ERDDAP > info > bcodmo_dataset_813166

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	[Pore water geochemistry] - Pore water geochemistry from sediment cores collected on the R/V Nathaniel B. Palmer cruise NBP1601 to the West Antarctic continental shelf in January of 2016 (Organic Carbon Oxidation and Iron Remobilization by West Antarctic Shelf Sediments)		F   I   M	background			BCO-DMO	bcodmo_dataset_813166

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	Sediment and pore water collection: Short sediment cores were collected using a Bowers & Connelly megacorer, a multiple coring device that can collect ~20-40 cm long sediment cores with undisturbed sediment surfaces. At two sites (stations 41 and 64) longer cores (up to ~2 m) were also collected with a Kasten corer. Megacorer cores were either sectioned for solid phase analysis, profiled with polarographic microelectrodes to determine dissolved O2 concentrations, or sectioned in a cold van under N2 for pore water sample extraction (for details see, Komada et al., 2016). Kasten cores were brought into a large cold room on-board ship, laid on their side and one side of the core box removed to expose the sediment in the core. A plastic block was placed against the top of the core to prevent slumping of the sediment during processing, and pore waters were collected from these cores using Rhizon samplers (Seeberg- Elverfeldt et al., 2005) inserted directly into the cores at measured intervals. Pore water samples collected from both types of cores were filtered through 0.45 \u00b5m polycarbonate filters and processed as follows. Samples for alkalinity determinations were stored without a headspace in 3-ml plastic syringes sealed with 3-way stopcocks. Titrated alkalinity samples (acidified to pH ~4 after titration) were stored in plastic snap cap vials, refrigerated and returned to ODU for the analysis of dissolved sulfate. Pore water samples collected for the analysis of total dissolved Fe and Mn were acidified to pH <2 on-board ship with trace metal grade HCl, and store refrigerated until analyzed back at ODU. Samples for pore water silicate analyses were analyzed on board the research vessel. Additional samples for the analysis of other dissolved nutrients (nitrate, nitrite, ammonium, phosphate) were filtered into tightly capped sample vials and frozen for return to NEOL for analysis. Selected pore water samples (collected as described above) were also used for the determination of dissolved organic carbon (DOC). These samples were filtered directly into acid-cleaned and muffled (550 \u00b0C for at least 4 h) glass ampules and were then acidified to pH < 2 with 6 N trace metal grade HCl and flame-sealed under a stream of UHP N2 gas. The sealed ampules were stored refrigerated and returned to ODU for analysis. While it is possible to recover cores with intact sediment-water interfaces using a megacorer, loss of surface sediments is typical during Kasten coring, making it not possible to directly determine absolute depths below the sediment-water interface in a Kasten core. We therefore determined the absolute depths of pore water and solid phase sample intervals from Kasten cores by aligning Kasten core profiles of pore water alkalinity to megacore alkalinity profiles from the same site (Berelson et al., 2005; Komada et al., 2016). Bottom water collection: Bottom waters were collected by GO-Flo Bottles ~5-10 m off the seafloor. They were filtered through 0.45 \u00b5m polycarbonate filters and processed as described above for pore water samples. Pore water analyses: Sampled collected for alkalinity determination were titrated aboard ship within 12 hours of collection by automated Gran titration (Hu and Burdige, 2008). Dissolved sulfate was determined on titrated alkalinity samples returned to ODU by ion chromatography and conductivity detection (Thermo-Scientific Dionex ICS-5000; Burdige and Komada, 2011; Komada et al., 2016). Concentrations of DOC were determined at ODU by high temperature combustion using a Shimadzu TOC-V total carbon analyzer (Komada et al., 2013; Komada et al., 2016). Frozen samples for the determination of dissolved nutrients were returned to NEOL and analyzed by autoanalyzer for nitrate and nitrite (Armstrong et al., 1967; Pavlou, 1972), ammonium (Koroleff, 1970; Slawyk and MacIsaac, 