per mil (‰)";
  }
  WTD {
    Float32 actual_range 3.8, 38.3;
    String long_name "Wtd";
    String units "meters (m)";
  }
  WTD_err {
    Float32 actual_range 0.2, 1.8;
    String long_name "Wtd_err";
    String units "meters (m)";
  }
 }
  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.897484.1";
    Float64 Easternmost_Easting -110.73;
    Float64 geospatial_lat_max 46.05;
    Float64 geospatial_lat_min 32.14;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -110.73;
    Float64 geospatial_lon_min -119.81;
    String geospatial_lon_units "degrees_east";
    String history 
"2024-10-20T10:58:41Z (local files)
2024-10-20T10:58:41Z https://erddap.bco-dmo.org/tabledap/bcodmo_dataset_897484_v1.das";
    String infoUrl "https://www.bco-dmo.org/dataset/897484";
    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.";
    Float64 Northernmost_Northing 46.05;
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 32.14;
    String summary "This project developed a novel seawater and groundwater noble gas isotope extraction technique, building on an approach pioneered by Dr. Steve Emerson that involves equilibration of headspace and water followed by vacuum removal and disposal of almost all the water. Corrections are then made for the lost noble gas in the water, using precisely measured mass and volume. The method uses 6-liter stainless steel flasks with Nupro valves for improved leak-tightness. This extraction technique made it possible to measure neon as well as the heavier noble-gas isotopes, all from the same sample, providing a constraint on \"excess air\" using the neon. Field campaigns sampling groundwater were conducted in Oregon and Arizona. Data from these campaigns are deposited here.";
    String title "[Noble gas isotope data from Oregon and Arizona groundwater] - Noble gas isotope data from field campaigns sampling groundwater in Umatilla, Oregon during September 2020 and in Tucson, Arizona during November 2021 (Collaborative Research: Novel constraints on air-sea gas exchange and deep ocean ventilation from high-precision noble gas isotope measurements in seawater)";
    Float64 Westernmost_Easting -119.81;
  }
}

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.

(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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