ERDDAP > info > bcodmo_dataset_745932

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	[Gulf of Mexico bottom water analysis] - Chemical analysis from sediment core bottom water samples collected in the northern Gulf of Mexico, May 2017 (Toward an Improved Understanding of Blue Carbon: The Role of Seagrasses in Sequestering CO2)		F   I   M	background			BCO-DMO	bcodmo_dataset_745932

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	Sediment cores were collected by divers, sealed in the field with rubber stoppers and returned to the lab for processing. Pore waters were collected by inserting rhizon samplers (Seeberg-Elverfeldt et al., 2005) through pre- drilled holes in the core tubes. Samples were collected in gas-tight glass syringes and filtered through 0.45 \u00b5m nylon filters into storage vials. Alkalinity samples were titrated within 12hr of collection; other samples were returned to the lab for analysis, using techniques routinely used in my lab: alkalinity and initial pH - Hu and Burdige (2008); sulfate, DIC, ammonium and DOC - Burdige and Komada (2011), Komada et al. (2016); sulfide - Cline (1969), Abdulla et al. (in prep.). Alkalinity and initial pH were determined by Gran Titration using a Metrohm automatic titrator (model 785 DMP Titrino) combined with a Cole-Parmer pH electrode, calibrated using pH 4.00, 7.00 and 10.00 NIST-traceable buffers (Hu and Burdige, 2008). Sulfate was determined by ion chromatography and conductivity detection with a Thermo-Fisher Dionex ICS-5000 ion chromatograph. DOC was determined by high temperature combustion using a Shimadzu TOC-V total carbon analyzer (Burdige and Komada, 2011; Komada et al. 2016). DIC were determined by FIA analysis using a home-built system consisting of a Rainin Rabbit peristaltic pump and a Dionex CDM-II conductivity detector (Hall and Aller, 1992; Lustwerk and Burdige, 1995). Note:\u00a0\"ns\" stands for \"samples not collected for this analysis\".
attribute	NC_GLOBAL	awards_0_award_nid	String	648650
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-1635403
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	David L. Garrison
attribute	NC_GLOBAL	awards_0_program_manager_nid	String	50534
attribute	NC_GLOBAL	awards_1_award_nid	String	710233
attribute	NC_GLOBAL	awards_1_award_number	String	OCE-1633951
attribute	NC_GLOBAL	awards_1_data_url	String	http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1633951
attribute	NC_GLOBAL	awards_1_funder_name	String	NSF Division of Ocean Sciences
attribute	NC_GLOBAL	awards_1_funding_acronym	String	NSF OCE
attribute	NC_GLOBAL	awards_1_funding_source_nid	String	355
attribute	NC_GLOBAL	awards_1_program_manager	String	Michael E. Sieracki
attribute	NC_GLOBAL	awards_1_program_manager_nid	String	50446
attribute	NC_GLOBAL	cdm_data_type	String	Other
attribute	NC_GLOBAL	comment	String	Bottom water analysis collected May 2017 in the northern Gulf of Mexico PI: D. Burdige (ODU) Co-PIs: R. Zimmerman (ODU), M. Long (WHOI) version date: 2018-09-04 NOTES: nd indicates that only 1 of 3 bottles was analyzed so there is no standard deviation
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	2018-09-11T16:58:21Z
attribute	NC_GLOBAL	date_modified	String	2019-03-20T15:40:05Z
attribute	NC_GLOBAL	defaultDataQuery	String	&time<now
attribute	NC_GLOBAL	doi	String	10.1575/1912/bco-dmo.745932.1
attribute	NC_GLOBAL	Easternmost_Easting	double	-84.456
attribute	NC_GLOBAL	geospatial_lat_max	double	29.907
attribute	NC_GLOBAL	geospatial_lat_min	double	29.853
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	-84.456
attribute	NC_GLOBAL	geospatial_lon_min	double	-84.552
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/745932
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	instruments_0_acronym	String	TOC analyzer
attribute	NC_GLOBAL	instruments_0_dataset_instrument_description	String	Used to measure dissolved organic carbon.
