ERDDAP > info > bcodmo_dataset_713003

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
	set	data	graph		files	public	[GP16 Water Mass Percentages] - Results from Optimum Multiparameter Water Mass Analysis (OMPA) obtained using temperature, salinity, nutrient, and oxygen data from R/V Thomas G. Thompson cruise TN303 in the Eastern Tropical Pacific from October to December 2013 (U.S. GEOTRACES East Pacific Zonal Transect)		F   I   M	background			BCO-DMO	bcodmo_dataset_713003

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	We use the Optimum Multiparameter Analysis (OMPA) method to determine water mass percentages along the GP16 transect. This involves the use of hydrographic measurements from GP16 (temperature, salinity, oxygen, and nutrients), which can be found in a separate BCO-DMO dataset (see [CTD - ODF Bottle](\\"https://www.bco-dmo.org/dataset/503145\\")). For samples having potential density anomalies greater than 27 kg m-3, the OMPA was conducted according to the procedure outlined by Tomczak (1981), Tomczak and Large (1989), and others. For samples in the thermocline, defined as those samples having densities between 26 and 27, we use the 'thermocline array' method to determine the water mass fractions, according to the procedure outlined by Jenkins et al. (2015). Samples having densities less than 26 kg m-3 were not included in the water mass analysis. The uncertainty in water mass percentage is calculated using a Monte Carlo routine, where the defined properties of each water mass are varied to encompass the reported range of properties in that water mass. Lastly, the signal to noise ratio is calculated by dividing the percentage of given water mass in a each sample by the uncertainty of that water mass.
attribute	NC_GLOBAL	awards_0_award_nid	String	502594
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-1130870
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward?AWD_ID=1130870&HistoricalAwards=false
attribute	NC_GLOBAL	awards_0_funder_name	String	NSF Division of Ocean Sciences
attribute	NC_GLOBAL	awards_0_funding_acronym	String	NSF OCE
attribute	NC_GLOBAL	awards_0_funding_source_nid	String	355
attribute	NC_GLOBAL	awards_0_program_manager	String	Henrietta N Edmonds
attribute	NC_GLOBAL	awards_0_program_manager_nid	String	51517
attribute	NC_GLOBAL	awards_1_award_nid	String	650089
attribute	NC_GLOBAL	awards_1_award_number	String	OCE-1233339
attribute	NC_GLOBAL	awards_1_data_url	String	http://www.nsf.gov/awardsearch/showAward?AWD_ID=1233339
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	Henrietta N Edmonds
attribute	NC_GLOBAL	awards_1_program_manager_nid	String	51517
attribute	NC_GLOBAL	awards_2_award_nid	String	663603
attribute	NC_GLOBAL	awards_2_award_number	String	OCE-1232991
attribute	NC_GLOBAL	awards_2_data_url	String	http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1232991
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	Henrietta N Edmonds
attribute	NC_GLOBAL	awards_2_program_manager_nid	String	51517
attribute	NC_GLOBAL	awards_3_award_nid	String	713011
attribute	NC_GLOBAL	awards_3_award_number	String	OCE-1130245
attribute	NC_GLOBAL	awards_3_data_url	String	https://www.nsf.gov/awardsearch/showAward?AWD_ID=1130245
attribute	NC_GLOBAL	awards_3_funder_name	String	NSF Division of Ocean Sciences
attribute	NC_GLOBAL	awards_3_funding_acronym	String	NSF OCE
attribute	NC_GLOBAL	awards_3_funding_source_nid	String	355
attribute	NC_GLOBAL	awards_3_program_manager	String	Henrietta N Edmonds
attribute	NC_GLOBAL	awards_3_program_manager_nid	String	51517
attribute	NC_GLOBAL	awards_4_award_nid	String	713016
attribute	NC_GLOBAL	awards_4_award_number	String	OCE-1233028
attribute	NC_GLOBAL	awards_4_data_url	String	https://www.nsf.gov/awardsearch/showAward?AWD_ID=1233028
