ERDDAP > info > bcodmo_dataset_748792

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	[Porewater Nitrogen] - Porewater measurements of nitrate and nitrite concentration and N and O isotopic ratios (d15N and d18O) collected from sites 3 and 10 on the North Atlantic Long Core Cruise R/V Knorr KN223 from October to December 2014 (Determining the rates of denitrification, nitrification, and nitrogen fixation using natural abundance isotope profiles in North Atlantic sediments)		F   I   M	background			BCO-DMO	bcodmo_dataset_748792

The Dataset's Variables and Attributes

Row Type	Variable Name	Attribute Name	Data Type	Value
attribute	NC_GLOBAL	access_formats	String	.htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson
attribute	NC_GLOBAL	acquisition_description	String	Samples were collected aboard the R/V Knorr using its long coring system in November of 2014 on cruise KN-223 in the North Atlantic. Samples used in this study came from two sediment coring sites located within 90m of each other at 50\u00b037.25'W, 14\u00b024.05'N, and 4455 m water depth. Porewaters were extracted at approximately 0.5m intervals from two long piston cores (30 and 34 m long) using Rhizon samplers (0.2 mm pore size) and either analyzed shipboard or frozen until analyses were conducted shore side. Nitrate and nitrite concentrations were determined shipboard using ion chromatography with UV detection (D'Hondt et al., 2015). Isotopes were measured in the Wankel lab (Woods Hole Oceanographic Institution) using an Isoprime 100 isotope ratio mass spectrometer coupled to a modified TraceGas prep system similar to that described previously (McIlvin and Casciotti, 2011), which is used to flush, purify and cryogenically trap sample N2O from converted nitrate or nitrite samples. Nitrate isotopic composition was measured using the denitrifier method to convert nitrate to N2O, normalized to international reference materials (USGS 34, USGS 32, and USGS 35) (Sigman et al., 2001; Casciotti et al., 2002). Nitrite isotope measurements were made separately using the azide method for conversion of nitrite to N2O (McIlvin and Altabet, 2005), normalizing to previously calibrated Wankel isotope lab standards (WILIS 10, 11, and 20) (Buchwald et al., 2016). Where co-occurring nitrite concentrations were less than 5 times as high as nitrate, nitrite was removed by addition of sulfamic acid (Granger and Sigman, 2009) prior to the denitrifier method. In the deepest samples having measurable nitrate, where concentrations were very low, the N and O isotopic composition of nitrate was calculated by mass balance using analyses of the combined nitrate + nitrite pools by the denitrifier method, in which both nitrate and nitrite standards were also analyzed, together with nitrite isotope values from the azide-only measurements described previously (Casciotti and McIlvin, 2007).\u00a0 \u00a0\u00a0
attribute	NC_GLOBAL	awards_0_award_nid	String	554980
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-0939564
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward?AWD_ID=0939564
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	567400
attribute	NC_GLOBAL	awards_1_award_number	String	OCE-1433150
attribute	NC_GLOBAL	awards_1_data_url	String	http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1433150
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	Candace O. Major
attribute	NC_GLOBAL	awards_1_program_manager_nid	String	51690
attribute	NC_GLOBAL	awards_2_award_nid	String	748796
attribute	NC_GLOBAL	awards_2_award_number	String	OCE-1537485
attribute	NC_GLOBAL	awards_2_data_url	String	https://www.nsf.gov/awardsearch/showAward?AWD_ID=1537485
attribute	NC_GLOBAL	awards_2_funder_name	String	NSF Division of Ocean Sciences
