Accessing BCO-DMO data
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BCO-DMO ERDDAP
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| Dataset Title: | [OOI Station Papa CTD and Water Sampling Data] - OOI Global Station Papa Array CTD and Discrete Water Sampling Data from Mooring Overturning Cruises in the Gulf of Alaska from 2013 to 2023 (OOI Cruise Data project) (OOI Discrete CTD and Water Sampling Cruise Data) 
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| Institution: | BCO-DMO (Dataset ID: bcodmo_dataset_923122_v1) |
| Range: | longitude = -147.4738 to 144.9604°E, latitude = 41.92514 to 56.00937°N, depth = 1.797 to 4214.441m |
| Information: | Summary
| License
| FGDC
| ISO 19115
| Metadata
| Background
| Data Access Form
| Files
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Zoom: ![[The graph you specified. Please be patient.]](https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_923122_v1.png?longitude,latitude,Start_Latitude&.draw=markers&.marker=5%7C5&.color=0x000000&.colorBar=%7C%7C%7C%7C%7C&.bgColor=0xffccccff)
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Attributes {
s {
Cruise {
String long_name "Cruise";
String units "unitless";
}
Station {
String long_name "Station";
String units "unitless";
}
Target_Asset {
String long_name "Target_asset";
String units "unitless";
}
Start_Latitude {
Float32 actual_range 41.92515, 58.03005;
String long_name "Start_latitude";
String units "decimal degrees";
}
Start_Longitude {
Float32 actual_range -148.8211, -126.9033;
String long_name "Start_longitude";
String units "decimal degrees";
}
Start_Time {
String long_name "Start_time";
String units "unitless";
}
Cast {
String long_name "Cast";
String units "unitless";
}
Cast_Flag {
String long_name "Cast_flag";
String units "unitless";
}
Bottom_Depth_at_Start_Position {
Float32 actual_range 2606.0, 4256.0;
String long_name "Bottom_depth_at_start_position";
String units "meters (m)";
}
CTD_File {
String long_name "Ctd_file";
String units "unitless";
}
CTD_File_Flag {
String long_name "Ctd_file_flag";
String units "unitless";
}
Niskin_Bottle_Position {
Int32 actual_range 1, 24;
String long_name "Niskin_bottle_position";
String units "unitless";
}
Niskin_Flag {
String long_name "Niskin_flag";
String units "unitless";
}
CTD_Bottle_Closure_Time {
String long_name "Ctd_bottle_closure_time";
String units "unitless";
}
CTD_Pressure {
Float32 actual_range 1.812, 4293.808;
String long_name "Ctd_pressure";
String units "db";
}
CTD_Pressure_Flag {
String long_name "Ctd_pressure_flag";
String units "unitless";
}
depth {
String _CoordinateAxisType "Height";
String _CoordinateZisPositive "down";
Float32 actual_range 1.797, 4214.441;
String axis "Z";
String ioos_category "Location";
String long_name "Ctd_depth";
String positive "down";
String standard_name "depth";
String units "m";
}
latitude {
String _CoordinateAxisType "Lat";
Float32 actual_range 41.92514, 56.00937;
String axis "Y";
String ioos_category "Location";
String long_name "Ctd_latitude";
String standard_name "latitude";
String units "degrees_north";
}
longitude {
String _CoordinateAxisType "Lon";
Float32 actual_range -147.4738, 144.9604;
String axis "X";
String ioos_category "Location";
String long_name "Ctd_longitude";
String standard_name "longitude";
String units "degrees_east";
}
CTD_Temperature_1 {
Float32 actual_range 1.4955, 18.1925;
String long_name "Ctd_temperature_1";
String units "deg C";
}
CTD_Temperature_1_Flag {
String long_name "Ctd_temperature_1_flag";
String units "unitless";
}
CTD_Temperature_2 {
Float32 actual_range 1.4935, 50.9277;
String long_name "Ctd_temperature_2";
String units "deg C";
}
CTD_Temperature_2_Flag {
String long_name "Ctd_temperature_2_flag";
String units "unitless";
}
CTD_Conductivity_1 {
Float32 actual_range 3.055826, 99.0;
String long_name "Ctd_conductivity_1";
String units "S/m";
}
CTD_Conductivity_1_Flag {
String long_name "Ctd_conductivity_1_flag";
String units "unitless";
}
CTD_Conductivity_2 {
Float32 actual_range 1.172675, 4.286057;
String long_name "Ctd_conductivity_2";
String units "S/m";
}
CTD_Conductivity_2_Flag {
String long_name "Ctd_conductivity_2_flag";
String units "unitless";
}
CTD_Salinity_1 {
Float32 actual_range 32.1523, 1999.0;
String long_name "Ctd_salinity_1";
String units "PSU";
}
CTD_Salinity_2 {
Float32 actual_range 11.7421, 34.6944;
String long_name "Ctd_salinity_2";
String units "PSU";
}
