BCO-DMO ERDDAP
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Dataset Title:	[HOT pTMs, 2020-2023] - Water column particulate metals from Hawaii Ocean Timeseries (HOT) R/V Kilo Moana cruises at station ALOHA, North Pacific Subtropical Gyre, from December 2020 to November 2023 (Quantifying Iron Turnover in the Upper Ocean via Time-series Measurements at Station ALOHA)
Institution:	BCO-DMO (Dataset ID: bcodmo_dataset_962966_v1)
Range:	longitude = -158.0 to -158.0°E, latitude = 22.75 to 22.75°N, depth = 15.0 to 900.0m, time = 2020-12-18T19:00:00Z to 2023-11-05T19:00:00Z
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 {
  Cruise {
    String long_name "Cruise";
    String units "unitless";
  }
  ISO_DateTime_Local {
    String long_name "Time";
    String units "unitless";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.608318e+9, 1.6992108e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "Time_utc";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Int32 actual_range -158, -158;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range 22.75, 22.75;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Int32 actual_range 15, 900;
    String axis "Z";
    String ioos_category "Location";
    String long_name "Depth";
    String positive "down";
    String standard_name "depth";
    String units "m";
  }
  pAl_labile {
    Float32 actual_range -0.094, 8.426;
    String long_name "Pal_labile";
    String units "nanomoles per liter (nmol/L)";
  }
  pAl_labile_qc {
    Int32 actual_range 2, 9;
    String long_name "Pal_labile_qc";
    String units "unitless";
  }
  pTi_labile {
    Float32 actual_range 0.0, 0.013;
    String long_name "Pti_labile";
    String units "nanomoles per liter (nmol/L)";
  }
  pTi_labile_qc {
    Int32 actual_range 2, 9;
    String long_name "Pti_labile_qc";
    String units "unitless";
  }
  pMn_labile {
    Float32 actual_range 0.0, 0.196;
    String long_name "Pmn_labile";
    String units "nanomoles per liter (nmol/L)";
  }
  pMn_labile_qc {
    Int32 actual_range 2, 9;
    String long_name "Pmn_labile_qc";
    String units "unitless";
  }
  pFe_labile {
    Float32 actual_range -0.02, 1.937;
    String long_name "Pfe_labile";
    String units "nanomoles per liter (nmol/L)";
  }
  pFe_labile_qc {
    Int32 actual_range 2, 9;
    String long_name "Pfe_labile_qc";
    String units "unitless";
  }
  pCo_labile {
    Float32 actual_range -3.0e-5, 0.00322;
    String long_name "Pco_labile";
    String units "nanomoles per liter (nmol/L)";
  }
  pCo_labile_qc {
    Int32 actual_range 2, 9;
    String long_name "Pco_labile_qc";
    String units "unitless";
  }
  pNi_labile {
    Float32 actual_range 0.0, 0.079;
    String long_name "Pni_labile";
    String units "nanomoles per liter (nmol/L)";
  }
  pNi_labile_qc {
    Int32 actual_range 2, 9;
    String long_name "Pni_labile_qc";
    String units "unitless";
  }
  pCu_labile {
    Float32 actual_range -0.002, 0.067;
    String long_name "Pcu_labile";
    String units "nanomoles per liter (nmol/L)";
  }
  pCu_labile_qc {
    Int32 actual_range 2, 9;
    String long_name "Pcu_labile_qc";
    String units "unitless";
  }
  pCd_labile {
    Float32 actual_range -1.0e-5, 0.00441;
    String long_name "Pcd_labile";
    String units "nanomoles per liter (nmol/L)";
  }
  pCd_labile_qc {
    Int32 actual_range 2, 9;
    String long_name "Pcd_labile_qc";
    String units "unitless";
  }
  pAl_recal {
    Float32 actual_range 0.0, 5.142;
    String long_name "Pal_recal";
    String units "nanomoles per liter (nmol/L)";
  }
  pAl_recal_qc {
    Int32 actual_range 2, 9;
    String long_name "Pal_recal_qc";
    String units "unitless";
  }
  pTi_recal {
    Float32 actual_range 0.0, 0.208;
    String long_name "Pti_recal";
    String units "nanomoles per liter (nmol/L)";
  }
  pTi_recal_qc {
    Int32 actual_range 2, 9;
    String long_name "Pti_recal_qc";
    String units "unitless";
  }
  pMn_recal {