1972) and dissolved inorganic phosphate (Drummond and Maher, 1995). Pore water silicate was determined on board the research vessel used fresh pore water samples and a manual colorimetric method following Armstrong et al. (1967). Pore water dissolved iron was determined colorimetrically at ODU using the ferrozine technique (Stookey, 1970; Viollier et al., 2000). Hydroxylamine-HCl (0.2% final concentration) was added to the samples before analysis, to reduce any dissolved Fe3+ in the samples to Fe2+. The pore water iron results reported here therefore represent total dissolved iron (i.e., Fe2+ plus any Fe3+ in the samples). This was done largely as a precaution against any iron oxidation that may have occurred during sample storage, since it is assumed that virtually all of the dissolved iron in these pore waters exists in situ as Fe2+ (e.g., Viollier et al., 2000). Samples for the analysis of dissolved manganese were determined with a modification of the colorimetric formaldoxime method (Armstrong et al., 1979; Goto et al., 1962). These modifications were made based on the observation that the amount of EDTA typically added to destroy the Fe-formaldoxime complexes that interfere with the colorimetric determination of the Mn- formaldoxime complexes was insufficient because of the complexation (and presumed competition) of this EDTA by the much higher levels of dissolved Ca2+ and Mg2+ in our pore water samples ( 60 mM assuming a pore water salinity of ~35). Thus it was necessary to increase the amount of EDTA added to the samples so that it exceeded these Ca2+ plus Mg2+ levels. In our method we made the formaldoxime mixed reagent by dissolving 8 g of hydroxylamine hydrochloride and 4ml formaldehyde (37%) in 200 ml of distilled deionized water. Next we combined 0.5 ml of either a pore water sample or Mn2+ standard with 0.5 ml of distilled deionized water and: 50 \u00b5l of the formaldoxime mixed reagent, 50 \u00b5l of concentrated (50%) NH4OH, 50 \u00b5l of a 20% hydroxylamine hydrochloride solution, and 0.2 ml of a 250 mM EDTA solution. The color of the solution was allowed to develop for 20 min. and then analyzed at 450 nm.
attribute	NC_GLOBAL	awards_0_award_nid	String	806863
attribute	NC_GLOBAL	awards_0_award_number	String	OPP-1551195
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1551195
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	Michael E. Jackson
attribute	NC_GLOBAL	awards_0_program_manager_nid	String	806862
attribute	NC_GLOBAL	cdm_data_type	String	Other
attribute	NC_GLOBAL	comment	String	Pore water geochemistry PI: David J Burdige Data Version 1: 2020-06-08
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	dataset_current_state	String	Final and no updates
attribute	NC_GLOBAL	date_created	String	2020-05-27T22:59:42Z
attribute	NC_GLOBAL	date_modified	String	2020-06-17T23:05:28Z
attribute	NC_GLOBAL	defaultDataQuery	String	&amp;time&lt;now
attribute	NC_GLOBAL	doi	String	10.26008/1912/bco-dmo.813166.1
attribute	NC_GLOBAL	Easternmost_Easting	double	-62.7317
attribute	NC_GLOBAL	geospatial_lat_max	double	-64.1583
attribute	NC_GLOBAL	geospatial_lat_min	double	-67.7717
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	-62.7317
attribute	NC_GLOBAL	geospatial_lon_min	double	-71.2217
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/813166
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	instruments_0_acronym	String	GO-FLO
attribute	NC_GLOBAL	instruments_0_dataset_instrument_nid	String	814590
attribute	NC_GLOBAL	instruments_0_description	String	GO-FLO bottle cast used to collect water samples for pigment, nutrient, plankton, etc. The GO-FLO sampling bottle is specially designed 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_0_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/30/
attribute	NC_GLOBAL	instruments_0_instrument_name	String	GO-FLO Bottle
attribute	NC_GLOBAL	instruments_0_instrument_nid	String	411
attribute	NC_GLOBAL	instruments_1_acronym	String	Gravity Corer
attribute	NC_GLOBAL	instruments_1_dataset_instrument_nid	String	814589
attribute	NC_GLOBAL	instruments_1_description	String	The gravity corer allows researchers to sample sediment layers at the bottom of lakes or oceans. The coring device is deployed from the ship and gravity carries it to the seafloor. (https://www.whoi.edu/instruments/viewInstrument.do?id=1079).