attribute	NC_GLOBAL	instruments_0_dataset_instrument_nid	String	748152
attribute	NC_GLOBAL	instruments_0_description	String	A unit that accurately determines the carbon concentrations of organic compounds typically by detecting and measuring its combustion product (CO2). See description document at: http://bcodata.whoi.edu/LaurentianGreatLakes_Chemistry/bs116.pdf
attribute	NC_GLOBAL	instruments_0_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/LAB04/
attribute	NC_GLOBAL	instruments_0_instrument_name	String	Total Organic Carbon Analyzer
attribute	NC_GLOBAL	instruments_0_instrument_nid	String	652
attribute	NC_GLOBAL	instruments_0_supplied_name	String	Shimadzu TOC-V total carbon analyzer
attribute	NC_GLOBAL	instruments_1_acronym	String	Ion Chromatograph
attribute	NC_GLOBAL	instruments_1_dataset_instrument_description	String	Used to measure sulfate.
attribute	NC_GLOBAL	instruments_1_dataset_instrument_nid	String	748148
attribute	NC_GLOBAL	instruments_1_description	String	Ion chromatography is a form of liquid chromatography that measures concentrations of ionic species by separating them based on their interaction with a resin. Ionic species separate differently depending on species type and size. Ion chromatographs are able to measure concentrations of major anions, such as fluoride, chloride, nitrate, nitrite, and sulfate, as well as major cations such as lithium, sodium, ammonium, potassium, calcium, and magnesium in the parts-per-billion (ppb) range. (from http://serc.carleton.edu/microbelife/research_methods/biogeochemical/ic.html)
attribute	NC_GLOBAL	instruments_1_instrument_name	String	Ion Chromatograph
attribute	NC_GLOBAL	instruments_1_instrument_nid	String	662
attribute	NC_GLOBAL	instruments_1_supplied_name	String	Thermo-Fisher Dionex ICS-5000 ion chromatograph
attribute	NC_GLOBAL	instruments_2_acronym	String	Automatic titrator
attribute	NC_GLOBAL	instruments_2_dataset_instrument_description	String	Used to measure alkalinity and initial pH.
attribute	NC_GLOBAL	instruments_2_dataset_instrument_nid	String	748146
attribute	NC_GLOBAL	instruments_2_description	String	Instruments that incrementally add quantified aliquots of a reagent to a sample until the end-point of a chemical reaction is reached.
attribute	NC_GLOBAL	instruments_2_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/LAB12/
attribute	NC_GLOBAL	instruments_2_instrument_name	String	Automatic titrator
attribute	NC_GLOBAL	instruments_2_instrument_nid	String	682
attribute	NC_GLOBAL	instruments_2_supplied_name	String	Metrohm automatic titrator (model 785 DMP Titrino)
attribute	NC_GLOBAL	instruments_3_acronym	String	Automatic titrator
attribute	NC_GLOBAL	instruments_3_dataset_instrument_description	String	Used to measure alkalinity
attribute	NC_GLOBAL	instruments_3_dataset_instrument_nid	String	745940
attribute	NC_GLOBAL	instruments_3_description	String	Instruments that incrementally add quantified aliquots of a reagent to a sample until the end-point of a chemical reaction is reached.
attribute	NC_GLOBAL	instruments_3_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/LAB12/
attribute	NC_GLOBAL	instruments_3_instrument_name	String	Automatic titrator
attribute	NC_GLOBAL	instruments_3_instrument_nid	String	682
attribute	NC_GLOBAL	instruments_4_acronym	String	Conductivity Meter
attribute	NC_GLOBAL	instruments_4_dataset_instrument_description	String	Used to measure dissolved inorganic carbon.
