bcodmo_dataset_925569_v1

Name: [Cr concentration and isotope data using dissolved Cr and different Cr species from RR1805] - Chromium (Cr) concentration and isotope data determined using dissolved Cr and different Cr species from samples collected on R/V Roger Revelle cruise RR1805 in April-May 2018 (Cr Isotope Oceanography of the Eastern Tropical North Pacific Ocean)
Creator: BCO-DMO
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.

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	[Cr concentration and isotope data using dissolved Cr and different Cr species from RR1805] - Chromium (Cr) concentration and isotope data determined using dissolved Cr and different Cr species from samples collected on R/V Roger Revelle cruise RR1805 in April-May 2018 (Cr Isotope Oceanography of the Eastern Tropical North Pacific Ocean)		M	background			BCO-DMO	bcodmo_dataset_925569_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.925569.1
attribute	NC_GLOBAL	Easternmost_Easting	double	-106.0
attribute	NC_GLOBAL	geospatial_lon_max	double	-106.0
attribute	NC_GLOBAL	geospatial_lon_min	double	-107.0
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	geospatial_vertical_max	double	500.0
attribute	NC_GLOBAL	geospatial_vertical_min	double	10.0
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/925569
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	Changes in chromium (Cr) isotope ratios due to fractionation between trivalent (Cr(III)) and hexavalent (Cr(VI)) are being utilized by geologists to infer oxygen conditions in past environments. But there is little information available on Cr in the modern ocean to ground-truth these inferences. Transformations between the two chromium redox species are important processes in oceanic Cr cycling. Here we present profiles of hexavalent and trivalent Cr concentrations and stable isotope ratios from the Eastern Tropical North Pacific (ETNP) oxygen deficient zone (ODZ) which support theoretical and experimental studies that predict that lighter Cr is preferentially reduced in low oxygen environments, and that residual dissolved Cr becomes heavier due to removal of particle-reactive Cr(III) on sinking particles. The Cr(III) maximum dominantly occurs in the upper portion of the ODZ, implying that microbial activity (dependent on the sinking flux of organic matter) may be the dominant mechanism for this transformation, rather than a simple inorganic chemical conversion between the species depending on the redox potential.
attribute	NC_GLOBAL	title	String	[Cr concentration and isotope data using dissolved Cr and different Cr species from RR1805] - Chromium (Cr) concentration and isotope data determined using dissolved Cr and different Cr species from samples collected on R/V Roger Revelle cruise RR1805 in April-May 2018 (Cr Isotope Oceanography of the Eastern Tropical North Pacific Ocean)
attribute	NC_GLOBAL	Westernmost_Easting	double	-107.0
variable	Cruise		String
attribute	Cruise	long_name	String	Cruise
attribute	Cruise	units	String	unitless
variable	Station		String
attribute	Station	long_name	String	Station
attribute	Station	units	String	unitless
variable	Latitude		float
attribute	Latitude	actual_range	float	17.0, 20.2
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	-107.0, -106.0
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	depth		int
attribute	depth	_CoordinateAxisType	String	Height
attribute	depth	_CoordinateZisPositive	String	down
attribute	depth	actual_range	int	10, 500
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	Total_dissolved_Cr		float
attribute	Total_dissolved_Cr	actual_range	float	2.29, 3.21
attribute	Total_dissolved_Cr	long_name	String	Total_dissolved_cr
attribute	Total_dissolved_Cr	units	String	nanomoles per kilogram (nmol/kg)
variable	Total_dissolved_d53Cr		float
attribute	Total_dissolved_d53Cr	actual_range	float	1.04, 1.32
attribute	Total_dissolved_d53Cr	long_name	String	Total_dissolved_d53cr
attribute	Total_dissolved_d53Cr	units	String	permil (‰)
variable	CrIII		float
attribute	CrIII	actual_range	float	0.85, 2.16
attribute	CrIII	long_name	String	Criii
attribute	CrIII	units	String	nanomoles per kilogram (nmol/kg)
variable	d53CrIII		float
attribute	d53CrIII	actual_range	float	-0.14, 0.31
attribute	d53CrIII	long_name	String	D53criii
attribute	d53CrIII	units	String	permil (‰)
variable	CrIII_pcnt_of_total		float
attribute	CrIII_pcnt_of_total	actual_range	float	26.0, 79.0
attribute	CrIII_pcnt_of_total	long_name	String	Criii_pcnt_of_total
attribute	CrIII_pcnt_of_total	units	String	percent (%)
variable	Calculated_CrVI		float
attribute	Calculated_CrVI	actual_range	float	0.58, 2.36
attribute	Calculated_CrVI	long_name	String	Calculated_crvi
attribute	Calculated_CrVI	units	String	nanomoles per kilogram (nmol/kg)
variable	Calculated_d53CrVI		float
attribute	Calculated_d53CrVI	actual_range	float	1.5, 5.33
attribute	Calculated_d53CrVI	long_name	String	Calculated_d53crvi
attribute	Calculated_d53CrVI	units	String	permil (‰)
variable	Measured_CrVI		float
attribute	Measured_CrVI	actual_range	float	0.99, 1.52
attribute	Measured_CrVI	long_name	String	Measured_crvi
attribute	Measured_CrVI	units	String	nanomoles per kilogram (nmol/kg)
variable	Measured_d53Cr		float
attribute	Measured_d53Cr	actual_range	float	2.23, 2.98
attribute	Measured_d53Cr	long_name	String	Measured_d53cr
attribute	Measured_d53Cr	units	String	permil (‰)

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.