    Float32 actual_range 0.0, 0.005;
    String long_name "Pmn_recal";
    String units "nanomoles per liter (nmol/L)";
  }
  pMn_recal_qc {
    Int32 actual_range 2, 9;
    String long_name "Pmn_recal_qc";
    String units "unitless";
  }
  pFe_recal {
    Float32 actual_range 0.0, 0.969;
    String long_name "Pfe_recal";
    String units "nanomoles per liter (nmol/L)";
  }
  pFe_recal_qc {
    Int32 actual_range 2, 9;
    String long_name "Pfe_recal_qc";
    String units "unitless";
  }
  pCo_recal {
    Float32 actual_range 0.0, 0.00167;
    String long_name "Pco_recal";
    String units "nanomoles per liter (nmol/L)";
  }
  pCo_recal_qc {
    Int32 actual_range 2, 9;
    String long_name "Pco_recal_qc";
    String units "unitless";
  }
  pNi_recal {
    Float32 actual_range 0.0, 0.024;
    String long_name "Pni_recal";
    String units "nanomoles per liter (nmol/L)";
  }
  pNi_recal_qc {
    Int32 actual_range 2, 9;
    String long_name "Pni_recal_qc";
    String units "unitless";
  }
  pCu_recal {
    Float32 actual_range 0.0, 0.281;
    String long_name "Pcu_recal";
    String units "nanomoles per liter (nmol/L)";
  }
  pCu_recal_qc {
    Int32 actual_range 2, 9;
    String long_name "Pcu_recal_qc";
    String units "unitless";
  }
  pCd_recal {
    Float32 actual_range 0.0, 0.00249;
    String long_name "Pcd_recal";
    String units "nanomoles per liter (nmol/L)";
  }
  pCd_recal_qc {
    Int32 actual_range 2, 9;
    String long_name "Pcd_recal_qc";
    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 defaultDataQuery "&amp;time&lt;now";
    String doi "10.26008/1912/bco-dmo.962966.1";
    Float64 Easternmost_Easting -158.0;
    Float64 geospatial_lat_max 22.75;
    Float64 geospatial_lat_min 22.75;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -158.0;
    Float64 geospatial_lon_min -158.0;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 900.0;
    Float64 geospatial_vertical_min 15.0;
    String geospatial_vertical_positive "down";
    String geospatial_vertical_units "m";
    String history 
"2025-09-09T17:14:21Z (local files)
2025-09-09T17:14:21Z https://erddap.bco-dmo.org/tabledap/bcodmo_dataset_962966_v1.das";
    String infoUrl "https://osprey.bco-dmo.org/dataset/962966";
    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 22.75;
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 22.75;
    String summary 
"We collected water column particulate metal samples onboard Hawaii Ocean Time-series (HOT) cruises between December 2020 and November 2023. All samples were collected at Station ALOHA. Samples were collected using a trace metal rosette and filtered onto 0.2 micron polyethersulfone (PES) filters (approx. 4L per sample). Approx. 11 depth samples were collected for each cruise within the upper 300 m of the water column.

Filters were subject to a 2-stage digestion: 1) a \"Berger\" leach consisting of hydoxylamine and acetic acid, to dissolve labile trace metals, and 2) a digestion with nitric acid and hydrofluoric acid to dissolve recalcitrant metals. Dissolved metals for each leach were analyzed by inductively coupled plasma mass spectrometry at the University of Hawaii at Manoa using a Thermo Scientific iCAP-TQ mass spectrometer. 

This dataset is part of a larger study focused on the cycling of trace metals in the North Pacific Subtropical Gyre, and is embedded within the HOT program.";
    String time_coverage_end "2023-11-05T19:00:00Z";
    String time_coverage_start "2020-12-18T19:00:00Z";
    String title "[HOT pTMs, 2020-2023] - Water column particulate metals from Hawaii Ocean Timeseries (HOT)  R/V Kilo Moana cruises at station ALOHA, North Pacific Subtropical Gyre, from December 2020 to November 2023 (Quantifying Iron Turnover in the Upper Ocean via Time-series Measurements at Station ALOHA)";
    Float64 Westernmost_Easting -158.0;
  }
}

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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