attribute	NC_GLOBAL	awards_2_funding_acronym	String	NSF OCE
attribute	NC_GLOBAL	awards_2_funding_source_nid	String	355
attribute	NC_GLOBAL	awards_2_program_manager	String	Candace O. Major
attribute	NC_GLOBAL	awards_2_program_manager_nid	String	51690
attribute	NC_GLOBAL	cdm_data_type	String	Other
attribute	NC_GLOBAL	comment	String	Porewater measurements of nitrate and nitrite, and N and O isotopic ratios PI: Carolyn Buchwald Co-PIs: Scott Wankel and Arthur Spivack Version: 1 Version date: 26 October 2018
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	2018-10-25T16:32:37Z
attribute	NC_GLOBAL	date_modified	String	2019-03-15T15:37:11Z
attribute	NC_GLOBAL	defaultDataQuery	String	&time<now
attribute	NC_GLOBAL	doi	String	10.1575/1912/bco-dmo.748792.1
attribute	NC_GLOBAL	Easternmost_Easting	double	-50.6203
attribute	NC_GLOBAL	geospatial_lat_max	double	14.4007
attribute	NC_GLOBAL	geospatial_lat_min	double	14.4
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	-50.6203
attribute	NC_GLOBAL	geospatial_lon_min	double	-50.6207
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/748792
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	instruments_0_acronym	String	IR Mass Spec
attribute	NC_GLOBAL	instruments_0_dataset_instrument_description	String	Isoprime 100 isotope ratio mass spectrometer coupled to a modified TraceGas prep system
attribute	NC_GLOBAL	instruments_0_dataset_instrument_nid	String	748811
attribute	NC_GLOBAL	instruments_0_description	String	The Isotope-ratio Mass Spectrometer is a particular type of mass spectrometer used to measure the relative abundance of isotopes in a given sample (e.g. VG Prism II Isotope Ratio Mass-Spectrometer).
attribute	NC_GLOBAL	instruments_0_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/LAB16/
attribute	NC_GLOBAL	instruments_0_instrument_name	String	Isotope-ratio Mass Spectrometer
attribute	NC_GLOBAL	instruments_0_instrument_nid	String	469
attribute	NC_GLOBAL	instruments_0_supplied_name	String	Isoprime 100 isotope ratio mass spectrometer
attribute	NC_GLOBAL	instruments_1_acronym	String	Piston Corer
attribute	NC_GLOBAL	instruments_1_dataset_instrument_nid	String	748805
attribute	NC_GLOBAL	instruments_1_description	String	The piston corer is a type of bottom sediment sampling device. A long, heavy tube is plunged into the seafloor to extract samples of mud sediment. A piston corer uses a "free fall" of the coring rig to achieve a greater initial force on impact than gravity coring. A sliding piston inside the core barrel reduces inside wall friction with the sediment and helps to evacuate displaced water from the top of the corer. A piston corer is capable of extracting core samples up to 90 feet in length.
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	Piston Corer
attribute	NC_GLOBAL	instruments_1_instrument_nid	String	519
attribute	NC_GLOBAL	instruments_1_supplied_name	String	R/V Knorr long coring system
attribute	NC_GLOBAL	instruments_2_acronym	String	Ion Chromatograph
attribute	NC_GLOBAL	instruments_2_dataset_instrument_nid	String	748810
attribute	NC_GLOBAL	instruments_2_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_2_instrument_name	String	Ion Chromatograph
attribute	NC_GLOBAL	instruments_2_instrument_nid	String	662
attribute	NC_GLOBAL	instruments_2_supplied_name	String	ion chromatography with UV detection
attribute	NC_GLOBAL	instruments_3_dataset_instrument_description	String	Rhizon samplers extract small volumes of pore water from soil and sediments. See: https://www.rhizosphere.com/
attribute	NC_GLOBAL	instruments_3_dataset_instrument_nid	String	748809
attribute	NC_GLOBAL	instruments_3_description	String	A device that collects samples of pore water from various horizons below the seabed.
