ERDDAP > info > bcodmo_dataset_767285

Grid DAP Data	Sub- set	Table DAP Data	Make A Graph	W M S	Source Data Files	Acces- sible	Title	Sum- mary	ISO, Metadata	Back- ground Info	RSS	E mail	Institution	Dataset ID
		data	graph		files	public	Concentrations of dissolved organic carbon and phenols from Polarstern cruise PS 94-ARK-XXIX/ 3 from August to October 2015		I   M	background			BCO-DMO	bcodmo_dataset_767285

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,.odvTxt
attribute	NC_GLOBAL	acquisition_description	String	Samples were filtered straight from Niskin bottles following established protocols for trace-metal clean sampling (Sample handling protocols for GEOTRACES cruises). Samples for DOC concentration were acidified to pH 2.5 and analyzed by high- temperature combustion on a Shimadzu TOC-L. DOC was calculated as the mean of between three and five injections using a six-point standard curve. Lignin-derived phenols were determined following Yan and Kaiser (2018; Anal. Chem), and Yan and Kaiser (2018; Analytica Chimica Acta). Briefly, C18 extracts were redissolved in 200 \u03bcL of 1.1 mol L\u22121 argon- sparged (10 min) NaOH in a 400 uL Teflon vial (Savillex Corp) and amended with containing 500 mg CuO, and amended with 10\u03bcL of10 mmolL\u22121 CuSO4 and 10\u03bc L of 0.2 molL\u22121 ascorbic acid. Oxidation was at 150 C for 120 minutes. Following oxidation, the samples were spiked with with a surrogate standard mixture of p- hydroxybenzoic acid-13C7, vanillin-13C6, and syringaldehyde-13C6 and acidified to pH \u2248 2.5 with 6 mol L\u22121 sulfuric acid in the reaction vials.\u00a0 Clean-up of samples was performed with Waters HLB cartrides and final sample eluates were dried under ultra-high purity argon. Phenols were quantified by liquid chromatography/electrospray ionization-tandem mass spectrometry using a five-point calibration curve bracketing the concentration range. Quantified phenols (TDLP included vanillin, acetovanillone, vanillic acid, syringaldehyde, acetosyringone, syringic acid, coumaric acid, ferulic acid, p-hydroxy-benzaldehyde, p-hydroxy- acetophenone, and p-hydroxy-benzoic acid. Samples were filtered straight from Niskin bottles following established protocols for trace-metal clean sampling (Sample handling protocols for GEOTRACES cruises) Samples for DOC concentration were acidified to pH 2.5 and analyzed by high- temperature combustion on a Shimadzu TOC-L. DOC was calculated as the mean of between three and five injections using a six-point standard curve. Lignin-derived phenols were determined following Yan and Kaiser (2018; Anal. Chem), and Yan and Kaiser (2018; Analytica Chimica Acta). Briefly, C18 extracts were redissolved in 200 \u03bcL of 1.1 mol L\u22121 argon- sparged (10 min) NaOH in a 400 uL Teflon vial (Savillex Corp) and amended with containing 500 mg CuO, and amended with 10\u03bcL of10 mmolL\u22121 CuSO4 and 10\u03bc L of 0.2 molL\u22121 ascorbic acid. Oxidation was at 150 C for 120 minutes. Following oxidation, the samples were spiked with with a surrogate standard mixture of p- hydroxybenzoic acid-13C7, vanillin-13C6, and syringaldehyde-13C6 and acidified to pH \u2248 2.5 with 6 mol L\u22121 sulfuric acid in the reaction vials.\u00a0 Clean-up of samples was performed with Waters HLB cartrides and final sample eluates were dried under ultra-high purity argon. Phenols were quantified by liquid chromatography/electrospray ionization-tandem mass spectrometry using a five-point calibration curve bracketing the concentration range. Quantified phenols: TDLP included vanillin, acetovanillone, vanillic acid, syringaldehyde, acetosyringone, syringic acid, coumaric acid, ferulic acid, p-hydroxy-benzaldehyde, p-hydroxy- acetophenone, and p-hydroxy-benzoic acid.
