ERDDAP > info > bcodmo_dataset_770447

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
	set	data	graph		files	public	[Barium-isotopic profile IrnBru] - Barium concentration and isotopic data collected along the California Coastline during July 2014 from R/V Melville cruise MV1405 (U.S. GEOTRACES Pacific Meridional Transect: Tracing Basin-scale Nutrient Cycling and Carbon Export with Dissolved and Particulate Barium-isotopic Distributions)		F   I   M	background			BCO-DMO	bcodmo_dataset_770447

The Dataset's Variables and Attributes

Row Type	Variable Name	Attribute Name	Data Type	Value
attribute	NC_GLOBAL	access_formats	String	.htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson
attribute	NC_GLOBAL	acquisition_description	String	Samples were collected using GO-FLO Teflon Trace Metal Bottles, filtered to 0.2 \u03bcm or 0.45 \u03bcm (depending on filter type), acidified to pH \u2248 2 with hydrochloric acid, and stored for several years prior to processing. Aliquots containing five milliliters of seawater were cleanly subsampled from each sample, weighed, and an appropriate quantity of 136Ba\u2013135Ba double spike added. Following spike\u2013sample equilibration, barium was co- precipitated with calcium carbonate via dropwise addition of sodium carbonate. The resultant precipitate was dissolved in hydrochloric acid and twice passed through cation-exchange columns to purify Ba from matrix elements. Samples were aspirated, desolvated, and analyzed using a 100 \u03bcL/min nebulizer, Aridus II desolvation system, and ThermoFisher Neptune multi- collector ICP-MS, respectively. All instrumentation was sitated at the WHOI Plasma Facility. Barium-isotopic compositions were calculated from simultaneous monitoring of ion beams corresponding to m/z 131 (Xe, xenon), 135 (Ba), 136 (Xe; Ba; Ce, cerium), 137 (Ba), 138 (Ba; La, lanthanum; Ce), 139 (La) and 140 (Ce). Problem Report: Sample from 1,000 m (Event #42; St. 12b) has an asymmetric uncertainty due to possible evaporative losses;\u00a0positive uncertainty is +1.4 nmol/kg, whereas negative uncertainty is \u22126.3 nmol/kg (both are one standard deviation).
attribute	NC_GLOBAL	awards_0_award_nid	String	770289
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-1736949
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1736949
attribute	NC_GLOBAL	awards_0_funder_name	String	NSF Division of Ocean Sciences
attribute	NC_GLOBAL	awards_0_funding_acronym	String	NSF OCE
attribute	NC_GLOBAL	awards_0_funding_source_nid	String	355
attribute	NC_GLOBAL	awards_0_program_manager	String	Henrietta N Edmonds
attribute	NC_GLOBAL	awards_0_program_manager_nid	String	51517
attribute	NC_GLOBAL	cdm_data_type	String	Other
attribute	NC_GLOBAL	comment	String	Barium concentration and isotopic data collected along the California Coastline in 2014 (MV1405) PI: Tristan Horner (WHOI) Version date: 10 June 2019 Quality flags follow ODV scheme: 1=Good value; 2=Probably good value; 3=Probably bad value; 6=Value below detection limit
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_type	String	institution
attribute	NC_GLOBAL	creator_url	String	https://www.bco-dmo.org/
attribute	NC_GLOBAL	data_source	String	extract_data_as_tsv version 2.3 19 Dec 2019
attribute	NC_GLOBAL	date_created	String	2019-06-10T20:16:48Z
attribute	NC_GLOBAL	date_modified	String	2019-08-06T17:59:42Z
attribute	NC_GLOBAL	defaultDataQuery	String	&time<now
attribute	NC_GLOBAL	doi	String	10.1575/1912/bco-dmo.770447.1
attribute	NC_GLOBAL	Easternmost_Easting	double	-125.746
attribute	NC_GLOBAL	geospatial_lat_max	double	39.001
attribute	NC_GLOBAL	geospatial_lat_min	double	38.99
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	-125.746
attribute	NC_GLOBAL	geospatial_lon_min	double	-125.75
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	geospatial_vertical_max	double	1500.0
attribute	NC_GLOBAL	geospatial_vertical_min	double	15.0
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/770447
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	instruments_0_acronym	String	ICP Mass Spec
attribute	NC_GLOBAL	instruments_0_dataset_instrument_nid	String	770531
attribute	NC_GLOBAL	instruments_0_description	String	An ICP Mass Spec is an instrument that passes nebulized samples into an inductively-coupled gas plasma (8-10000 K) where they are atomized and ionized. Ions of specific mass-to-charge ratios are quantified in a quadrupole mass spectrometer.