attribute	NC_GLOBAL	instruments_3_instrument_name	String	Sediment Porewater Sampler
attribute	NC_GLOBAL	instruments_3_instrument_nid	String	748807
attribute	NC_GLOBAL	instruments_3_supplied_name	String	Rhizon samplers
attribute	NC_GLOBAL	keywords	String	ammonia, ammonium, bco, bco-dmo, biological, chemical, chemistry, concentration, d15N_Nitrate, d15N_Nitrite, d18O_Nitrate, d18O_Nitrite, data, dataset, depth, Depth_for_Ammonium, Depth_for_Nitrate_and_Nitrate, Depth_for_Nitrate_isotopes, Depth_for_Nitrite_isotopes, Depth_for_O2, dmo, earth, Earth Science > Oceans > Ocean Chemistry > Ammonia, Earth Science > Oceans > Ocean Chemistry > Nitrate, erddap, latitude, longitude, management, 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, no3, number, O2, ocean, oceanography, oceans, office, oxygen, preliminary, science, sea, seawater, site, Site_Number, water
attribute	NC_GLOBAL	keywords_vocabulary	String	GCMD Science Keywords
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/748792/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/748792
attribute	NC_GLOBAL	Northernmost_Northing	double	14.4007
attribute	NC_GLOBAL	param_mapping	String	{'748792': {'Latitude': 'flag - latitude', 'Depth_for_Ammonium': 'flag - depth', 'Longitude': 'flag - longitude'}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/748792/parameters
attribute	NC_GLOBAL	people_0_affiliation	String	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_0_affiliation_acronym	String	WHOI
attribute	NC_GLOBAL	people_0_person_name	String	Dr Carolyn Buchwald
attribute	NC_GLOBAL	people_0_person_nid	String	637913
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	University of Rhode Island
attribute	NC_GLOBAL	people_1_affiliation_acronym	String	URI-GSO
attribute	NC_GLOBAL	people_1_person_name	String	Dr Arthur J. Spivack
attribute	NC_GLOBAL	people_1_person_nid	String	51425
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
attribute	NC_GLOBAL	people_2_person_name	String	Scott Wankel
attribute	NC_GLOBAL	people_2_person_nid	String	637907
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	Shannon Rauch
attribute	NC_GLOBAL	people_3_person_nid	String	51498
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	North Atlantic Nitrate and Nitrite
attribute	NC_GLOBAL	projects_0_acronym	String	North Atlantic Nitrate and Nitrite
attribute	NC_GLOBAL	projects_0_description	String	Project Abstract: Deep-sea sediments in the oligotrophic ocean host a diverse array of microbes that are involved in multiple processes within the nitrogen cycle. Using measurements of nitrate and nitrite, and their stable isotopes (d15N and d18O) in sedimentary pore fluids, we have been developing approaches for determining the distribution and magnitude of key processes in the oligotrophic sediments of the North Atlantic. While concentration profiles alone indicate the production of nitrate through nitrification in the surface sediments and the reduction of the nitrate deeper in the absence of oxygen, the dual stable isotope profiles of NO3- and NO2- demonstrate clear evidence of further complexity; specifically, that nitrite oxidation occurs deeper in the sediments as well, apparently in the absence of O2. A number of lines of evidence contribute to this refined understanding of the distribution of N cycling processes in these environments, including large differences in the nitrate and nitrite d15N, as well as the evolution of a greater than 1:1 relationship between the d15N and d18O of nitrate. We used a 1D inverse model that predicts the distribution and rates of different oxidative and reductive nitrogen cycling processes throughout these vertical profiles. Our analysis reveals that nitrate reduction and nitrite oxidation co-occur between 0 and 10 meters, and that the ratio of these processes changes in relation to the abundance of porewater oxygen. In the upper profile where dissolved oxygen is more abundant oxidative processes (e.g., nitrite re-oxidation) play an exceptionally large role, as reflected in the very high slope for the evolving relationship between d15N and d18O nitrate. Below the depth of oxygen penetration, while nitrate reduction becomes a substantially more important processes, a clear indication of oxidation remains – as reflected in the large difference between nitrate and nitrite d15N. All rates were predicted to be slow on the order of 0.1 mM per year, which was substantiated by d18O values of nitrite reflecting complete isotopic equilibration with water. This project was funded by a C-DEBI Postdoctoral Fellowship to Carolyn Buchwald (advisor: Scott Wankel).