attribute	NC_GLOBAL	awards_0_award_nid	String	763578
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-1536506
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1536506
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	Dissolved phenols for Polarstern cruise PS94 ARK-XXIX/3 PI: Karl Kaiser (TAMU) Version date: 10-May-2019
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	2019-05-10T17:14:03Z
attribute	NC_GLOBAL	date_modified	String	2019-06-04T19:19:57Z
attribute	NC_GLOBAL	defaultDataQuery	String	&time<now
attribute	NC_GLOBAL	doi	String	10.1575/1912/bco-dmo.767285.1
attribute	NC_GLOBAL	Easternmost_Easting	double	179.8463
attribute	NC_GLOBAL	geospatial_lat_max	double	89.1667
attribute	NC_GLOBAL	geospatial_lat_min	double	73.2525
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	179.8463
attribute	NC_GLOBAL	geospatial_lon_min	double	-179.9473
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	geospatial_vertical_max	double	4000.9
attribute	NC_GLOBAL	geospatial_vertical_min	double	7.3
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/767285
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	instruments_0_acronym	String	Niskin bottle
attribute	NC_GLOBAL	instruments_0_dataset_instrument_nid	String	767339
attribute	NC_GLOBAL	instruments_0_description	String	A Niskin bottle (a next generation water sampler based on the Nansen bottle) is a cylindrical, non-metallic water collection device with stoppers at both ends. The bottles can be attached individually on a hydrowire or deployed in 12, 24 or 36 bottle Rosette systems mounted on a frame and combined with a CTD. Niskin bottles are used to collect discrete water samples for a range of measurements including pigments, nutrients, plankton, etc.
attribute	NC_GLOBAL	instruments_0_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L22/current/TOOL0412/
attribute	NC_GLOBAL	instruments_0_instrument_name	String	Niskin bottle
attribute	NC_GLOBAL	instruments_0_instrument_nid	String	413
attribute	NC_GLOBAL	instruments_0_supplied_name	String	Niskin bottles
attribute	NC_GLOBAL	instruments_1_acronym	String	Mass Spec
attribute	NC_GLOBAL	instruments_1_dataset_instrument_nid	String	767346
attribute	NC_GLOBAL	instruments_1_description	String	General term for instruments used to measure the mass-to-charge ratio of ions; generally used to find the composition of a sample by generating a mass spectrum representing the masses of sample components.
attribute	NC_GLOBAL	instruments_1_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/LAB16/
attribute	NC_GLOBAL	instruments_1_instrument_name	String	Mass Spectrometer
attribute	NC_GLOBAL	instruments_1_instrument_nid	String	685
attribute	NC_GLOBAL	instruments_1_supplied_name	String	liquid chromatography/electrospray ionization-tandem mass spectrometry
attribute	NC_GLOBAL	instruments_2_acronym	String	Shimadzu TOC-L
attribute	NC_GLOBAL	instruments_2_dataset_instrument_nid	String	767340
attribute	NC_GLOBAL	instruments_2_description	String	A Shimadzu TOC-L Analyzer measures DOC by high temperature combustion method. Developed by Shimadzu, the 680 degree C combustion catalytic oxidation method is now used worldwide. One of its most important features is the capacity to efficiently oxidize hard-to-decompose organic compounds, including insoluble and macromolecular organic compounds. The 680 degree C combustion catalytic oxidation method has been adopted for the TOC-L series. http://www.shimadzu.com/an/toc/lab/toc-l2.html
attribute	NC_GLOBAL	instruments_2_instrument_external_identifier	String	http://onto.nerc.ac.uk/CAST/124.html
attribute	NC_GLOBAL	instruments_2_instrument_name	String	Shimadzu TOC-L Analyzer
attribute	NC_GLOBAL	instruments_2_instrument_nid	String	527277
attribute	NC_GLOBAL	instruments_2_supplied_name	String	Shimadzu TOC-L
attribute	NC_GLOBAL	keywords	String	bco, bco-dmo, biological, bottle, cast, chemical, commerce, data, dataset, date, density, department, depth, Depth_water, dmo, doc, earth, Earth Science > Oceans > Salinity/Density > Salinity, erddap, latitude, longitude, management, ocean, oceanography, oceans, office, phenols, practical, preliminary, salinity, science, sea, sea_water_practical_salinity, seawater, station, Temp, temperature, time, water
attribute	NC_GLOBAL	keywords_vocabulary	String	GCMD Science Keywords
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/767285/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/767285