attribute	NC_GLOBAL	instruments_0_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/LAB15/
attribute	NC_GLOBAL	instruments_0_instrument_name	String	Inductively Coupled Plasma Mass Spectrometer
attribute	NC_GLOBAL	instruments_0_instrument_nid	String	530
attribute	NC_GLOBAL	instruments_0_supplied_name	String	ThermoFisher Neptune multi-collector ICP-MS
attribute	NC_GLOBAL	instruments_1_acronym	String	GO-FLO Teflon TM
attribute	NC_GLOBAL	instruments_1_dataset_instrument_nid	String	770532
attribute	NC_GLOBAL	instruments_1_description	String	GO-FLO Teflon-lined Trace Metal free sampling bottles are used for collecting water samples for trace metal, nutrient and pigment analysis. The GO-FLO sampling bottle is designed specifically to avoid sample contamination at the surface, internal spring contamination, loss of sample on deck (internal seals), and exchange of water from different depths.
attribute	NC_GLOBAL	instruments_1_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/30/
attribute	NC_GLOBAL	instruments_1_instrument_name	String	GO-FLO Teflon Trace Metal Bottle
attribute	NC_GLOBAL	instruments_1_instrument_nid	String	533
attribute	NC_GLOBAL	instruments_1_supplied_name	String	GO-FLO Teflon Trace Metal Bottle
attribute	NC_GLOBAL	keywords	String	Ba_138_134_D_DELTA_BOTTLE, Ba_138_134_D_DELTA_BOTTLE_FLAG, Ba_138_134_D_DELTA_BOTTLE_stdev, Ba_D_CONC_BOTTLE, Ba_D_CONC_BOTTLE_FLAG, Ba_D_CONC_BOTTLE_stdev, bco, bco-dmo, biological, bottle, bottle_rosette, chemical, conc, data, dataset, delta, depth, deviation, dmo, erddap, event, flag, latitude, longitude, management, notes, oceanography, office, preliminary, rosette, standard, standard deviation, station, stdev
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/770447/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/770447
attribute	NC_GLOBAL	Northernmost_Northing	double	39.001
attribute	NC_GLOBAL	param_mapping	String	{'770447': {'lat': 'flag - latitude', 'Depth': 'flag - depth', 'long': 'flag - longitude'}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/770447/parameters
attribute	NC_GLOBAL	people_0_affiliation	String	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_0_affiliation_acronym	String	WHOI
attribute	NC_GLOBAL	people_0_person_name	String	Tristan J. Horner
attribute	NC_GLOBAL	people_0_person_nid	String	680928
attribute	NC_GLOBAL	people_0_role	String	Principal Investigator
attribute	NC_GLOBAL	people_0_role_type	String	originator
attribute	NC_GLOBAL	people_1_affiliation	String	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_1_affiliation_acronym	String	WHOI BCO-DMO
attribute	NC_GLOBAL	people_1_person_name	String	Shannon Rauch
attribute	NC_GLOBAL	people_1_person_nid	String	51498
attribute	NC_GLOBAL	people_1_role	String	BCO-DMO Data Manager
attribute	NC_GLOBAL	people_1_role_type	String	related
attribute	NC_GLOBAL	project	String	GEOTRACES PMT Barium
attribute	NC_GLOBAL	projects_0_acronym	String	GEOTRACES PMT Barium