attribute	NC_GLOBAL	instruments_4_dataset_instrument_nid	String	748153
attribute	NC_GLOBAL	instruments_4_description	String	Conductivity Meter - An electrical conductivity meter (EC meter) measures the electrical conductivity in a solution. Commonly used in hydroponics, aquaculture and freshwater systems to monitor the amount of nutrients, salts or impurities in the water.
attribute	NC_GLOBAL	instruments_4_instrument_name	String	Conductivity Meter
attribute	NC_GLOBAL	instruments_4_instrument_nid	String	719
attribute	NC_GLOBAL	instruments_4_supplied_name	String	Dionex CDM-II conductivity detector
attribute	NC_GLOBAL	keywords	String	alk, Alk_stdev, bco, bco-dmo, biological, bottles, chemical, collected, commerce, data, dataset, date, department, deviation, dic, DIC_stdev, dmo, doc, DOC_stdev, erddap, initial, initial_pH, initial_pH_stdev, iso, latitude, local, longitude, management, num, num_replicate_bottles, oceanography, office, preliminary, replicate, sample, sample_id, site, standard, standard deviation, stdev, sulfate, Sulfate_stdev, time
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/745932/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/745932
attribute	NC_GLOBAL	Northernmost_Northing	double	29.907
attribute	NC_GLOBAL	param_mapping	String	{'745932': {'lat': 'master - latitude', 'lon': 'master - longitude'}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/745932/parameters
attribute	NC_GLOBAL	people_0_affiliation	String	Old Dominion University
attribute	NC_GLOBAL	people_0_affiliation_acronym	String	ODU
attribute	NC_GLOBAL	people_0_person_name	String	David J Burdige
attribute	NC_GLOBAL	people_0_person_nid	String	648653
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
attribute	NC_GLOBAL	people_1_person_name	String	Matthew Long
attribute	NC_GLOBAL	people_1_person_nid	String	560155
attribute	NC_GLOBAL	people_1_role	String	Co-Principal Investigator
attribute	NC_GLOBAL	people_1_role_type	String	originator
attribute	NC_GLOBAL	people_2_affiliation	String	Old Dominion University
attribute	NC_GLOBAL	people_2_affiliation_acronym	String	ODU
attribute	NC_GLOBAL	people_2_person_name	String	Richard C. Zimmerman
attribute	NC_GLOBAL	people_2_person_nid	String	51308
attribute	NC_GLOBAL	people_2_role	String	Co-Principal Investigator
attribute	NC_GLOBAL	people_2_role_type	String	originator
attribute	NC_GLOBAL	people_3_affiliation	String	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_3_affiliation_acronym	String	WHOI BCO-DMO
attribute	NC_GLOBAL	people_3_person_name	String	Nancy Copley
attribute	NC_GLOBAL	people_3_person_nid	String	50396
attribute	NC_GLOBAL	people_3_role	String	BCO-DMO Data Manager
attribute	NC_GLOBAL	people_3_role_type	String	related
attribute	NC_GLOBAL	project	String	Seagrass Blue Carbon
attribute	NC_GLOBAL	projects_0_acronym	String	Seagrass Blue Carbon
attribute	NC_GLOBAL	projects_0_description	String	NSF abstract: This research will develop a quantitative understanding of the factors controlling carbon cycling in seagrass meadows that will improve our ability to quantify their potential as blue carbon sinks and predict their future response to climate change, including sea level rise, ocean warming and ocean acidification. This project will advance a new generation of bio-optical-geochemical models and tools (ECHOES) that have the potential to be transform our ability to measure and predict carbon dynamics in shallow water systems. This study will utilize cutting-edge methods for evaluating oxygen and carbon exchange (Eulerian and eddy covariance techniques) combined with biomass, sedimentary, and water column measurements to develop and test numerical models that can be scaled up to quantify the dynamics of carbon cycling and sequestration in seagrass meadows in temperate and tropical environments of the West Atlantic continental margin that encompass both siliciclastic and carbonate sediments. The comparative analysis across latitudinal and geochemical gradients will address the relative contributions of different species and geochemical processes to better constrain the role of seagrass carbon sequestration to global biogeochemical cycles. Specifically the research will quantify: (i) the relationship between C stocks and standing biomass for different species with different life histories and structural complexity, (ii) the influence of above- and below-ground metabolism on carbon exchange, and (iii) the influence of sediment type (siliciclastic vs. carbonate) on Blue Carbon storage. Seagrass biomass, growth rates, carbon content and isotope composition (above- and below-ground), organic carbon deposition and export will be measured. Sedimentation rates and isotopic composition of PIC, POC, and iron sulfide precipitates, as well as porewater concentrations of dissolved sulfide, CO2, alkalinity and salinity will be determined in order to develop a bio-optical-geochemical model that will predict the impact of seagrass metabolism on sediment geochemical processes that control carbon cycling in shallow waters. Model predictions will be validated against direct measurements of DIC and O2 exchange in seagrass meadows, enabling us to scale-up the density-dependent processes to predict the impacts of seagrass distribution and density on carbon cycling and sequestration across the submarine landscape. Status, as of 09 June 2016: This project has been recommended for funding by NSF's Division of Ocean Sciences.