attribute	NC_GLOBAL	awards_4_funder_name	String	NSF Division of Ocean Sciences
attribute	NC_GLOBAL	awards_4_funding_acronym	String	NSF OCE
attribute	NC_GLOBAL	awards_4_funding_source_nid	String	355
attribute	NC_GLOBAL	awards_4_program_manager	String	Henrietta N Edmonds
attribute	NC_GLOBAL	awards_4_program_manager_nid	String	51517
attribute	NC_GLOBAL	cdm_data_type	String	Other
attribute	NC_GLOBAL	comment	String	Water Mass Percentages for GP16 PI: Karen Casciotti (Stanford University) Co-PIs: William Jenkins (WHOI), James Swift (UCSD), Christopher German (WHOI), James Moffett (USC), Gregory Cutter (ODU), & Mark Brzezinski (UCSB) Version: 17 August 2017
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	2017-08-17T19:24:02Z
attribute	NC_GLOBAL	date_modified	String	2020-07-23T15:27:29Z
attribute	NC_GLOBAL	defaultDataQuery	String	&time<now
attribute	NC_GLOBAL	doi	String	10.26008/1912/bco-dmo.713003.1
attribute	NC_GLOBAL	Easternmost_Easting	double	-77.38
attribute	NC_GLOBAL	geospatial_lat_max	double	-10.25
attribute	NC_GLOBAL	geospatial_lat_min	double	-16.0
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	-77.38
attribute	NC_GLOBAL	geospatial_lon_min	double	-152.0
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	geospatial_vertical_max	double	5505.2
attribute	NC_GLOBAL	geospatial_vertical_min	double	15.1
attribute	NC_GLOBAL	geospatial_vertical_positive	String	down
attribute	NC_GLOBAL	geospatial_vertical_units	String	m
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/713003
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	instruments_0_acronym	String	Niskin bottle
attribute	NC_GLOBAL	instruments_0_dataset_instrument_nid	String	714095
attribute	NC_GLOBAL	instruments_0_description	String	A Niskin bottle (a next generation water sampler based on the Nansen bottle) is a cylindrical, non-metallic water collection device with stoppers at both ends. The bottles can be attached individually on a hydrowire or deployed in 12, 24, or 36 bottle Rosette systems mounted on a frame and combined with a CTD. Niskin bottles are used to collect discrete water samples for a range of measurements including pigments, nutrients, plankton, etc.
attribute	NC_GLOBAL	instruments_0_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L22/current/TOOL0412/
attribute	NC_GLOBAL	instruments_0_instrument_name	String	Niskin bottle
attribute	NC_GLOBAL	instruments_0_instrument_nid	String	413
attribute	NC_GLOBAL	instruments_1_acronym	String	CTD SBE 911plus
attribute	NC_GLOBAL	instruments_1_dataset_instrument_nid	String	714094
attribute	NC_GLOBAL	instruments_1_description	String	The Sea-Bird SBE 911plus is a type of CTD instrument package for continuous measurement of conductivity, temperature and pressure. The SBE 911plus includes the SBE 9plus Underwater Unit and the SBE 11plus Deck Unit (for real-time readout using conductive wire) for deployment from a vessel. The combination of the SBE 9plus and SBE 11plus is called a SBE 911plus. The SBE 9plus uses Sea-Bird's standard modular temperature and conductivity sensors (SBE 3plus and SBE 4). The SBE 9plus CTD can be configured with up to eight auxiliary sensors to measure other parameters including dissolved oxygen, pH, turbidity, fluorescence, light (PAR), light transmission, etc.). more information from Sea-Bird Electronics
attribute	NC_GLOBAL	instruments_1_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L22/current/TOOL0058/
attribute	NC_GLOBAL	instruments_1_instrument_name	String	CTD Sea-Bird SBE 911plus
attribute	NC_GLOBAL	instruments_1_instrument_nid	String	591