attribute	NC_GLOBAL	projects_0_description	String	NSF Award Abstract: The goal of the international GEOTRACES program is to understand the distributions of trace chemical elements and their isotopes in the oceans. This project would measure stable isotopes of barium on a 2018 U.S. GEOTRACES expedition in the Pacific Ocean. Barium is a trace element whose distribution is relevant to all three themes of the GEOTRACES program, as barium can be used to: study chemical cycling within the oceans; trace exchanges of elements at ocean boundaries; and infer past environmental conditions. The data collected here will be the first of their kind for barium isotopes and will illuminate the geochemical cycle of this element. Moreover, conducting this work as part of the GEOTRACES program will maximize the return on investment in the barium isotope data by providing a rich interpretative framework. This project seeks to understand how the interplay between internal cycling and boundary processes sets basin-scale barium concentration and isotopic distributions in the Pacific Ocean. Despite possessing a nutrient-like dissolved profile, marine barium cycling has a fundamentally different boundary condition to the major algal nutrients: barium cycling is not driven by production of organic matter but rather by its remineralization. Respiration of sinking organic matter in the ocean's 'twilight zone' releases carbon dioxide, mineralizes nutrients, and promotes precipitation of micron-size crystals of barite. Since barite is the major vector of particulate barium in seawater, the abundance and isotopic composition of barium in the oceans is tied to global carbon and nutrient cycling at the 'dark end' of the biological carbon pump. The data collected here will be used to test hypotheses across an unprecedented range of oceanographic conditions regarding: the formation, export, and regeneration of particulate material and the connection to seafloor processes; the importance of boundary sources to regional and global trace element and isotope budgets; the formation of putative soft-metal sulfides in oxygen-minimum zones; and the origin of enigmatic suspended particles in the deep open ocean. This proposal will contribute to education by training undergraduate research fellows and through presentation of seminars and guest lectures to regional science educators through collaboration with a regional conservation organization.
attribute	NC_GLOBAL	projects_0_end_date	String	2020-12
attribute	NC_GLOBAL	projects_0_name	String	U.S. GEOTRACES Pacific Meridional Transect: Tracing Basin-scale Nutrient Cycling and Carbon Export with Dissolved and Particulate Barium-isotopic Distributions
attribute	NC_GLOBAL	projects_0_project_nid	String	770290
attribute	NC_GLOBAL	projects_0_start_date	String	2018-01
attribute	NC_GLOBAL	publisher_name	String	Biological and Chemical Oceanographic Data Management Office (BCO-DMO)
attribute	NC_GLOBAL	publisher_type	String	institution
attribute	NC_GLOBAL	sourceUrl	String	(local files)
attribute	NC_GLOBAL	Southernmost_Northing	double	38.99
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	subsetVariables	String	Ba_138_134_D_DELTA_BOTTLE_FLAG
attribute	NC_GLOBAL	summary	String	Barium concentration and isotopic data collected along the California Coastline during July 2014 from R/V Melville cruise MV1405.
