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Dataset Title:	[Boric acid dissociation constants in freshwater and marine conditions] - Boric acid dissociation constants (pKB) from spectrophotometrically calibrated electrode measurements made in natural seawater across estuarine to open-ocean conditions (Spectrophotometric Determinations of Carbonic Acid Dissociation Constants for Estuarine Conditions)
Institution:	BCO-DMO   (Dataset ID: bcodmo_dataset_1000973_v1)
Information:	Summary | License | Metadata | Background | Files | Make a graph

 

Variable	Optional Constraint #1		Optional Constraint #2		Minimum	Maximum
source (unitless)	!= =~ <= >= = < >		!= =~ <= >= = < >		"D90"	"MMB26"
Target_t_C (degrees Celsius (°C))	!= =~ <= >= = < >		!= =~ <= >= = < >		0	45
Target_T_K (Kelvin (K))	!= =~ <= >= = < >		!= =~ <= >= = < >		273.15	318.15
Target_Sal (PSS-78)	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0	45.0
Temp_C (degrees Celsius (°C))	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0	45.0
Temp_K (Kelvin (K))	!= =~ <= >= = < >		!= =~ <= >= = < >		273.15	318.15
Sal (PSS-78)	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0	45.865
exp_pKB_combined (unitless)	!= =~ <= >= = < >		!= =~ <= >= = < >		8.3151	9.4763
borax_added_mg (milligrams (mg))	!= =~ <= >= = < >		!= =~ <= >= = < >		76.5	139.1
sw_origin (unitless)	!= =~ <= >= = < >		!= =~ <= >= = < >		"DI water"	"synthetic"
sw_collection_year (unitless)	!= =~ <= >= = < >		!= =~ <= >= = < >		"1934"	"2025"

 

Server-side Functions

distinct()

orderBy orderByDescending orderByClosest orderByCount orderByLimit orderByMax orderByMin orderByMinMax orderByMean orderBySum (" source Target_t_C Target_T_K Target_Sal Temp_C Temp_K Sal exp_pKB_combined borax_added_mg sw_origin sw_collection_year source Target_t_C Target_T_K Target_Sal Temp_C Temp_K Sal exp_pKB_combined borax_added_mg sw_origin sw_collection_year source Target_t_C Target_T_K Target_Sal Temp_C Temp_K Sal exp_pKB_combined borax_added_mg sw_origin sw_collection_year source Target_t_C Target_T_K Target_Sal Temp_C Temp_K Sal exp_pKB_combined borax_added_mg sw_origin sw_collection_year source Target_t_C Target_T_K Target_Sal Temp_C Temp_K Sal exp_pKB_combined borax_added_mg sw_origin sw_collection_year ")

File type: (more information) .asc - View OPeNDAP-style ISO-8859-1 comma-separated text. .csv - Download a ISO-8859-1 comma-separated text table (line 1: names; line 2: units; ISO 8601 times). .csvp - Download a ISO-8859-1 .csv file with line 1: name (units). Times are ISO 8601 strings. .csv0 - Download a ISO-8859-1 .csv file without column names or units. Times are ISO 8601 strings. .dataTable - A JSON file formatted for use with the Google Visualization client library (Google Charts). .das - View the dataset's metadata via an ISO-8859-1 OPeNDAP Dataset Attribute Structure (DAS). .dds - View the dataset's structure via an ISO-8859-1 OPeNDAP Dataset Descriptor Structure (DDS). .dods - OPeNDAP clients use this to download the data in the DODS binary format. .esriCsv - Download a ISO_8859_1 .csv file for ESRI's ArcGIS 9.x and below (separate date and time columns). .fgdc - View the dataset's UTF-8 FGDC .xml metadata. .geoJson - Download longitude,latitude,otherColumns data as a UTF-8 GeoJSON .json file. .graph - View a Make A Graph web page. .help - View a web page with a description of tabledap. .html - View an OPeNDAP-style HTML Data Access Form. .htmlTable - View a UTF-8 .html web page with the data in a table. Times are ISO 8601 strings. .iso19115 - View the dataset's ISO 19115-2/19139 UTF-8 .xml metadata. .itx - Download an ISO-8859-1 Igor Text File. Each response column becomes a wave. .json - View a table-like UTF-8 JSON file (missing value = 'null'; times are ISO 8601 strings). .jsonlCSV1 - View a UTF-8 JSON Lines CSV file with column names on line 1 (mv = 'null'; times are ISO 8601 strings). .jsonlCSV - View a UTF-8 JSON Lines CSV file without column names (mv = 'null'; times are ISO 8601 strings). .jsonlKVP - View a UTF-8 JSON Lines file with Key:Value pairs (missing value = 'null'; times are ISO 8601 strings). .mat - Download a MATLAB binary file. .nc - Download a flat, table-like, NetCDF-3 binary file with COARDS/CF/ACDD metadata. .ncHeader - View the UTF-8 header (the metadata) for the NetCDF-3 .nc file. .ncCF - Download a NetCDF-3 CF Discrete Sampling Geometries file (Contiguous Ragged Array). .ncCFHeader - View the UTF-8 header (the metadata) for the .ncCF file. .ncCFMA - Download a NetCDF-3 CF Discrete Sampling Geometries file (Multidimensional Array). .ncCFMAHeader - View the UTF-8 header (the metadata) for the .ncCFMA file. .nccsv - Download a NetCDF-3-like 7-bit ASCII NCCSV .csv file with COARDS/CF/ACDD metadata. .nccsvMetadata - View the dataset's metadata as the top half of a 7-bit ASCII NCCSV .csv file. .ncoJson - Download a UTF-8 NCO lvl=2 JSON file with COARDS/CF/ACDD metadata. .odvTxt - Download longitude,latitude,time,otherColumns as an ISO-8859-1 ODV Generic Spreadsheet File (.txt). .subset - View an HTML form which uses faceted search to simplify picking subsets of the data. .tsv - Download a ISO-8859-1 tab-separated text table (line 1: names; line 2: units; ISO 8601 times). .tsvp - Download a ISO-8859-1 .tsv file with line 1: name (units). Times are ISO 8601 strings. .tsv0 - Download a ISO-8859-1 .tsv file without column names or units. Times are ISO 8601 strings. .wav - Download a .wav audio file. All columns must be numeric and of the same type. .xhtml - View a UTF-8 XHTML (XML) file with the data in a table. Times are ISO 8601 strings. .kml - View a .kml file, suitable for Google Earth. .smallPdf - View a small .pdf image file with a graph or map. .pdf - View a standard, medium-sized .pdf image file with a graph or map. .largePdf - View a large .pdf image file with a graph or map. .smallPng - View a small .png image file with a graph or map. .png - View a standard, medium-sized .png image file with a graph or map. .largePng - View a large .png image file with a graph or map. .transparentPng - View a .png image file (just the data, without axes, landmask, or legend).