attribute	NC_GLOBAL	instruments_1_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/51/
attribute	NC_GLOBAL	instruments_1_instrument_name	String	Gravity Corer
attribute	NC_GLOBAL	instruments_1_instrument_nid	String	531
attribute	NC_GLOBAL	instruments_1_supplied_name	String	Kasten corer
attribute	NC_GLOBAL	instruments_2_acronym	String	Multi Corer
attribute	NC_GLOBAL	instruments_2_dataset_instrument_nid	String	814588
attribute	NC_GLOBAL	instruments_2_description	String	The Multi Corer is a benthic coring device used to collect multiple, simultaneous, undisturbed sediment/water samples from the seafloor. Multiple coring tubes with varying sampling capacity depending on tube dimensions are mounted in a frame designed to sample the deep ocean seafloor. For more information, see Barnett et al. (1984) in Oceanologica Acta, 7, pp. 399-408.
attribute	NC_GLOBAL	instruments_2_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/51/
attribute	NC_GLOBAL	instruments_2_instrument_name	String	Multi Corer
attribute	NC_GLOBAL	instruments_2_instrument_nid	String	532
attribute	NC_GLOBAL	instruments_2_supplied_name	String	Bowers & Connelly megacorer
attribute	NC_GLOBAL	instruments_3_acronym	String	Nutrient Autoanalyzer
attribute	NC_GLOBAL	instruments_3_dataset_instrument_description	String	Frozen samples for the determination of dissolved nutrients were returned to NEOL and analyzed by autoanalyzer for nitrate and nitrite (Armstrong et al., 1967; Pavlou, 1972), ammonium (Koroleff, 1970; Slawyk and MacIsaac, 1972) and dissolved inorganic phosphate (Drummond and Maher, 1995).
attribute	NC_GLOBAL	instruments_3_dataset_instrument_nid	String	814592
attribute	NC_GLOBAL	instruments_3_description	String	Nutrient Autoanalyzer is a generic term used when specific type, make and model were not specified. In general, a Nutrient Autoanalyzer is an automated flow-thru system for doing nutrient analysis (nitrate, ammonium, orthophosphate, and silicate) on seawater samples.
attribute	NC_GLOBAL	instruments_3_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/LAB04/
attribute	NC_GLOBAL	instruments_3_instrument_name	String	Nutrient Autoanalyzer
attribute	NC_GLOBAL	instruments_3_instrument_nid	String	558
attribute	NC_GLOBAL	instruments_4_acronym	String	Shimadzu TOC-V
attribute	NC_GLOBAL	instruments_4_dataset_instrument_nid	String	814591
attribute	NC_GLOBAL	instruments_4_description	String	A Shimadzu TOC-V Analyzer measures DOC by high temperature combustion method.
attribute	NC_GLOBAL	instruments_4_instrument_external_identifier	String	http://onto.nerc.ac.uk/CAST/124
attribute	NC_GLOBAL	instruments_4_instrument_name	String	Shimadzu TOC-V Analyzer
attribute	NC_GLOBAL	instruments_4_instrument_nid	String	603
attribute	NC_GLOBAL	instruments_4_supplied_name	String	Shimadzu TOC-V total carbon analyzer (Komada et al., 2013; Komada et al., 2016).
attribute	NC_GLOBAL	keywords	String	alk, ammonia, ammonium, bco, bco-dmo, biological, chemical, chemistry, commerce, concentration, core, data, dataset, date, department, depth, dmo, doc, earth, Earth Science > Oceans > Ocean Chemistry > Ammonia, Earth Science > Oceans > Ocean Chemistry > Nitrate, Earth Science > Oceans > Ocean Chemistry > pH, Earth Science > Oceans > Ocean Chemistry > Phosphate, Earth Science > Oceans > Ocean Chemistry > Silicate, erddap, error, iso, latitude, longitude, management, mass, mass_concentration_of_phosphate_in_sea_water, mass_concentration_of_silicate_in_sea_water, mole, mole_concentration_of_ammonium_in_sea_water, mole_concentration_of_nitrate_in_sea_water, mole_concentration_of_nitrite_in_sea_water, n02, nh4, nitrate, nitrite, NO2, no3, ocean, oceanography, oceans, office, phosphate, po4, preliminary, reported, Sa_ID, samp, scale, science, sea, sea_water_ph_reported_on_total_scale, seawater, silicate, so4, St_ID, time, total, water
attribute	NC_GLOBAL	keywords_vocabulary	String	GCMD Science Keywords
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/813166/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/813166
attribute	NC_GLOBAL	Northernmost_Northing	double	-64.1583
attribute	NC_GLOBAL	param_mapping	String	{'813166': {'Lat': 'master - latitude', 'Lon': 'master - longitude', 'ISO_DateTime_UTC': 'master - time'}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/813166/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	New England Oceanographic Laboratory
attribute	NC_GLOBAL	people_1_affiliation_acronym	String	NEOL
attribute	NC_GLOBAL	people_1_person_name	String	John P Christensen