attribute	NC_GLOBAL	keywords	String	aabw, AABW_PCT, AABW_STN, AABW_UNCT, aaiw, AAIW_PCT, AAIW_STN, AAIW_UNCT, bco, bco-dmo, biological, btl, BTL_LAT, BTL_LON, btlnbr, BTLNBR_FLAG_W, castno, chemical, cruise, cruise_id, ctddepth, ctdprs, data, dataset, datetime, dmo, eqpiw, EQPIW_PCT, EQPIW_STN, EQPIW_UNCT, erddap, espiw, ESPIW_PCT, ESPIW_STN, ESPIW_UNCT, essw, ESSW_PCT, ESSW_STN, ESSW_UNCT, eventno, flag, geotrc, GEOTRC_EVENTNO, GEOTRC_INSTR, GEOTRC_SAMPNO, instr, iso, latitude, lcdw, LCDW_PCT, LCDW_STN, LCDW_UNCT, longitude, management, oceanography, office, pct, pdw, PDW_PCT, PDW_STN, PDW_UNCT, preliminary, sampno, spcw, SPCW_PCT, SPCW_STN, SPCW_UNCT, stn, stnnbr, time, total, ucdw, UCDW_PCT, UCDW_STN, UCDW_UNCT, unct, w
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/713003/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/713003
attribute	NC_GLOBAL	Northernmost_Northing	double	-10.25
attribute	NC_GLOBAL	param_mapping	String	{'713003': {'BTL_ISO_DATETIME_UTC': 'flag - time', 'LONGITUDE': 'flag - longitude', 'CTDDEPTH': 'flag - depth', 'LATITUDE': 'flag - latitude'}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/713003/parameters
attribute	NC_GLOBAL	people_0_affiliation	String	Stanford University
attribute	NC_GLOBAL	people_0_person_name	String	Karen L. Casciotti
attribute	NC_GLOBAL	people_0_person_nid	String	50980
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 California-Santa Barbara
attribute	NC_GLOBAL	people_1_affiliation_acronym	String	UCSB
attribute	NC_GLOBAL	people_1_person_name	String	Mark A. Brzezinski
attribute	NC_GLOBAL	people_1_person_nid	String	50663
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	Gregory Cutter
attribute	NC_GLOBAL	people_2_person_nid	String	50679
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
attribute	NC_GLOBAL	people_3_person_name	String	Christopher R. German
attribute	NC_GLOBAL	people_3_person_nid	String	51700
attribute	NC_GLOBAL	people_3_role	String	Co-Principal Investigator
attribute	NC_GLOBAL	people_3_role_type	String	originator
attribute	NC_GLOBAL	people_4_affiliation	String	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_4_affiliation_acronym	String	WHOI
attribute	NC_GLOBAL	people_4_person_name	String	William J. Jenkins
attribute	NC_GLOBAL	people_4_person_nid	String	50745
attribute	NC_GLOBAL	people_4_role	String	Co-Principal Investigator
attribute	NC_GLOBAL	people_4_role_type	String	originator
attribute	NC_GLOBAL	people_5_affiliation	String	University of Southern California
attribute	NC_GLOBAL	people_5_affiliation_acronym	String	USC
attribute	NC_GLOBAL	people_5_person_name	String	James W. Moffett
attribute	NC_GLOBAL	people_5_person_nid	String	50800
attribute	NC_GLOBAL	people_5_role	String	Co-Principal Investigator
attribute	NC_GLOBAL	people_5_role_type	String	originator
attribute	NC_GLOBAL	people_6_affiliation	String	University of California-San Diego
attribute	NC_GLOBAL	people_6_affiliation_acronym	String	UCSD-SIO
attribute	NC_GLOBAL	people_6_person_name	String	James H. Swift
attribute	NC_GLOBAL	people_6_person_nid	String	50861
attribute	NC_GLOBAL	people_6_role	String	Co-Principal Investigator
attribute	NC_GLOBAL	people_6_role_type	String	originator
attribute	NC_GLOBAL	people_7_affiliation	String	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_7_affiliation_acronym	String	WHOI BCO-DMO
attribute	NC_GLOBAL	people_7_person_name	String	Shannon Rauch
attribute	NC_GLOBAL	people_7_person_nid	String	51498
attribute	NC_GLOBAL	people_7_role	String	BCO-DMO Data Manager
attribute	NC_GLOBAL	people_7_role_type	String	related
attribute	NC_GLOBAL	project	String	U.S. GEOTRACES EPZT,EPZT Nitrogen Isotopes,EPZT Noble Gases He Tritium
attribute	NC_GLOBAL	projects_0_acronym	String	U.S. GEOTRACES EPZT