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  source {
    String long_name "Source";
    String units "unitless";
  }
  Target_t_C {
    Int32 actual_range 0, 45;
    String long_name "Target_t_c";
    String units "degrees Celsius (°C)";
  }
  Target_T_K {
    Float32 actual_range 273.15, 318.15;
    String long_name "Target_t_k";
    String units "Kelvin (K)";
  }
  Target_Sal {
    Float32 actual_range 0.0, 45.0;
    String long_name "Target_sal";
    String units "PSS-78";
  }
  Temp_C {
    Float32 actual_range 0.0, 45.0;
    String long_name "Temp_c";
    String units "degrees Celsius (°C)";
  }
  Temp_K {
    Float32 actual_range 273.15, 318.15;
    String long_name "Temp_k";
    String units "Kelvin (K)";
  }
  Sal {
    Float32 actual_range 0.0, 45.865;
    String long_name "Sal";
    String units "PSS-78";
  }
  exp_pKB_combined {
    Float32 actual_range 8.3151, 9.4763;
    String long_name "Exp_pkb_combined";
    String units "unitless";
  }
  borax_added_mg {
    Float32 actual_range 76.5, 139.1;
    String long_name "Borax_added_mg";
    String units "milligrams (mg)";
  }
  sw_origin {
    String long_name "Sw_origin";
    String units "unitless";
  }
  sw_collection_year {
    String long_name "Sw_collection_year";
    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.1000973.1";
    String history 
"2026-06-26T23:42:50Z (local files)
2026-06-26T23:42:50Z https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_1000973_v1.html";
    String infoUrl "https://osprey.bco-dmo.org/dataset/1000973";
    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 "The dissociation constant of boric acid (KB) plays a critical role in marine carbonate system calculations, yet available parameterizations remain limited in salinity coverage and have not been revisited using modern methodology. This dataset combines Dickson (1990)'s data (i.e., D90) in synthetic seawater with our own work (i.e., MMB26) to produce an improved parameterization of pKB for carbonate system calculations across a full range of estuarine and open-ocean environments. MMB26 is a novel dataset of pKB obtained in natural seawater, derived from spectrophotometrically calibrated electrode measurements spanning salinities from 0 to 45.9 and temperatures between 275.15 and 308.15 K. This experimental data is particularly important given that nearly half the total variation in pKB across the full salinity range occurs within the narrow freshwater-to-brackish transition. The spectrophotometrically calibrated electrode data (MMB26) are in excellent agreement with previous work obtained in synthetic seawater at salinities greater than 5 (D90).";
    String title "[Boric acid dissociation constants in freshwater and marine conditions] - Boric acid dissociation constants (pKB) from spectrophotometrically calibrated electrode measurements made in natural seawater across estuarine to open-ocean conditions (Spectrophotometric Determinations of Carbonic Acid Dissociation Constants for Estuarine Conditions)";
  }
}

 

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