attribute	NC_GLOBAL	people_1_person_nid	String	51603
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	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_2_affiliation_acronym	String	WHOI BCO-DMO
attribute	NC_GLOBAL	people_2_person_name	String	Amber D. York
attribute	NC_GLOBAL	people_2_person_nid	String	643627
attribute	NC_GLOBAL	people_2_role	String	BCO-DMO Data Manager
attribute	NC_GLOBAL	people_2_role_type	String	related
attribute	NC_GLOBAL	project	String	Antarctic Shelf Sediments
attribute	NC_GLOBAL	projects_0_acronym	String	Antarctic Shelf Sediments
attribute	NC_GLOBAL	projects_0_description	String	NSF Award Abstract: General Statement: The continental shelf region west of the Antarctic Peninsula has recently undergone dramatic changes and ecosystem shifts, and the community of organisms that live in, or feed off, the sea floor sediments is being impacted by species invasions from the north. Previous studies of these sediments indicate that this community may consume much more of the regional productivity than previously estimated, suggesting that sediments are a rich and important component of this ecosystem and one that may be ripe for dramatic change. Furthermore, under richer sediment conditions, iron is mobilized and released back to the water column. Since productivity in this ecosystem is thought to be limited by the availability of iron, increased rates of iron release from these sediments could stimulate productivity and promote greater overall ecosystem change. In this research, a variety of sites across the shelf region will be sampled to accurately evaluate the role of sediments in consuming ecosystem productivity and to estimate the current level of iron release from the sediments. This project will provide a baseline set of sediment results that will present a more complete picture of the west Antarctic shelf ecosystem, will allow for comparison with water column measurements and for evaluation of the fundamental workings of this important ecosystem. This is particularly important since high latitude systems may be vulnerable to the effects of climate fluctuations. Both graduate and undergraduate students will be trained. Presentations will be made at scientific meetings, at other universities, and at outreach events. A project web site will present key results to the public and explain how this new information improves understanding of Antarctic ecosystems. Technical Description of Project: In order to determine the role of sediments within the west Antarctic shelf ecosystem, this project will determine the rates of sediment organic matter oxidation at a variety of sites across the Palmer Long Term Ecosystem Research (LTER) study region. To estimate the rates of release of iron and manganese from the sediments, these same sites will be sampled for detailed vertical distributions of the concentrations of these metals both in the porewaters and in important mineral phases. Since sediment sampling will be done at LTER sites, the sediment data can be correlated with the rich productivity data set from the LTER. In detail, the project: a) will determine the rates of oxygen consumption, organic carbon oxidation, nutrient release, and iron mobilization by shelf sediments west of the Antarctic Peninsula; b) will investigate the vertical distribution of diagenetic reactions within the sediments; and c) will assess the regional importance of these sediment rates. Sediment cores will be used to determine sediment-water fluxes of dissolved oxygen, total carbon dioxide, nutrients, and the vertical distributions of these dissolved compounds, as well as iron and manganese in the pore waters. Bulk sediment properties of porosity, organic carbon and nitrogen content, carbonate content, biogenic silica content, and multiple species of solid-phase iron, manganese, and sulfur species will also be determined. These measurements will allow determination of total organic carbon oxidation and denitrification rates, and the proportion of aerobic versus anaerobic respiration at each site. Sediment diagenetic modeling will link the processes of organic matter oxidation to metal mobilization. Pore water and solid phase iron and manganese distributions will be used to model iron diagenesis in these sediments and to estimate the iron flux from the sediments to the overlying waters. Finally, the overall regional average and distribution of the sediment processes will be compared with the distributions of seasonally averaged chlorophyll biomass and productivity.