attribute	NC_GLOBAL	projects_0_end_date	String	2016-05
attribute	NC_GLOBAL	projects_0_geolocation	String	North Pond, North Atlantic
attribute	NC_GLOBAL	projects_0_name	String	Determining the rates of denitrification, nitrification, and nitrogen fixation using natural abundance isotope profiles in North Atlantic sediments
attribute	NC_GLOBAL	projects_0_project_nid	String	748767
attribute	NC_GLOBAL	projects_0_project_website	String	https://www.darkenergybiosphere.org/award/determining-the-rates-of-denitrification-nitrification-and-nitrogen-fixation-using-natural-abundance-isotope-profiles-in-north-pond-sediments/
attribute	NC_GLOBAL	projects_0_start_date	String	2014-06
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	14.4
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	summary	String	Porewater measurements of nitrate and nitrite concentration and N and O isotopic ratios (d15N and d18O) collected from sites 3 and 10 on the North Atlantic Long Core Cruise R/V Knorr KN223 from October to December 2014.
attribute	NC_GLOBAL	title	String	[Porewater Nitrogen] - Porewater measurements of nitrate and nitrite concentration and N and O isotopic ratios (d15N and d18O) collected from sites 3 and 10 on the North Atlantic Long Core Cruise R/V Knorr KN223 from October to December 2014 (Determining the rates of denitrification, nitrification, and nitrogen fixation using natural abundance isotope profiles in North Atlantic sediments)
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	Westernmost_Easting	double	-50.6207
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.3
variable	Site_Number		byte
attribute	Site_Number	_FillValue	byte	127
attribute	Site_Number	actual_range	byte	3, 10
attribute	Site_Number	bcodmo_name	String	site
attribute	Site_Number	colorBarMaximum	double	100.0
attribute	Site_Number	colorBarMinimum	double	0.0
attribute	Site_Number	description	String	Site number where samples were collected
attribute	Site_Number	long_name	String	Site Number
attribute	Site_Number	units	String	unitless
variable	latitude		double
attribute	latitude	_CoordinateAxisType	String	Lat
attribute	latitude	_FillValue	double	NaN
attribute	latitude	actual_range	double	14.4, 14.4007
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 of site; North = positive values
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	-50.6207, -50.6203
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 of site; East = positive values
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_for_O2		float
attribute	Depth_for_O2	_FillValue	float	NaN
attribute	Depth_for_O2	actual_range	float	0.0, 31.81
attribute	Depth_for_O2	bcodmo_name	String	depth_bsf
attribute	Depth_for_O2	colorBarMaximum	double	8000.0
attribute	Depth_for_O2	colorBarMinimum	double	-8000.0
attribute	Depth_for_O2	colorBarPalette	String	TopographyDepth
attribute	Depth_for_O2	description	String	Depth of sample for oxygen (O2) measurement
attribute	Depth_for_O2	long_name	String	Depth
attribute	Depth_for_O2	standard_name	String	depth
attribute	Depth_for_O2	units	String	meters below seafloor (mbsf)
variable	Oxygen		float
attribute	Oxygen	_FillValue	float	NaN
attribute	Oxygen	actual_range	float	0.0, 283.4
attribute	Oxygen	bcodmo_name	String	dissolved Oxygen
attribute	Oxygen	description	String	Oxygen concentration
attribute	Oxygen	long_name	String	Oxygen