attribute	NC_GLOBAL	title	String	[Barium-isotopic profile IrnBru] - Barium concentration and isotopic data collected along the California Coastline during July 2014 from R/V Melville cruise MV1405 (U.S. GEOTRACES Pacific Meridional Transect: Tracing Basin-scale Nutrient Cycling and Carbon Export with Dissolved and Particulate Barium-isotopic Distributions)
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	Westernmost_Easting	double	-125.75
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.3
variable	Event		byte
attribute	Event	_FillValue	byte	127
attribute	Event	actual_range	byte	31, 42
attribute	Event	bcodmo_name	String	event
attribute	Event	description	String	Event number
attribute	Event	long_name	String	Event
attribute	Event	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/EVTAGFL/
attribute	Event	units	String	unitless
variable	Station		String
attribute	Station	bcodmo_name	String	station
attribute	Station	description	String	Station number
attribute	Station	long_name	String	Station
attribute	Station	units	String	unitless
variable	latitude		double
attribute	latitude	_CoordinateAxisType	String	Lat
attribute	latitude	_FillValue	double	NaN
attribute	latitude	actual_range	double	38.99, 39.001
attribute	latitude	axis	String	Y
attribute	latitude	bcodmo_name	String	latitude
attribute	latitude	colorBarMaximum	double	90.0
attribute	latitude	colorBarMinimum	double	-90.0
attribute	latitude	description	String	Latitude (positive values = North)
attribute	latitude	ioos_category	String	Location
attribute	latitude	long_name	String	Latitude
attribute	latitude	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/LATX/
attribute	latitude	standard_name	String	latitude
attribute	latitude	units	String	degrees_north
variable	longitude		double
attribute	longitude	_CoordinateAxisType	String	Lon
attribute	longitude	_FillValue	double	NaN
attribute	longitude	actual_range	double	-125.75, -125.746
attribute	longitude	axis	String	X
attribute	longitude	bcodmo_name	String	longitude
attribute	longitude	colorBarMaximum	double	180.0
attribute	longitude	colorBarMinimum	double	-180.0
attribute	longitude	description	String	Longitude (negative values = West)
attribute	longitude	ioos_category	String	Location
attribute	longitude	long_name	String	Longitude
attribute	longitude	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/LONX/
attribute	longitude	source_name	String	long
attribute	longitude	standard_name	String	longitude
attribute	longitude	units	String	degrees_east
variable	depth		double
attribute	depth	_CoordinateAxisType	String	Height
attribute	depth	_CoordinateZisPositive	String	down
attribute	depth	_FillValue	double	NaN
attribute	depth	actual_range	double	15.0, 1500.0
attribute	depth	axis	String	Z
attribute	depth	bcodmo_name	String	depth
attribute	depth	colorBarMaximum	double	8000.0
attribute	depth	colorBarMinimum	double	-8000.0
attribute	depth	colorBarPalette	String	TopographyDepth
attribute	depth	description	String	Sample depth
attribute	depth	ioos_category	String	Location
attribute	depth	long_name	String	Depth
attribute	depth	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/DEPH/
attribute	depth	positive	String	down
attribute	depth	standard_name	String	depth
attribute	depth	units	String	m
variable	bottle_rosette		byte
attribute	bottle_rosette	_FillValue	byte	127
attribute	bottle_rosette	actual_range	byte	1, 17
attribute	bottle_rosette	bcodmo_name	String	bottle