attribute	NC_GLOBAL	projects_0_end_date	String	2020-02
attribute	NC_GLOBAL	projects_0_geolocation	String	West Antarctic Continental Shelf
attribute	NC_GLOBAL	projects_0_name	String	Organic Carbon Oxidation and Iron Remobilization by West Antarctic Shelf Sediments
attribute	NC_GLOBAL	projects_0_project_nid	String	806864
attribute	NC_GLOBAL	projects_0_start_date	String	2015-09
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	-67.7717
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	summary	String	Pore water geochemistry from sediment cores collected on the R/V Nathaniel B. Palmer cruise NBP1601 to the West Antarctic continental shelf in January of 2016.
attribute	NC_GLOBAL	time_coverage_end	String	2019-01-28T09:36Z
attribute	NC_GLOBAL	time_coverage_start	String	2016-01-14T17:34Z
attribute	NC_GLOBAL	title	String	[Pore water geochemistry] - Pore water geochemistry from sediment cores collected on the R/V Nathaniel B. Palmer cruise NBP1601 to the West Antarctic continental shelf in January of 2016 (Organic Carbon Oxidation and Iron Remobilization by West Antarctic Shelf Sediments)
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	Westernmost_Easting	double	-71.2217
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.5
variable	St_ID		String
attribute	St_ID	bcodmo_name	String	station
attribute	St_ID	description	String	station ID #
attribute	St_ID	long_name	String	St ID
attribute	St_ID	units	String	unitless
variable	Sa_ID		String
attribute	Sa_ID	bcodmo_name	String	sample
attribute	Sa_ID	description	String	sample ID (station ID #- core ID #-sample # (BW = bottom water sample; note BW samples have no sample #)
attribute	Sa_ID	long_name	String	Sa ID
attribute	Sa_ID	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P02/current/ACYC/
attribute	Sa_ID	units	String	unitless
variable	Core		String
attribute	Core	bcodmo_name	String	sample_type
attribute	Core	description	String	core type (H = samples collected by hydrocast; M = mega-corer; K = Kasten corer)
attribute	Core	long_name	String	Core
attribute	Core	units	String	unitless
variable	Samp		String
attribute	Samp	bcodmo_name	String	sample_descrip
attribute	Samp	description	String	how pore waters/bottom waters were collected (C = centrifugation; R = rhizon sampler; G = hydrocast/GO-Flo bottle; see Methodology for details)
attribute	Samp	long_name	String	Samp
attribute	Samp	units	String	unitless
variable	Depth		float
attribute	Depth	_FillValue	float	NaN
attribute	Depth	actual_range	float	0.0, 225.0
attribute	Depth	bcodmo_name	String	depth_bsf
attribute	Depth	colorBarMaximum	double	8000.0
attribute	Depth	colorBarMinimum	double	-8000.0
attribute	Depth	colorBarPalette	String	TopographyDepth
attribute	Depth	description	String	sediment depth (relative to the sediment-water interface; 0 = bottom water sample)
attribute	Depth	long_name	String	Depth
attribute	Depth	standard_name	String	depth
attribute	Depth	units	String	centimeters (cm)
variable	Error		float
attribute	Error	_FillValue	float	NaN
attribute	Error	actual_range	float	0.25, 1.5
attribute	Error	bcodmo_name	String	sample_descrip
attribute	Error	colorBarMaximum	double	50.0
attribute	Error	colorBarMinimum	double	0.0
attribute	Error	description	String	half the thickness of the sediment sample (note: Rhizon samples are collected at discrete depths and there is no error associated with their depths)
attribute	Error	long_name	String	Error
attribute	Error	units	String	centimeters (cm)
variable	pH		float
attribute	pH	_FillValue	float	NaN
attribute	pH	actual_range	float	0.0, 7.69
attribute	pH	bcodmo_name	String	pH
attribute	pH	colorBarMaximum	double	9.0
attribute	pH	colorBarMinimum	double	7.0
attribute	pH	description	String	initial pH of sample titrated for alkalinity
attribute	pH	long_name	String	Sea Water Ph Reported On Total Scale
attribute	pH	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/PHXXZZXX/
attribute	pH	units	String	NBS scale
variable	Alk		float
attribute	Alk	_FillValue	float	NaN
attribute	Alk	actual_range	float	0.0, 6.95
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	millimolar (mM)
variable	Fe		float
attribute	Fe	_FillValue	float	NaN
attribute	Fe	actual_range	float	0.0, 85.84