attribute	NC_GLOBAL	projects_0_end_date	String	2019-07
attribute	NC_GLOBAL	projects_0_geolocation	String	Chesapeake Bay, Northern Gulf of Mexico, and Bahamas Banks
attribute	NC_GLOBAL	projects_0_name	String	Toward an Improved Understanding of Blue Carbon: The Role of Seagrasses in Sequestering CO2
attribute	NC_GLOBAL	projects_0_project_nid	String	648649
attribute	NC_GLOBAL	projects_0_start_date	String	2016-08
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	29.853
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	summary	String	This dataset includes results of analysis on sediment core bottom water samples collected from the northern Gulf of Mexico in May 2017 - initial pH, alkalinity, sulfate, DIC, and DOC.
attribute	NC_GLOBAL	title	String	[Gulf of Mexico bottom water analysis] - Chemical analysis from sediment core bottom water samples collected in the northern Gulf of Mexico, May 2017 (Toward an Improved Understanding of Blue Carbon: The Role of Seagrasses in Sequestering CO2)
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	Westernmost_Easting	double	-84.552
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.3
variable	sample_id		byte
attribute	sample_id	_FillValue	byte	127
attribute	sample_id	actual_range	byte	1, 11
attribute	sample_id	bcodmo_name	String	core_id
attribute	sample_id	description	String	sample id
attribute	sample_id	long_name	String	Sample Id
attribute	sample_id	units	String	unitless
variable	site		String
attribute	site	bcodmo_name	String	site
attribute	site	description	String	site
attribute	site	long_name	String	Site
attribute	site	units	String	unitless
variable	latitude		double
attribute	latitude	_CoordinateAxisType	String	Lat
attribute	latitude	_FillValue	double	NaN
attribute	latitude	actual_range	double	29.853, 29.907
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 is positive
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	-84.552, -84.456
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 is positive
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	ISO_DateTime_Local_collected		String
attribute	ISO_DateTime_Local_collected	bcodmo_name	String	date_local
attribute	ISO_DateTime_Local_collected	description	String	local date and time collected formatted as YYYY-MM-DDTHH:MM:SS (ISO 8601:2004€ )
attribute	ISO_DateTime_Local_collected	long_name	String	ISO Date Time Local Collected
attribute	ISO_DateTime_Local_collected	source_name	String	ISO_DateTime_Local_collected
attribute	ISO_DateTime_Local_collected	time_precision	String	1970-01-01T00:00:00Z
attribute	ISO_DateTime_Local_collected	units	String	unitless
variable	num_replicate_bottles		byte
attribute	num_replicate_bottles	_FillValue	byte	127
attribute	num_replicate_bottles	actual_range	byte	2, 3
attribute	num_replicate_bottles	bcodmo_name	String	num_reps
attribute	num_replicate_bottles	description	String	number of replicate bottles collected
attribute	num_replicate_bottles	long_name	String	Num Replicate Bottles
attribute	num_replicate_bottles	units	String	bottles
variable	initial_pH		String
attribute	initial_pH	bcodmo_name	String	pH
attribute	initial_pH	description	String	initial pH determined during alkalinity titrations
attribute	initial_pH	long_name	String	Initial P H
