BCO-DMO ERDDAP
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Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL Conventions String COARDS, CF-1.6, ACDD-1.3
attribute NC_GLOBAL creator_email String info at bco-dmo.org
attribute NC_GLOBAL creator_name String BCO-DMO
attribute NC_GLOBAL creator_url String https://www.bco-dmo.org/ (external link)
attribute NC_GLOBAL doi String 10.26008/1912/bco-dmo.927046.1
attribute NC_GLOBAL Easternmost_Easting double 7.7
attribute NC_GLOBAL geospatial_lon_max double 7.7
attribute NC_GLOBAL geospatial_lon_min double -158.0
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL geospatial_vertical_max double 4800.0
attribute NC_GLOBAL geospatial_vertical_min double 2.0
attribute NC_GLOBAL geospatial_vertical_positive String down
attribute NC_GLOBAL geospatial_vertical_units String m
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/927046 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL license String The data may be used and redistributed for free but is not intended\nfor legal use, since it may contain inaccuracies. Neither the data\nContributor, ERD, NOAA, nor the United States Government, nor any\nof their employees or contractors, makes any warranty, express or\nimplied, including warranties of merchantability and fitness for a\nparticular purpose, or assumes any legal liability for the accuracy,\ncompleteness, or usefulness, of this information.
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL summary String The following dataset of SPE (solid phase extracted) DOM (dissolved organic matter) accompanies Phillips et al. 2022 (doi: 10.1073/pnas.2209152119). Our project sought to address the question of where long-lived organic molecules that are dissolved in the oceans come from, in particular molecules containing sulfur (S). Our approach was to measure the relative abundance of two stable sulfur isotopes (S-32 and S-34) in these molecules, which is technically very difficult due to the presence of million-fold higher sulfate ions in seawater. We developed a new preparatory chemistry to adequately isolate these organic molecules, and a new elemental analyzer/mass spectrometry method to measure their isotope abundances with high precision at trace levels. We conducted these S isotope measurements on 100 samples of dissolved organic matter (DOM) that had been previously collected by our collaborators from around the world (Northeast Pacific oxygen minimum zone, Northeast Pacific Shelf, North Pacific Gyre, San Pedro Basin, Caeté Estuary, South Pacific Gyre, and the North Sea). We also collected 2 dozen new samples from oceanographic stations in the North Pacific Gyre (Hawaii Ocean Timeseries) and North Atlantic Gyre (Bermuda Atlantic Time Series). The dataset includes 1) sample information such as sample ID, sample location, station name, collection depth (ranging from 0 to 4800 meters), latitude and longitude, month and year sampled (ranging from 2010 to 2021); 2) elemental analysis such as sulfur isotope values (δ34S), carbon (C) isotope values (δ13C), and C:S molar ratios; 3) physical parameters from collaborators' CTD analysis, such as oxygen, salinity, fluorescence, and temperature; and 4) chemical data from collaborators such as dissolved nitrate, phosphate, silicate, and calculated DOC (dissolved organic carbon) and DOS (dissolved organic sulfur) concentrations. Our data show that DOM molecules have (34S/32S) isotope ratios that are entirely consistent with being formed from ocean sulfate, and inconsistent with being formed by reactions of hydrogen sulfide in anoxic porewaters. This result negates one of the leading hypotheses for how long-lived DOM forms, i.e. by reactions in anoxic sediments. Instead, this sharpens our focus on understanding how relatively short-lived biomolecules in the surface ocean are transformed into long-lived DOM molecules.