attribute	bottle_rosette	description	String	Bottle number from rosette
attribute	bottle_rosette	long_name	String	Bottle Rosette
attribute	bottle_rosette	units	String	unitless
variable	Ba_D_CONC_BOTTLE		float
attribute	Ba_D_CONC_BOTTLE	_FillValue	float	NaN
attribute	Ba_D_CONC_BOTTLE	actual_range	float	39.89, 127.22
attribute	Ba_D_CONC_BOTTLE	bcodmo_name	String	Ba
attribute	Ba_D_CONC_BOTTLE	description	String	Dissolved Ba (barium) concentration
attribute	Ba_D_CONC_BOTTLE	long_name	String	Ba D CONC BOTTLE
attribute	Ba_D_CONC_BOTTLE	units	String	nanomoles per kilogram (nmol/kg)
variable	Ba_D_CONC_BOTTLE_stdev		float
attribute	Ba_D_CONC_BOTTLE_stdev	_FillValue	float	NaN
attribute	Ba_D_CONC_BOTTLE_stdev	actual_range	float	0.5, 1.59
attribute	Ba_D_CONC_BOTTLE_stdev	bcodmo_name	String	Ba
attribute	Ba_D_CONC_BOTTLE_stdev	description	String	One-sigma uncertainty about the barium concentration
attribute	Ba_D_CONC_BOTTLE_stdev	long_name	String	Ba D CONC BOTTLE Stdev
attribute	Ba_D_CONC_BOTTLE_stdev	units	String	nmol/kg
variable	Ba_D_CONC_BOTTLE_FLAG		byte
attribute	Ba_D_CONC_BOTTLE_FLAG	_FillValue	byte	127
attribute	Ba_D_CONC_BOTTLE_FLAG	actual_range	byte	2, 3
attribute	Ba_D_CONC_BOTTLE_FLAG	bcodmo_name	String	q_flag
attribute	Ba_D_CONC_BOTTLE_FLAG	colorBarMaximum	double	150.0
attribute	Ba_D_CONC_BOTTLE_FLAG	colorBarMinimum	double	0.0
attribute	Ba_D_CONC_BOTTLE_FLAG	description	String	ODV quality flag for Ba_D_CONC_BOTTLE
attribute	Ba_D_CONC_BOTTLE_FLAG	long_name	String	Ba D CONC BOTTLE FLAG
attribute	Ba_D_CONC_BOTTLE_FLAG	units	String	unitless
variable	Ba_138_134_D_DELTA_BOTTLE		float
attribute	Ba_138_134_D_DELTA_BOTTLE	_FillValue	float	NaN
attribute	Ba_138_134_D_DELTA_BOTTLE	actual_range	float	0.297, 0.571
attribute	Ba_138_134_D_DELTA_BOTTLE	bcodmo_name	String	Ba
attribute	Ba_138_134_D_DELTA_BOTTLE	description	String	Dissolved Ba-isotopic composition
attribute	Ba_138_134_D_DELTA_BOTTLE	long_name	String	Ba 138 134 D DELTA BOTTLE
attribute	Ba_138_134_D_DELTA_BOTTLE	units	String	per mil deviation rel. to NIST SRM 3104a
variable	Ba_138_134_D_DELTA_BOTTLE_stdev		float
attribute	Ba_138_134_D_DELTA_BOTTLE_stdev	_FillValue	float	NaN
attribute	Ba_138_134_D_DELTA_BOTTLE_stdev	actual_range	float	0.015, 0.035
attribute	Ba_138_134_D_DELTA_BOTTLE_stdev	bcodmo_name	String	Ba
attribute	Ba_138_134_D_DELTA_BOTTLE_stdev	description	String	One-sigma uncertainty about the dissolved Ba-isotopic composition
attribute	Ba_138_134_D_DELTA_BOTTLE_stdev	long_name	String	Ba 138 134 D DELTA BOTTLE Stdev
attribute	Ba_138_134_D_DELTA_BOTTLE_stdev	units	String	per mil
variable	Ba_138_134_D_DELTA_BOTTLE_FLAG		byte
attribute	Ba_138_134_D_DELTA_BOTTLE_FLAG	_FillValue	byte	127
attribute	Ba_138_134_D_DELTA_BOTTLE_FLAG	actual_range	byte	2, 2
attribute	Ba_138_134_D_DELTA_BOTTLE_FLAG	bcodmo_name	String	q_flag
attribute	Ba_138_134_D_DELTA_BOTTLE_FLAG	colorBarMaximum	double	150.0
attribute	Ba_138_134_D_DELTA_BOTTLE_FLAG	colorBarMinimum	double	0.0
attribute	Ba_138_134_D_DELTA_BOTTLE_FLAG	description	String	ODV quality flag for Ba_138_134_D_DELTA_BOTTLE
attribute	Ba_138_134_D_DELTA_BOTTLE_FLAG	long_name	String	Ba 138 134 D DELTA BOTTLE FLAG
attribute	Ba_138_134_D_DELTA_BOTTLE_FLAG	units	String	unitless
variable	Notes		String
attribute	Notes	bcodmo_name	String	comment
attribute	Notes	description	String	Any concerns or issues
attribute	Notes	long_name	String	Notes
attribute	Notes	units	String	unitless

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.