attribute	Oxygen	units	String	micromolar (uM)
variable	Depth_for_Nitrate_and_Nitrate		float
attribute	Depth_for_Nitrate_and_Nitrate	_FillValue	float	NaN
attribute	Depth_for_Nitrate_and_Nitrate	actual_range	float	0.02, 32.07
attribute	Depth_for_Nitrate_and_Nitrate	bcodmo_name	String	depth_bsf
attribute	Depth_for_Nitrate_and_Nitrate	colorBarMaximum	double	8000.0
attribute	Depth_for_Nitrate_and_Nitrate	colorBarMinimum	double	-8000.0
attribute	Depth_for_Nitrate_and_Nitrate	colorBarPalette	String	TopographyDepth
attribute	Depth_for_Nitrate_and_Nitrate	description	String	Depth of sample for nitrate and nitrite measurements
attribute	Depth_for_Nitrate_and_Nitrate	long_name	String	Depth
attribute	Depth_for_Nitrate_and_Nitrate	standard_name	String	depth
attribute	Depth_for_Nitrate_and_Nitrate	units	String	meters below seafloor (mbsf)
variable	Nitrate		float
attribute	Nitrate	_FillValue	float	NaN
attribute	Nitrate	actual_range	float	0.0, 40.6
attribute	Nitrate	bcodmo_name	String	NO3
attribute	Nitrate	colorBarMaximum	double	50.0
attribute	Nitrate	colorBarMinimum	double	0.0
attribute	Nitrate	description	String	Nitrate concentration
attribute	Nitrate	long_name	String	Mole Concentration Of Nitrate In Sea Water
attribute	Nitrate	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/NTRAIGGS/
attribute	Nitrate	units	String	micromolar (uM)
variable	Nitrite		float
attribute	Nitrite	_FillValue	float	NaN
attribute	Nitrite	actual_range	float	0.0, 19.86
attribute	Nitrite	bcodmo_name	String	NO2
attribute	Nitrite	colorBarMaximum	double	1.0
attribute	Nitrite	colorBarMinimum	double	0.0
attribute	Nitrite	description	String	Nitrite concentration
attribute	Nitrite	long_name	String	Mole Concentration Of Nitrite In Sea Water
attribute	Nitrite	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/NTRIAAZX/
attribute	Nitrite	units	String	micromolar (uM)
variable	Depth_for_Nitrite_isotopes		float
attribute	Depth_for_Nitrite_isotopes	_FillValue	float	NaN
attribute	Depth_for_Nitrite_isotopes	actual_range	float	4.2, 20.34
attribute	Depth_for_Nitrite_isotopes	bcodmo_name	String	depth_bsf
attribute	Depth_for_Nitrite_isotopes	colorBarMaximum	double	8000.0
attribute	Depth_for_Nitrite_isotopes	colorBarMinimum	double	-8000.0
attribute	Depth_for_Nitrite_isotopes	colorBarPalette	String	TopographyDepth
attribute	Depth_for_Nitrite_isotopes	description	String	Depth of sample for nitrite isotope measurements
attribute	Depth_for_Nitrite_isotopes	long_name	String	Depth
attribute	Depth_for_Nitrite_isotopes	standard_name	String	depth
attribute	Depth_for_Nitrite_isotopes	units	String	meters below seafloor (mbsf)
variable	d15N_Nitrite		float
attribute	d15N_Nitrite	_FillValue	float	NaN
attribute	d15N_Nitrite	actual_range	float	-27.41, 38.23
attribute	d15N_Nitrite	bcodmo_name	String	NO2
attribute	d15N_Nitrite	colorBarMaximum	double	1.0
attribute	d15N_Nitrite	colorBarMinimum	double	0.0
attribute	d15N_Nitrite	description	String	d15N nitrite
attribute	d15N_Nitrite	long_name	String	Mole Concentration Of Nitrite In Sea Water
attribute	d15N_Nitrite	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/NTRIAAZX/
attribute	d15N_Nitrite	units	String	per mil (‰)
variable	d18O_Nitrite		float
attribute	d18O_Nitrite	_FillValue	float	NaN
attribute	d18O_Nitrite	actual_range	float	14.55, 17.03
