ERDDAP > info > bcodmo_dataset_927046_v1

Grid DAP Data	Sub- set	Table DAP Data	Make A Graph	W M S	Source Data Files	Acces- sible	Title	Sum- mary	FGDC, ISO, Metadata	Back- ground Info	RSS	E mail	Institution	Dataset ID
		data	graph		files	public	[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)		M	background			BCO-DMO	bcodmo_dataset_927046_v1

The Dataset's Variables and Attributes

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/
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
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 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.
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)

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.