CTD_Oxygen {
Float32 actual_range -6.3627, 32.2682;
String long_name "Ctd_oxygen";
String units "mL/L";
}
CTD_Oxygen_Flag {
String long_name "Ctd_oxygen_flag";
String units "unitless";
}
CTD_Oxygen_Saturation {
Float32 actual_range -99.0, 7.72703;
String long_name "Ctd_oxygen_saturation";
String units "mL/L";
}
CTD_Fluorescence {
Float32 actual_range -0.0984, 20.0585;
String long_name "Ctd_fluorescence";
String units "mg/m^3";
}
CTD_Fluorescence_Flag {
String long_name "Ctd_fluorescence_flag";
String units "unitless";
}
CTD_Beam_Attenuation {
Float32 actual_range -0.0041, 1.3342;
String long_name "Ctd_beam_attenuation";
String units "1/m";
}
CTD_Beam_Transmission {
Float32 actual_range 71.637, 100.1023;
String long_name "Ctd_beam_transmission";
String units "%";
}
CTD_Transmissometer_Flag {
String long_name "Ctd_transmissometer_flag";
String units "unitless";
}
CTD_pH {
String long_name "Ctd_ph";
String units "unitless";
}
CTD_pH_Flag {
String long_name "Ctd_ph_flag";
String units "unitless";
}
Discrete_Oxygen {
Float32 actual_range 0.0, 7.511;
String long_name "Discrete_oxygen";
String units "mL/L";
}
Discrete_Oxygen_Flag {
String long_name "Discrete_oxygen_flag";
String units "unitless";
}
Discrete_Oxygen_Replicate_Flag {
String long_name "Discrete_oxygen_replicate_flag";
String units "unitless";
}
Discrete_Chlorophyll {
Float32 actual_range -0.001171024, 4.723662;
String long_name "Discrete_chlorophyll";
String units "ug/L";
}
Discrete_Phaeopigment {
Float32 actual_range -0.02925345, 1.797817;
String long_name "Discrete_phaeopigment";
String units "ug/L";
}
Discrete_Fo_Fa_Ratio {
String long_name "Discrete_fo_fa_ratio";
String units "unitless";
}
Discrete_Fluorescence_Flag {
String long_name "Discrete_fluorescence_flag";
String units "unitless";
}
Discrete_Fluorescence_Replicate_Flag {
String long_name "Discrete_fluorescence_replicate_flag";
String units "unitless";
}
Discrete_Phosphate {
Float32 actual_range 0.661, 3.32;
String long_name "Discrete_phosphate";
String units "uM";
}
Discrete_Silicate {
Float32 actual_range 0.811, 171.21;
String long_name "Discrete_silicate";
String units "uM";
}
Discrete_Nitrate {
Float32 actual_range 1.285, 46.65;
String long_name "Discrete_nitrate";
String units "uM";
}
Discrete_Nitrite {
Float32 actual_range -0.09, 0.252;
String long_name "Discrete_nitrite";
String units "uM";
}
Discrete_Ammonium {
Float32 actual_range -0.011, 2.895;
String long_name "Discrete_ammonium";
String units "uM";
}
Discrete_Nutrients_Flag {
String long_name "Discrete_nutrients_flag";
String units "unitless";
}
Discrete_Nutrients_Replicate_Flag {
String long_name "Discrete_nutrients_replicate_flag";
String units "unitless";
}
Discrete_Salinity {
Float32 actual_range 0.0, 34.6931;
String long_name "Discrete_salinity";
String units "psu";
}
Discrete_Salinity_Flag {
String long_name "Discrete_salinity_flag";
String units "unitless";
}
Discrete_Salinity_Replicate_Flag {
String long_name "Discrete_salinity_replicate_flag";
String units "unitless";
}
Discrete_Alkalinity {
Float32 actual_range 2164.33, 2370.4;
String long_name "Discrete_alkalinity";
String units "umol/kg";
}
Discrete_Alkalinity_Flag {
String long_name "Discrete_alkalinity_flag";
String units "unitless";
}
Discrete_Alkalinity_Replicate_Flag {
String long_name "Discrete_alkalinity_replicate_flag";
String units "unitless";
}
Discrete_DIC {
Float32 actual_range 1978.98, 2435.71;
String long_name "Discrete_dic";
String units "umol/kg";
}
Discrete_DIC_Flag {
String long_name "Discrete_dic_flag";
String units "unitless";
}
Discrete_DIC_Replicate_Flag {
String long_name "Discrete_dic_replicate_flag";
String units "unitless";
}
Discrete_pCO2 {
Float32 actual_range 322.0, 1219.42;
String long_name "Discrete_pco2";
String units "uatm";
}
pCO2_Analysis_Temp {
Float32 actual_range 20.3, 22.9;
String long_name "Pco2_analysis_temp";
String units "deg C";
}
Discrete_pCO2_Flag {
String long_name "Discrete_pco2_flag";
String units "unitless";
}
Discrete_pCO2_Replicate_Flag {
String long_name "Discrete_pco2_replicate_flag";
String units "unitless";
}
Discrete_pH {
Float32 actual_range 7.8114, 7.899;
String long_name "Discrete_ph";
String units "unitless";
}
pH_Analysis_Temp {
Int32 actual_range 25, 25;
String long_name "Ph_analysis_temp";
String units "deg C";
}
Discrete_pH_Flag {
String long_name "Discrete_ph_flag";
String units "unitless";
}
Discrete_pH_Replicate_Flag {