attribute	NC_GLOBAL	projects_0_description	String	From the NSF Award Abstract The mission of the International GEOTRACES Program (www.geotraces.org), of which the U.S. chemical oceanography research community is a founding member, is "to identify processes and quantify fluxes that control the distributions of key trace elements and isotopes in the ocean, and to establish the sensitivity of these distributions to changing environmental conditions" (GEOTRACES Science Plan, 2006). In the United States, ocean chemists are currently in the process of organizing a zonal transect in the eastern tropical South Pacific (ETSP) from Peru to Tahiti as the second cruise of the U.S.GEOTRACES Program. This Pacific section includes a large area characterized by high rates of primary production and particle export in the eastern boundary associated with the Peru Upwelling, a large oxygen minimum zone that is a major global sink for fixed nitrogen, and a large hydrothermal plume arising from the East Pacific Rise. This particular section was selected as a result of open planning workshops in 2007 and 2008, with a final recommendation made by the U.S.GEOTRACES Steering Committee in 2009. It is the first part of a two-stage plan that will include a meridional section of the Pacific from Tahiti to Alaska as a subsequent expedition. This award provides funding for management of the U.S.GEOTRACES Pacific campaign to a team of scientists from the University of Southern California, Old Dominion University, and the Woods Hole Oceanographic Institution. The three co-leaders will provide mission leadership, essential support services, and management structure for acquiring the trace elements and isotopes samples listed as core parameters in the International GEOTRACES Science Plan, plus hydrographic and nutrient data needed by participating investigators. With this support from NSF, the management team will (1) plan and coordinate the 52-day Pacific research cruise described above; (2) obtain representative samples for a wide variety of trace metals of interest using conventional CTD/rosette and GEOTRACES Sampling Systems; (3) acquire conventional JGOFS/WOCE-quality hydrographic data (CTD, transmissometer, fluorometer, oxygen sensor, etc) along with discrete samples for salinity, dissolved oxygen (to 1 uM detection limits), plant pigments, redox tracers such as ammonium and nitrite, and dissolved nutrients at micro- and nanomolar levels; (4) ensure that proper QA/QC protocols are followed and reported, as well as fulfilling all GEOTRACES Intercalibration protocols; (5) prepare and deliver all hydrographic-type data to the GEOTRACES Data Center (and US data centers); and (6) coordinate cruise communications between all participating investigators, including preparation of a hydrographic report/publication. Broader Impacts: The project is part of an international collaborative program that has forged strong partnerships in the intercalibration and implementation phases that are unprecedented in chemical oceanography. The science product of these collective missions will enhance our ability to understand how to interpret the chemical composition of the ocean, and interpret how climate change will affect ocean chemistry. Partnerships include contributions to the infrastructure of developing nations with overlapping interests in the study area, in this case Peru. There is a strong educational component to the program, with many Ph.D. students carrying out thesis research within the program. Figure 1. The 2013 GEOTRACES EPZT Cruise Track. [click on the image to view a larger version]
attribute	NC_GLOBAL	projects_0_end_date	String	2015-06
attribute	NC_GLOBAL	projects_0_geolocation	String	Eastern Tropical Pacific - Transect from Peru to Tahiti
attribute	NC_GLOBAL	projects_0_name	String	U.S. GEOTRACES East Pacific Zonal Transect
attribute	NC_GLOBAL	projects_0_project_nid	String	499723
attribute	NC_GLOBAL	projects_0_project_website	String	https://www.geotraces.org/