attribute	Fe	bcodmo_name	String	Fe
attribute	Fe	description	String	pore water total dissolved iron
attribute	Fe	long_name	String	Fe
attribute	Fe	units	String	micromolar (uM)
variable	Mn		float
attribute	Mn	_FillValue	float	NaN
attribute	Mn	actual_range	float	0.0, 16.23
attribute	Mn	bcodmo_name	String	Mn
attribute	Mn	description	String	pore water dissolved Mn
attribute	Mn	long_name	String	MN
attribute	Mn	units	String	micromolar (uM)
variable	SO4		float
attribute	SO4	_FillValue	float	NaN
attribute	SO4	actual_range	float	21.52, 34.0
attribute	SO4	bcodmo_name	String	SO4
attribute	SO4	description	String	pore water dissolved sulfate
attribute	SO4	long_name	String	SO4
attribute	SO4	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/SPHTMAXX/
attribute	SO4	units	String	millimolar (mM)
variable	DOC		float
attribute	DOC	_FillValue	float	NaN
attribute	DOC	actual_range	float	74.62, 1821.34
attribute	DOC	bcodmo_name	String	DOC
attribute	DOC	description	String	pore water dissolved organic carbon
attribute	DOC	long_name	String	DOC
attribute	DOC	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/CORGZZZX/
attribute	DOC	units	String	micromolar (uM)
variable	NO3		float
attribute	NO3	_FillValue	float	NaN
attribute	NO3	actual_range	float	0.0, 37.77
attribute	NO3	bcodmo_name	String	NO3
attribute	NO3	colorBarMaximum	double	50.0
attribute	NO3	colorBarMinimum	double	0.0
attribute	NO3	description	String	pore water dissolved nitrate
attribute	NO3	long_name	String	Mole Concentration Of Nitrate In Sea Water
attribute	NO3	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/NTRAIGGS/
attribute	NO3	units	String	micromolar (uM)
variable	NO2		float
attribute	NO2	_FillValue	float	NaN
attribute	NO2	actual_range	float	0.0, 3.42
attribute	NO2	bcodmo_name	String	NO2
attribute	NO2	colorBarMaximum	double	1.0
attribute	NO2	colorBarMinimum	double	0.0
attribute	NO2	description	String	pore water dissolved nitrite
attribute	NO2	long_name	String	Mole Concentration Of Nitrite In Sea Water
attribute	NO2	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/NTRIAAZX/
attribute	NO2	units	String	micromolar (uM)
variable	NH4		float
attribute	NH4	_FillValue	float	NaN
attribute	NH4	actual_range	float	0.0, 263.5
attribute	NH4	bcodmo_name	String	Ammonium
attribute	NH4	colorBarMaximum	double	5.0
attribute	NH4	colorBarMinimum	double	0.0
attribute	NH4	description	String	pore water dissolved ammonium
attribute	NH4	long_name	String	Mole Concentration Of Ammonium In Sea Water
attribute	NH4	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/AMONAAZX/
attribute	NH4	units	String	micromolar (uM)
variable	PO4		float
attribute	PO4	_FillValue	float	NaN
attribute	PO4	actual_range	float	6.35, 41.6
attribute	PO4	bcodmo_name	String	PO4
attribute	PO4	description	String	pore water dissolved orthophosphate
attribute	PO4	long_name	String	Mass Concentration Of Phosphate In Sea Water
attribute	PO4	units	String	micromolar (uM)
variable	Si		float
attribute	Si	_FillValue	float	NaN
attribute	Si	actual_range	float	155.1, 838.2
attribute	Si	bcodmo_name	String	Si
attribute	Si	description	String	pore water dissolved silicate
attribute	Si	long_name	String	Mass Concentration Of Silicate In Sea Water
attribute	Si	units	String	micromolar (uM)
variable	time		double
attribute	time	_CoordinateAxisType	String	Time
attribute	time	actual_range	double	1.45279284E9, 1.54866816E9
attribute	time	axis	String	T
attribute	time	bcodmo_name	String	ISO_DateTime_UTC
attribute	time	description	String	station timestamp (UTC) in ISO 8601 format yyyy-mm-ddTHH:MMZ
attribute	time	ioos_category	String	Time
attribute	time	long_name	String	ISO Date Time UTC
attribute	time	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/DTUT8601/
attribute	time	source_name	String	ISO_DateTime_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	-67.7717, -64.1583
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	station latitude, south is negative
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	-71.2217, -62.7317
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	station longitude, west is negative
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

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.