attribute	d18O_Nitrite	bcodmo_name	String	NO2
attribute	d18O_Nitrite	colorBarMaximum	double	1.0
attribute	d18O_Nitrite	colorBarMinimum	double	0.0
attribute	d18O_Nitrite	description	String	d18O nitrite
attribute	d18O_Nitrite	long_name	String	Mole Concentration Of Nitrite In Sea Water
attribute	d18O_Nitrite	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/NTRIAAZX/
attribute	d18O_Nitrite	units	String	per mil (‰)
variable	Depth_for_Nitrate_isotopes		float
attribute	Depth_for_Nitrate_isotopes	_FillValue	float	NaN
attribute	Depth_for_Nitrate_isotopes	actual_range	float	0.02, 9.55
attribute	Depth_for_Nitrate_isotopes	bcodmo_name	String	depth_bsf
attribute	Depth_for_Nitrate_isotopes	colorBarMaximum	double	8000.0
attribute	Depth_for_Nitrate_isotopes	colorBarMinimum	double	-8000.0
attribute	Depth_for_Nitrate_isotopes	colorBarPalette	String	TopographyDepth
attribute	Depth_for_Nitrate_isotopes	description	String	Depth of sample for nitrate isotope measurements
attribute	Depth_for_Nitrate_isotopes	long_name	String	Depth
attribute	Depth_for_Nitrate_isotopes	standard_name	String	depth
attribute	Depth_for_Nitrate_isotopes	units	String	meters below seafloor (mbsf)
variable	d15N_Nitrate		float
attribute	d15N_Nitrate	_FillValue	float	NaN
attribute	d15N_Nitrate	actual_range	float	3.86, 49.3
attribute	d15N_Nitrate	bcodmo_name	String	dN15_NO3
attribute	d15N_Nitrate	colorBarMaximum	double	50.0
attribute	d15N_Nitrate	colorBarMinimum	double	0.0
attribute	d15N_Nitrate	description	String	d15N nitrate
attribute	d15N_Nitrate	long_name	String	Mole Concentration Of Nitrate In Sea Water
attribute	d15N_Nitrate	units	String	per mil (‰)
variable	d18O_Nitrate		float
attribute	d18O_Nitrate	_FillValue	float	NaN
attribute	d18O_Nitrate	actual_range	float	2.48, 34.7
attribute	d18O_Nitrate	bcodmo_name	String	d18O_NO3
attribute	d18O_Nitrate	colorBarMaximum	double	50.0
attribute	d18O_Nitrate	colorBarMinimum	double	0.0
attribute	d18O_Nitrate	description	String	d18O nitrate
attribute	d18O_Nitrate	long_name	String	Mole Concentration Of Nitrate In Sea Water
attribute	d18O_Nitrate	units	String	per mil (‰)
variable	Depth_for_Ammonium		double
attribute	Depth_for_Ammonium	_FillValue	double	NaN
attribute	Depth_for_Ammonium	actual_range	double	0.02, 28.48
attribute	Depth_for_Ammonium	bcodmo_name	String	depth_bsf
attribute	Depth_for_Ammonium	colorBarMaximum	double	8000.0
attribute	Depth_for_Ammonium	colorBarMinimum	double	-8000.0
attribute	Depth_for_Ammonium	colorBarPalette	String	TopographyDepth
attribute	Depth_for_Ammonium	description	String	Depth of sample for ammonium measurements
attribute	Depth_for_Ammonium	long_name	String	Depth
attribute	Depth_for_Ammonium	standard_name	String	depth
attribute	Depth_for_Ammonium	units	String	meters below seafloor (mbsf)
variable	Ammonium		float
attribute	Ammonium	_FillValue	float	NaN
attribute	Ammonium	actual_range	float	0.5, 3.2
attribute	Ammonium	bcodmo_name	String	Ammonium
attribute	Ammonium	colorBarMaximum	double	5.0
attribute	Ammonium	colorBarMinimum	double	0.0
attribute	Ammonium	description	String	Ammonium concentration
attribute	Ammonium	long_name	String	Mole Concentration Of Ammonium In Sea Water
attribute	Ammonium	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/AMONAAZX/
attribute	Ammonium	units	String	micromolar (uM)

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.