ERDDAP > info > bcodmo_dataset_745865

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 pore water analysis] - Chemical analysis from sediment core pore 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_745865

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).\u00a0 Sulfate was determined by ion chromatography and conductivity detection with a Thermo-Fisher Dionex ICS-5000 ion chromatograph, while DOC was determined by high temperature combustion using a Shimadzu TOC-V total carbon analyzer (Burdige and Komada, 2011; Komada et al. 2016).\u00a0 Ammonium and 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).\u00a0 Total dissolved sulfide was determined spectrophotometrically with an Ocean Optics USB400 UV-Vis spectrophotometer (Cline, 1969; Abdulla et al., in prep.); Total dissolved iron was also determined spectrophotometrically by the ferrozine method using the same spectrophotometer\u00a0 (Viollier et al., 2000). 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	Pore water analysis collected June 2017 in the northern Gulf of Mexico PI: D. Burdige (ODU) Co-PIs: R. Zimmerman (ODU), M. Long (WHOI) version date: 2018-09-04
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	2018-09-11T16:04:12Z
attribute	NC_GLOBAL	date_modified	String	2019-03-20T16:08:15Z
attribute	NC_GLOBAL	defaultDataQuery	String	&time<now
attribute	NC_GLOBAL	doi	String	10.1575/1912/bco-dmo.745865.1
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/745865
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	748159
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	748157
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	745930
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	Spectrophotometer
attribute	NC_GLOBAL	instruments_3_dataset_instrument_description	String	Used to measure total dissolved sulfide and total dissolved iron.
attribute	NC_GLOBAL	instruments_3_dataset_instrument_nid	String	748161
attribute	NC_GLOBAL	instruments_3_description	String	An instrument used to measure the relative absorption of electromagnetic radiation of different wavelengths in the near infra-red, visible and ultraviolet wavebands by samples.
attribute	NC_GLOBAL	instruments_3_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/LAB20/
attribute	NC_GLOBAL	instruments_3_instrument_name	String	Spectrophotometer
attribute	NC_GLOBAL	instruments_3_instrument_nid	String	707
attribute	NC_GLOBAL	instruments_3_supplied_name	String	Ocean Optics USB400 UV-Vis spectrophotometer
attribute	NC_GLOBAL	instruments_4_acronym	String	Conductivity Meter
attribute	NC_GLOBAL	instruments_4_dataset_instrument_description	String	Used to measure ammonium and dissolved inorganic carbon.
attribute	NC_GLOBAL	instruments_4_dataset_instrument_nid	String	748160
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	alkalinity, Alkalinity_mM, ammonium, bco, bco-dmo, biological, chemical, commerce, core, data, dataset, department, depth, Depth_cm, deviation, dic, DIC_mM, dmo, doc, DOC_uM, erddap, Fe_uM, initial, Initial_pH, latitude, longitude, management, nh4, NH4_uM, oceanography, office, preliminary, site, standard, standard deviation, stdev, sulfate, Sulfate_mM, Sulfate_stdev, sulfide, Sulfide_uM, u
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/745865/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/745865
attribute	NC_GLOBAL	Northernmost_Northing	double	29.907
attribute	NC_GLOBAL	param_mapping	String	{'745865': {'lat': 'master - latitude', 'lon': 'master - longitude'}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/745865/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 cores collected from the northern Gulf of Mexico in May 2017 - initial pH, alkalinity, sulfate, DIC, Fe, NH4, sulfide, and DOC.
attribute	NC_GLOBAL	title	String	[Gulf of Mexico pore water analysis] - Chemical analysis from sediment core pore 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	site		String
attribute	site	bcodmo_name	String	site
attribute	site	description	String	sample collection site identifier
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	Core		byte
attribute	Core	_FillValue	byte	127
attribute	Core	actual_range	byte	1, 10
attribute	Core	bcodmo_name	String	core_id
attribute	Core	description	String	core number
attribute	Core	long_name	String	Core
attribute	Core	units	String	unitless
variable	Depth_cm		byte
attribute	Depth_cm	_FillValue	byte	127
attribute	Depth_cm	actual_range	byte	1, 24
attribute	Depth_cm	bcodmo_name	String	depth_core
attribute	Depth_cm	colorBarMaximum	double	8000.0
attribute	Depth_cm	colorBarMinimum	double	-8000.0
attribute	Depth_cm	colorBarPalette	String	TopographyDepth
attribute	Depth_cm	description	String	depth in the core (relative to the sediment surface)
attribute	Depth_cm	long_name	String	Depth
attribute	Depth_cm	standard_name	String	depth
attribute	Depth_cm	units	String	centimeters
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	Alkalinity_mM		String
attribute	Alkalinity_mM	bcodmo_name	String	TALK
attribute	Alkalinity_mM	description	String	pore water alkalinity
attribute	Alkalinity_mM	long_name	String	Alkalinity M M
attribute	Alkalinity_mM	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/MDMAP014/
attribute	Alkalinity_mM	units	String	milliMoles
variable	Sulfate_mM		String
attribute	Sulfate_mM	bcodmo_name	String	SO4
attribute	Sulfate_mM	description	String	pore water sulfate
attribute	Sulfate_mM	long_name	String	Sulfate M M
attribute	Sulfate_mM	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/SPHTMAXX/
attribute	Sulfate_mM	units	String	milliMoles
variable	Sulfate_stdev		float
attribute	Sulfate_stdev	_FillValue	float	NaN
attribute	Sulfate_stdev	actual_range	float	0.01, 4.13
attribute	Sulfate_stdev	bcodmo_name	String	SO4
attribute	Sulfate_stdev	description	String	standard deviation of sulfate concentration
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_mM		String
attribute	DIC_mM	bcodmo_name	String	DIC
attribute	DIC_mM	description	String	pore water dissolved inorganic carbon
attribute	DIC_mM	long_name	String	DIC M M
attribute	DIC_mM	units	String	milliMoles
variable	Fe_uM		String
attribute	Fe_uM	bcodmo_name	String	Fe
attribute	Fe_uM	description	String	pore water dissolved iron
attribute	Fe_uM	long_name	String	Fe U M
attribute	Fe_uM	units	String	microMoles
variable	NH4_uM		String
attribute	NH4_uM	bcodmo_name	String	Ammonium
attribute	NH4_uM	description	String	pore water dissolved ammonium
attribute	NH4_uM	long_name	String	NH4 U M
attribute	NH4_uM	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/AMONAAZX/
attribute	NH4_uM	units	String	microMoles
variable	Sulfide_uM		String
attribute	Sulfide_uM	bcodmo_name	String	sulfide
attribute	Sulfide_uM	description	String	pore water total dissolved sulfide
attribute	Sulfide_uM	long_name	String	Sulfide U M
attribute	Sulfide_uM	units	String	microMoles
variable	DOC_uM		String
attribute	DOC_uM	bcodmo_name	String	DOC
attribute	DOC_uM	description	String	pore water dissolved organic carbon
attribute	DOC_uM	long_name	String	DOC U M
attribute	DOC_uM	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/CORGZZZX/
attribute	DOC_uM	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.