attribute	NC_GLOBAL	projects_0_start_date	String	2012-06
attribute	NC_GLOBAL	projects_1_acronym	String	EPZT Nitrogen Isotopes
attribute	NC_GLOBAL	projects_1_description	String	Description from NSF award abstract: Nitrogen (N) is an essential macronutrient whose availability can limit primary production and the capacity of the biological pump to export carbon from the surface ocean on seasonal, annual, decadal, and millennial timescales. The inventory of fixed (bioavailable) N in the ocean is driven by biological processes such as nitrogen fixation, denitrification, and anaerobic ammonia oxidation (anammox). Water column oxygen deficient zones (ODZs) are important sites for fixed N loss, as well as N2O production, and they are projected to expand and intensify in the coming years as global warming increases ocean stratification and decreases ventilation. It is important to understand the distribution of nitrate, nitrite, and N2O isotopes in relation to current ocean conditions of oxygen and trace element availability order to interpret past and future changes in nitrate signals. In this project, a team of researchers from Stanford University, University of Massachusetts at Dartmouth, and Brown University will measure the nitrogen- and oxygen-isotopic composition (del15N and del18O) of nitrate, nitrite, and nitrous oxide in seawater samples collected along the GEOTRACES Pacific Peru-Tahiti Section. Values of del15N and del18O will also be measured in nitrate from aerosol and rain samples to inform our interpretation of the N isotope budget and isotopic gradients within the tropical South Pacific. Finally, N2/Ar and N2 del15N will be determined to close the N mass and isotope budgets. Nitrate del15N is a GEOTRACES "core parameter" that will complement other measurements, such as bioactive trace element concentrations and speciation, Si isotope variations, as well as redox and productivity proxies. The GEOTRACES Peru-Tahiti section provides a rare opportunity to track the fate of the isotopic signals of N loss from one of the largest water column ODZs. Furthermore, little is known about the effect of N recycling through hydrothermal vents on nitrate isotopes in the deep ocean, and this section will allow quantitative tracking of this input. Together, these measurements will yield insight into the relative rates of modern N cycle processes and will provide background information for paleoceanographic applications.
attribute	NC_GLOBAL	projects_1_end_date	String	2017-02
attribute	NC_GLOBAL	projects_1_geolocation	String	East Pacific Zonal Transect
attribute	NC_GLOBAL	projects_1_name	String	GEOTRACES Peru-Tahiti Nitrogen Isotope Measurements
attribute	NC_GLOBAL	projects_1_project_nid	String	650090
attribute	NC_GLOBAL	projects_1_start_date	String	2013-03
attribute	NC_GLOBAL	projects_2_acronym	String	EPZT Noble Gases He Tritium
attribute	NC_GLOBAL	projects_2_description	String	The biogeochemical cycling of trace elements and isotopes (TEIs) in the marine environment is an important research area within the context of global change that motivates the International GEOTRACES program. Some trace elements are known to play potentially important roles as micronutrients in biological cycling, particularly in regard to enzymatic and catalytic processes in the marine environment. Radioisotopes, transient tracers, and noble gases are valuable tracers of these and related processes, and of the ocean?s interaction with the atmosphere and the solid earth, which in turn play a role in shaping many trace element distributions within the ocean. According to the GEOTRACES Science Plan, the guiding mission of the GEOTRACES program is "to identify processes and quantify fluxes that control