attribute NC_GLOBAL title String [Dissolved Organic Matter Sulfur and Carbon Analysis] - Dissolved organic matter sulfur and carbon analysis of samples collected between 2010 and 2021 from various locations globally (Resolving sources of marine DOM via novel sulfur isotope analyses)
attribute NC_GLOBAL Westernmost_Easting double -158.0
variable Sample_ID int
attribute Sample_ID actual_range int 1, 100
attribute Sample_ID long_name String Sample_id
attribute Sample_ID units String unitless
variable Sample_Location String
attribute Sample_Location long_name String Sample_location
attribute Sample_Location units String unitless
variable Station String
attribute Station long_name String Station
attribute Station units String unitless
variable depth int
attribute depth _CoordinateAxisType String Height
attribute depth _CoordinateZisPositive String down
attribute depth actual_range int 2, 4800
attribute depth axis String Z
attribute depth ioos_category String Location
attribute depth long_name String Depth
attribute depth positive String down
attribute depth standard_name String depth
attribute depth units String m
variable Latitude float
attribute Latitude actual_range float -13.0, 53.74
attribute Latitude long_name String Latitude
attribute Latitude units String degrees_north
variable longitude float
attribute longitude _CoordinateAxisType String Lon
attribute longitude actual_range float -158.0, 7.7
attribute longitude axis String X
attribute longitude ioos_category String Location
attribute longitude long_name String Longitude
attribute longitude standard_name String longitude
attribute longitude units String degrees_east
variable Year String
attribute Year long_name String Year
attribute Year units String unitless
variable Month String
attribute Month long_name String Month
attribute Month units String unitless
variable d34S float
attribute d34S actual_range float -2.72, 19.95
attribute d34S long_name String D34s
attribute d34S units String per mil (‰)
variable n_d34S int
attribute n_d34S actual_range int 1, 5
attribute n_d34S long_name String N_d34s
attribute n_d34S units String unitless
variable std_error_d34S float
attribute std_error_d34S actual_range float 0.13, 0.29
attribute std_error_d34S long_name String Std_error_d34s
attribute std_error_d34S units String per mil (‰)
variable d13C float
attribute d13C actual_range float -28.6, -21.53
attribute d13C long_name String D13c
attribute d13C units String per mil (‰)
variable n_d13C int
attribute n_d13C actual_range int 1, 6
attribute n_d13C long_name String N_d13c
attribute n_d13C units String unitless
variable std_error_d13C float
attribute std_error_d13C actual_range float 0.04, 0.09
attribute std_error_d13C long_name String Std_error_d13c
attribute std_error_d13C units String per mil (‰)
variable C_to_S_ratio int
attribute C_to_S_ratio actual_range int 18, 303
attribute C_to_S_ratio long_name String C_to_s_ratio
attribute C_to_S_ratio units String unitless
variable n_C_to_S_ratio int
attribute n_C_to_S_ratio actual_range int 1, 5
attribute n_C_to_S_ratio long_name String N_c_to_s_ratio
attribute n_C_to_S_ratio units String unitless
variable std_error_C_to_S_ratio int
attribute std_error_C_to_S_ratio actual_range int 2, 6
attribute std_error_C_to_S_ratio long_name String Std_error_c_to_s_ratio
attribute std_error_C_to_S_ratio units String unitless
variable Oxygen float
attribute Oxygen actual_range float 0.9, 265.4
attribute Oxygen long_name String Oxygen
attribute Oxygen units String micromolar (uM)
variable Salinity float
attribute Salinity actual_range float 4.8, 36.8
attribute Salinity long_name String Salinity
attribute Salinity units String psu
variable Flourescence float
attribute Flourescence actual_range float 0.0, 1.8
attribute Flourescence long_name String Flourescence
attribute Flourescence units String relative fluorescence units
variable Temperature float
attribute Temperature actual_range float 1.5, 36.4
attribute Temperature long_name String Temperature
attribute Temperature units String degrees Celsius
variable Nitrate float
attribute Nitrate actual_range float 0.0, 47.3
attribute Nitrate long_name String Nitrate
attribute Nitrate units String micromolar (uM)
variable Phosphate float
attribute Phosphate actual_range float 0.0, 3.2
attribute Phosphate long_name String Phosphate
attribute Phosphate units String micromolar (uM)
variable Silicate float
attribute Silicate actual_range float 0.8, 168.0
attribute Silicate long_name String Silicate
attribute Silicate units String micromolar (uM)
variable DOC float
attribute DOC actual_range float 36.8, 84.5
attribute DOC long_name String Doc
attribute DOC units String micromolar (uM)
variable DOS int
attribute DOS actual_range int 133, 443
attribute DOS long_name String Dos
attribute DOS units String nanomolar (nM)

 
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