attribute	initial_pH	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/PHXXZZXX/
attribute	initial_pH	units	String	NBS scale
variable	initial_pH_stdev		float
attribute	initial_pH_stdev	_FillValue	float	NaN
attribute	initial_pH_stdev	actual_range	float	0.0, 0.05
attribute	initial_pH_stdev	bcodmo_name	String	pH
attribute	initial_pH_stdev	description	String	initial pH determined during alkalinity titrations
attribute	initial_pH_stdev	long_name	String	Initial P H Stdev
attribute	initial_pH_stdev	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/PHXXZZXX/
attribute	initial_pH_stdev	units	String	NBS scale
variable	Alk		String
attribute	Alk	bcodmo_name	String	TALK
attribute	Alk	description	String	pore water alkalinity
attribute	Alk	long_name	String	Alk
attribute	Alk	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/MDMAP014/
attribute	Alk	units	String	milliMoles
variable	Alk_stdev		float
attribute	Alk_stdev	_FillValue	float	NaN
attribute	Alk_stdev	actual_range	float	0.002, 0.06
attribute	Alk_stdev	bcodmo_name	String	TALK
attribute	Alk_stdev	description	String	pore water sulfate
attribute	Alk_stdev	long_name	String	Alk Stdev
attribute	Alk_stdev	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/MDMAP014/
attribute	Alk_stdev	units	String	milliMoles
variable	Sulfate		String
attribute	Sulfate	bcodmo_name	String	SO4
attribute	Sulfate	description	String	standard deviation of sulfate concentration
attribute	Sulfate	long_name	String	Sulfate
attribute	Sulfate	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/SPHTMAXX/
attribute	Sulfate	units	String	milliMoles
variable	Sulfate_stdev		float
attribute	Sulfate_stdev	_FillValue	float	NaN
attribute	Sulfate_stdev	actual_range	float	0.07, 0.65
attribute	Sulfate_stdev	bcodmo_name	String	SO4
attribute	Sulfate_stdev	description	String	pore water dissolved inorganic carbon
attribute	Sulfate_stdev	long_name	String	Sulfate Stdev
attribute	Sulfate_stdev	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/SPHTMAXX/
attribute	Sulfate_stdev	units	String	milliMoles
variable	DIC		float
attribute	DIC	_FillValue	float	NaN
attribute	DIC	actual_range	float	1.63, 2.17
attribute	DIC	bcodmo_name	String	DIC
attribute	DIC	description	String	pore water dissolved iron
attribute	DIC	long_name	String	DIC
attribute	DIC	units	String	microMoles
variable	DIC_stdev		float
attribute	DIC_stdev	_FillValue	float	NaN
attribute	DIC_stdev	actual_range	float	0.01, 0.04
attribute	DIC_stdev	bcodmo_name	String	DIC
attribute	DIC_stdev	description	String	pore water dissolved ammonium
attribute	DIC_stdev	long_name	String	DIC Stdev
attribute	DIC_stdev	units	String	microMoles
variable	DOC		String
attribute	DOC	bcodmo_name	String	DOC
attribute	DOC	description	String	pore water total dissolved sulfide
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
variable	DOC_stdev		float
attribute	DOC_stdev	_FillValue	float	NaN
attribute	DOC_stdev	actual_range	float	9.92, 57.19
attribute	DOC_stdev	bcodmo_name	String	DOC
attribute	DOC_stdev	description	String	pore water dissolved organic carbon
attribute	DOC_stdev	long_name	String	DOC Stdev
attribute	DOC_stdev	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/CORGZZZX/
attribute	DOC_stdev	units	String	microMoles

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.