the distributions of key trace elements and isotopes in the ocean". The key observational strategy for GEOTRACES is an internationally-coordinated global-scale ocean survey of key TEIs. The second US GEOTRACES section, set for the Eastern South Pacific in 2013, is aimed at the characterization of key processes in an oxygen minimum zone (OMZ), as well as a major abyssal hydrothermal plume extending westward from the East Pacific Rise. To help achieve these goals, with support from this grant, a research team at the Woods Hole Oceanographic Institution will collaborate with other GEOTRACES investigators on the Eastern South Pacific expedition to measure a suite of tracers useful for interpreting the rest of the synoptic TEI data. Specifically, the team will make measurements of the noble gases, helium isotopes, tritium, and radiocarbon include in order to: (1) quantify ventilation, circulation, and diapycnal mixing in the OMZ to enable estimation of fluxes and transformation rates of key TEIs; (2) determine upwelling rates in the oxygen minimum zone (OMZ) over a range of timescales to constrain the fluxes of biogeochemically important properties; (3) estimate hydrothermal fluxes of key TEIs using 3He as a flux gauge, and also use 3He as a measure of downstream dilution in the hydrothermal plume; (4) use radiocarbon to estimate abyssal remineralization rates for key TEIs; and (5) probe for evidence of off-axis contribution of hydrothermal processes to TEI distribution. The collective effort will allow marine geochemists to understand mechanistically and quantitatively how a variety of physical, chemical, and biological processes join to determine the distribtuion of TEIs in the ocean. It has been argued that anthropogenic influence on the global cycles of many elements is emerging as significant. As outlined in the International GEOTRACES Science Plan, the broader impacts of this activity include both an important "baseline snapshot" of the biogeochemical state of the oceanic environment, and a quantitative improvement in the characterization and understanding of important processes in the marine environment. Both of these build a foundation for improved models and quantitative predictions of the oceanic response and role in global change and climate, particularly with anthropogenic forcing. For example, recent evidence of "ocean deoxygenation" has profound implications for marine biologic response. In particular, the evolving state of marine OMZs represents an important biogeochemical "climate canary". A key benefit of diagnosing trace metal dynamics and response to changing redox conditions is the improvement in prognostic capabilities of coupled ocean-atmosphere biogeochemical models for global change.
attribute	NC_GLOBAL	projects_2_end_date	String	2016-12
attribute	NC_GLOBAL	projects_2_geolocation	String	Oxygen minium zone; East Pacific Rise
attribute	NC_GLOBAL	projects_2_name	String	Measurement of Helium Isotopes, Tritium, Noble Gases, and Radiocarbon
attribute	NC_GLOBAL	projects_2_project_nid	String	663604
attribute	NC_GLOBAL	projects_2_start_date	String	2013-01
attribute	NC_GLOBAL	publisher_name	String	Biological and Chemical Oceanographic Data Management Office (BCO-DMO)
attribute	NC_GLOBAL	publisher_type	String	institution
attribute	NC_GLOBAL	sourceUrl	String	(local files)
attribute	NC_GLOBAL	Southernmost_Northing	double	-16.0
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	subsetVariables	String	cruise_id,GEOTRC_INSTR
attribute	NC_GLOBAL	summary	String	Results from Optimum Multiparameter Water Mass Analysis (OMPA) obtained using temperature, salinity, nutrient, and oxygen data from R/V Thomas G. Thompson cruise TN303 in the Eastern Tropical Pacific from October to December 2013.