attribute	NC_GLOBAL	Northernmost_Northing	double	89.1667
attribute	NC_GLOBAL	param_mapping	String	{'767285': {'Depth_water': 'flag - depth', 'Latitude': 'flag - latitude', 'Date_Time_UTC': 'flag - time', 'Longitude': 'flag - longitude'}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/767285/parameters
attribute	NC_GLOBAL	people_0_affiliation	String	Texas A&M, Galveston
attribute	NC_GLOBAL	people_0_affiliation_acronym	String	TAMUG
attribute	NC_GLOBAL	people_0_person_name	String	Karl Kaiser
attribute	NC_GLOBAL	people_0_person_nid	String	732803
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	Lignin phenol method development
attribute	NC_GLOBAL	projects_0_acronym	String	Lignin phenol method development
attribute	NC_GLOBAL	projects_0_description	String	NSF Award Abstract: The distribution and fate of land-derived, or terrigenous, organic matter in the ocean has long been of interest to oceanographers, but that interest has grown considerably as research on the marine and global carbon cycle intensifies. Lignin is a major structural polymer found only in vascular plants, making lignin a unique tracer of terrigenous organic matter input to the marine environment. The current analytical tool for analyzing lignin, breaking it into a suite of identifiable phenolic compounds, is complex, time consuming and requires 10 to 30 liters of water. Given these limitations, applications of lignin phenols as tracers of terrestrial organic carbon in the ocean have been sparse. Through this project, the researchers aim to redesign existing chemical methodology together with modified instrumental detection for even 3 times greater sensitivity using a sample of less than 200 milliliters. Outfitting the scientific community with new methodology to sensitively trace this marker of terrigenous organic carbon will provide a clearer understanding of organic matter fluxes between and within terrestrial and oceanic reservoirs, and potentially establish lignin phenols as a robust oceanographic tracer. This project will support the development of the next generation of scientists, including an early career investigator, and graduate and undergraduate students. Lignin phenol measurements have been used to study general distribution patterns and mechanisms of decomposition of terrigenous dissolved organic carbon (tDOC) in the global ocean. The distribution pattern of tDOC among ocean basins is generally consistent with the global pattern of riverine discharge to the ocean basins. However, large scale generalizations required and more fully resolved distributions of lignin as a tracer of tDOC are hampered by the difficulties and limitations associated with the present lignin phenol method. The main objectives of this project are to (1) develop methodology for measuring dissolved lignin in ultra-low volumes at high sensitivity in open ocean seawater and (2) apply the new method to study terrigenous tDOC processing and transport in the Eurasian Basin of the Arctic Ocean, where large Siberian rivers deliver the bulk of tDOC to the shelf areas. Results from this research will help evaluate lignin phenols as robust oceanographic tracers, useful to study physical mixing in the Arctic Ocean and potentially improve our understanding of the fate and removal of terrigenous organic carbon in the oceans. Addressing the second objective would provide well-constrained decay constants for lignin and tDOC in the Arctic Ocean and provide novel information on halocline formation. Integration of tDOC budgets, freshwater budgets, and circulation and atmospheric patterns will ultimately improve understanding of biogeochemical cycles in the Arctic Ocean and its role in global climate.
attribute	NC_GLOBAL	projects_0_end_date	String	2018-12
attribute	NC_GLOBAL	projects_0_geolocation	String	Arctic Ocean
attribute	NC_GLOBAL	projects_0_name	String	Development and application of a high sensitivity, ultra low volume method to measure biomarkers of terrigenous organic matter in the open ocean
attribute	NC_GLOBAL	projects_0_project_nid	String	763579
attribute	NC_GLOBAL	projects_0_start_date	String	2016-01
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	73.2525
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	summary	String	Concentrations of dissolved organic carbon and phenols from Polarstern cruise PS 94-ARK-XXIX/3 from August to October 2015.