String long_name "Discrete_ph_replicate_flag";
String units "unitless";
}
Calculated_Alkalinity {
Float32 actual_range 2207.38, 2469.15;
String long_name "Calculated_alkalinity";
String units "umol/kg";
}
Calculated_DIC {
Float32 actual_range 2018.45, 2426.41;
String long_name "Calculated_dic";
String units "umol/kg";
}
Calculated_pCO2 {
Float32 actual_range 322.0, 1017.25;
String long_name "Calculated_pco2";
String units "uatm";
}
Calculated_pH {
Float32 actual_range 7.552, 8.123;
String long_name "Calculated_ph";
String units "unitless";
}
Calculated_CO2aq {
Float32 actual_range 13.87, 68.68;
String long_name "Calculated_co2aq";
String units "umol/kg";
}
Calculated_Bicarb {
Float32 actual_range 1863.63, 2324.71;
String long_name "Calculated_bicarb";
String units "umol/kg";
}
Calculated_CO3 {
Float32 actual_range 40.11, 147.93;
String long_name "Calculated_co3";
String units "umol/kg";
}
Calculated_Omega_C {
Float32 actual_range 0.713, 3.482;
String long_name "Calculated_omega_c";
String units "unitless";
}
Calculated_Omega_A {
Float32 actual_range 0.48, 2.266;
String long_name "Calculated_omega_a";
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.923122.1";
Float64 Easternmost_Easting 144.9604;
Float64 geospatial_lat_max 56.00937;
Float64 geospatial_lat_min 41.92514;
String geospatial_lat_units "degrees_north";
Float64 geospatial_lon_max 144.9604;
Float64 geospatial_lon_min -147.4738;
String geospatial_lon_units "degrees_east";
Float64 geospatial_vertical_max 4214.441;
Float64 geospatial_vertical_min 1.797;
String geospatial_vertical_positive "down";
String geospatial_vertical_units "m";
String history
"2025-07-30T00:10:58Z (local files)
2025-07-30T00:10:58Z https://erddap.bco-dmo.org/tabledap/bcodmo_dataset_923122_v1.das";
String infoUrl "https://www.bco-dmo.org/dataset/923122";
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 56.00937;
String sourceUrl "(local files)";
Float64 Southernmost_Northing 41.92514;
String summary
"The hydrographic sampling performed by OOI-CGSN (the Ocean Observatories Initiative - Coastal and Global Scale Nodes) as part of each Array turn represents a significant collection of valuable physical, chemical, and biological information. In addition to the CTD, collected hydrographic data include discrete oxygen, salinity, nutrient (nitrate, nitrite, silicate, phosphate, ammonium), chlorophyll, and carbon system measurements. These data serve several important functions. First, they are necessary for the calibration and evaluation of the moored instrumentation at each Array. Furthermore, the annual (Global) or biannual (Coastal) collection of data at the same locations provides a unique time series of a large set of water properties following established community standards and methods, independent of its association with the OOI moorings.
The analyses of collected water samples for the parameters listed above are performed by a number of outside labs on behalf of OOI-CGSN. Consequently, the water sampling data for a given cruise is distributed among a number of different files. The Discrete Sampling Summary integrates the related CTD, metadata, and discrete water sample data into a single file. Additionally, it synthesizes qualitative and quantitative information about the quality of a measurement into data quality flags for each associated parameter which follow WOCE-standards.
The final product is the Discrete Sampling Summary spreadsheet which contains the metadata, CTD data and discrete water sample data into a single spreadsheet with data quality flags.
This dataset includes hydrographic data from the Global Station Papa Array located in the Gulf of Alaska next to the NOAA Pacific Marine Environmental Laboratory (PMEL) Surface Buoy. The region is extremely vulnerable to ocean acidification, has a productive fishery, and low eddy variability. It is impacted by the Pacific Decadal Oscillation and adds to a broader suite of OOI and other observatory sites in the Northeast Pacific.";
String title "[OOI Station Papa CTD and Water Sampling Data] - OOI Global Station Papa Array CTD and Discrete Water Sampling Data from Mooring Overturning Cruises in the Gulf of Alaska from 2013 to 2023 (OOI Cruise Data project) (OOI Discrete CTD and Water Sampling Cruise Data)";
Float64 Westernmost_Easting -147.4738;
}
}
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.
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.