attribute	NC_GLOBAL	time_coverage_end	String	2013-12-18T04:49:00.00Z
attribute	NC_GLOBAL	time_coverage_start	String	2013-10-29T01:56:00.00Z
attribute	NC_GLOBAL	title	String	[GP16 Water Mass Percentages] - Results from Optimum Multiparameter Water Mass Analysis (OMPA) obtained using temperature, salinity, nutrient, and oxygen data from R/V Thomas G. Thompson cruise TN303 in the Eastern Tropical Pacific from October to December 2013 (U.S. GEOTRACES East Pacific Zonal Transect)
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	Westernmost_Easting	double	-152.0
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.5
variable	cruise_id		String
attribute	cruise_id	bcodmo_name	String	cruise_id
attribute	cruise_id	description	String	Cruise identification
attribute	cruise_id	long_name	String	Cruise Id
attribute	cruise_id	units	String	unitless
variable	GEOTRC_INSTR		String
attribute	GEOTRC_INSTR	bcodmo_name	String	instrument
attribute	GEOTRC_INSTR	description	String	Sampling instrument; added from BCO-DMO EPZT master data file
attribute	GEOTRC_INSTR	long_name	String	GEOTRC INSTR
attribute	GEOTRC_INSTR	units	String	unitless
variable	STNNBR		byte
attribute	STNNBR	_FillValue	byte	127
attribute	STNNBR	actual_range	byte	1, 36
attribute	STNNBR	bcodmo_name	String	station
attribute	STNNBR	description	String	Station number
attribute	STNNBR	long_name	String	STNNBR
attribute	STNNBR	units	String	unitless
variable	latitude		double
attribute	latitude	_CoordinateAxisType	String	Lat
attribute	latitude	_FillValue	double	NaN
attribute	latitude	actual_range	double	-16.0, -10.25
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	-152.0, -77.38
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
variable	GEOTRC_SAMPNO		short
attribute	GEOTRC_SAMPNO	_FillValue	short	32767
attribute	GEOTRC_SAMPNO	actual_range	short	2071, 10454
attribute	GEOTRC_SAMPNO	bcodmo_name	String	sample
attribute	GEOTRC_SAMPNO	description	String	Unique GEOTRACES sample number
attribute	GEOTRC_SAMPNO	long_name	String	GEOTRC SAMPNO
attribute	GEOTRC_SAMPNO	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P02/current/ACYC/
attribute	GEOTRC_SAMPNO	units	String	unitless
variable	GEOTRC_EVENTNO		short
attribute	GEOTRC_EVENTNO	_FillValue	short	32767
attribute	GEOTRC_EVENTNO	actual_range	short	4012, 4474
attribute	GEOTRC_EVENTNO	bcodmo_name	String	event
attribute	GEOTRC_EVENTNO	description	String	GEOTRACES event number; added from BCO-DMO EPZT master data file
attribute	GEOTRC_EVENTNO	long_name	String	GEOTRC EVENTNO
attribute	GEOTRC_EVENTNO	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/EVTAGFL/
attribute	GEOTRC_EVENTNO	units	String	unitless
variable	CASTNO		byte
attribute	CASTNO	_FillValue	byte	127
attribute	CASTNO	actual_range	byte	1, 17
attribute	CASTNO	bcodmo_name	String	cast
attribute	CASTNO	description	String	Cast number; added from BCO-DMO EPZT master data file
attribute	CASTNO	long_name	String	CASTNO
attribute	CASTNO	units	String	unitless
variable	CTDPRS		float
attribute	CTDPRS	_FillValue	float	NaN
attribute	CTDPRS	actual_range	float	15.2, 5609.2
attribute	CTDPRS	bcodmo_name	String	pressure
attribute	CTDPRS	description	String	CTD pressure; added from BCO-DMO EPZT master data file
attribute	CTDPRS	long_name	String	CTDPRS
attribute	CTDPRS	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/PRESPR01/
attribute	CTDPRS	units	String	decibars (db)
variable	depth		double
attribute	depth	_CoordinateAxisType	String	Height
attribute	depth	_CoordinateZisPositive	String	down
attribute	depth	_FillValue	double	NaN
attribute	depth	actual_range	double	15.1, 5505.2
attribute	depth	axis	String	Z
attribute	depth	bcodmo_name	String	depth
attribute	depth	description	String	CTD bottle firing depth; added from BCO-DMO EPZT master data file