attribute	NC_GLOBAL	time_coverage_end	String	2015-10-07T20:43Z
attribute	NC_GLOBAL	time_coverage_start	String	2015-08-20T00:45Z
attribute	NC_GLOBAL	title	String	Concentrations of dissolved organic carbon and phenols from Polarstern cruise PS 94-ARK-XXIX/3 from August to October 2015
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	Westernmost_Easting	double	-179.9473
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.3
variable	Station		short
attribute	Station	_FillValue	short	32767
attribute	Station	actual_range	short	4, 157
attribute	Station	bcodmo_name	String	station
attribute	Station	description	String	Station
attribute	Station	long_name	String	Station
attribute	Station	units	String	unitless
variable	Cast		byte
attribute	Cast	_FillValue	byte	127
attribute	Cast	actual_range	byte	1, 9
attribute	Cast	bcodmo_name	String	cast
attribute	Cast	description	String	Cast
attribute	Cast	long_name	String	Cast
attribute	Cast	units	String	unitless
variable	Bottle		byte
attribute	Bottle	_FillValue	byte	127
attribute	Bottle	actual_range	byte	1, 24
attribute	Bottle	bcodmo_name	String	bottle
attribute	Bottle	description	String	Bottle
attribute	Bottle	long_name	String	Bottle
attribute	Bottle	units	String	unitless
variable	time		double
attribute	time	_CoordinateAxisType	String	Time
attribute	time	actual_range	double	1.4400315E9, 1.44425058E9
attribute	time	axis	String	T
attribute	time	bcodmo_name	String	unknown
attribute	time	description	String	Date and time (UTC); format: yyyy-mm-ddTHH:MM
attribute	time	ioos_category	String	Time
attribute	time	long_name	String	Date Time UTC
attribute	time	source_name	String	Date_Time_UTC
attribute	time	standard_name	String	time
attribute	time	time_origin	String	01-JAN-1970 00:00:00
attribute	time	time_precision	String	1970-01-01T00:00Z
attribute	time	units	String	seconds since 1970-01-01T00:00:00Z
variable	latitude		double
attribute	latitude	_CoordinateAxisType	String	Lat
attribute	latitude	_FillValue	double	NaN
attribute	latitude	actual_range	double	73.2525, 89.1667
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 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	-179.9473, 179.8463
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 east (postive values = east)
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	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	7.3, 4000.9
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	Temp		float
attribute	Temp	_FillValue	float	NaN
attribute	Temp	actual_range	float	-1.7956, 7.2796
attribute	Temp	bcodmo_name	String	temperature
attribute	Temp	description	String	Temperature
attribute	Temp	long_name	String	Temperature
attribute	Temp	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/TEMPP901/
attribute	Temp	units	String	degrees Celsius
variable	Salinity		float
attribute	Salinity	_FillValue	float	NaN
attribute	Salinity	actual_range	float	27.2066, 35.158
attribute	Salinity	bcodmo_name	String	sal
attribute	Salinity	colorBarMaximum	double	37.0
attribute	Salinity	colorBarMinimum	double	32.0
attribute	Salinity	description	String	Salinity
attribute	Salinity	long_name	String	Sea Water Practical Salinity
attribute	Salinity	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/PSALST01/
attribute	Salinity	units	String	PSU
variable	DOC		float
attribute	DOC	_FillValue	float	NaN
attribute	DOC	actual_range	float	40.6, 146.4
attribute	DOC	bcodmo_name	String	DOC
attribute	DOC	description	String	DOC
attribute	DOC	long_name	String	DOC
attribute	DOC	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/CORGZZZX/
attribute	DOC	units	String	micromoles per liter (umol/L)
variable	Phenols		float
attribute	Phenols	_FillValue	float	NaN
attribute	Phenols	actual_range	float	0.0, 19823.5
attribute	Phenols	bcodmo_name	String	unknown
attribute	Phenols	description	String	Phenols
attribute	Phenols	long_name	String	Phenols
attribute	Phenols	units	String	picomoles per liter (pmol/L)

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.