attribute	depth	ioos_category	String	Location
attribute	depth	long_name	String	CTDDEPTH
attribute	depth	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/DEPH/
attribute	depth	positive	String	down
attribute	depth	standard_name	String	depth
attribute	depth	units	String	m
variable	SAMPNO		byte
attribute	SAMPNO	_FillValue	byte	127
attribute	SAMPNO	actual_range	byte	1, 12
attribute	SAMPNO	bcodmo_name	String	bottle
attribute	SAMPNO	description	String	Sequential sample number within the cast (usually corresponds to bottle number); added from BCO-DMO EPZT master data file
attribute	SAMPNO	long_name	String	SAMPNO
attribute	SAMPNO	units	String	unitless
variable	BTLNBR		String
attribute	BTLNBR	bcodmo_name	String	bottle
attribute	BTLNBR	description	String	Bottle number; typically 1-24; added from BCO-DMO EPZT master data file
attribute	BTLNBR	long_name	String	BTLNBR
attribute	BTLNBR	units	String	unitless
variable	BTLNBR_FLAG_W		byte
attribute	BTLNBR_FLAG_W	_FillValue	byte	127
attribute	BTLNBR_FLAG_W	actual_range	byte	2, 4
attribute	BTLNBR_FLAG_W	bcodmo_name	String	flag
attribute	BTLNBR_FLAG_W	colorBarMaximum	double	150.0
attribute	BTLNBR_FLAG_W	colorBarMinimum	double	0.0
attribute	BTLNBR_FLAG_W	description	String	Bottle number quality flag; follows WOCE conventions. 2 = no problems noted; 3 = leaking; 4 = did not trip correctly; 9 = samples not drawn from this bottle. Added from BCO-DMO EPZT master data file
attribute	BTLNBR_FLAG_W	long_name	String	BTLNBR FLAG W
attribute	BTLNBR_FLAG_W	units	String	unitless
variable	time		double
attribute	time	_CoordinateAxisType	String	Time
attribute	time	actual_range	double	1.38301176E9, 1.38734214E9
attribute	time	axis	String	T
attribute	time	bcodmo_name	String	ISO_DateTime_UTC
attribute	time	description	String	Date and time, formatted to the ISO 8601 standard, at the time of bottle firing. Format: YYYY-MM-DDTHH:MM:SS[.xx]Z
attribute	time	ioos_category	String	Time
attribute	time	long_name	String	BTL ISO DATETIME UTC
attribute	time	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/DTUT8601/
attribute	time	source_name	String	BTL_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	1970-01-01T00:00:00.00Z
attribute	time	units	String	seconds since 1970-01-01T00:00:00Z
variable	BTL_LAT		float
attribute	BTL_LAT	_FillValue	float	NaN
attribute	BTL_LAT	actual_range	float	-16.0006, -10.25
attribute	BTL_LAT	bcodmo_name	String	latitude
attribute	BTL_LAT	description	String	Latitude of bottle firing; north is positive. Added from BCO-DMO EPZT master data file
attribute	BTL_LAT	long_name	String	BTL LAT
attribute	BTL_LAT	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/LATX/
attribute	BTL_LAT	units	String	decimal degrees
variable	BTL_LON		float
attribute	BTL_LON	_FillValue	float	NaN
attribute	BTL_LON	actual_range	float	-152.0006, -77.3761
attribute	BTL_LON	bcodmo_name	String	longitude
attribute	BTL_LON	description	String	Lonitude of bottle firing; east is positive. Added from BCO-DMO EPZT master data file
attribute	BTL_LON	long_name	String	BTL LON
attribute	BTL_LON	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/LONX/
attribute	BTL_LON	units	String	decimal degrees
variable	ESSW_PCT		float
attribute	ESSW_PCT	_FillValue	float	NaN
attribute	ESSW_PCT	actual_range	float	0.0, 160.6
attribute	ESSW_PCT	bcodmo_name	String	unknown
attribute	ESSW_PCT	description	String	the amount of Equatorial Subsurface Water in a sample, in units of percent
attribute	ESSW_PCT	long_name	String	ESSW PCT
attribute	ESSW_PCT	units	String	percent (%)
variable	ESSW_UNCT		float
attribute	ESSW_UNCT	_FillValue	float	NaN
attribute	ESSW_UNCT	actual_range	float	0.0, 64.7
attribute	ESSW_UNCT	bcodmo_name	String	unknown
attribute	ESSW_UNCT	description	String	the uncertainty in the percent of Equatorial Subsurface Water, in units of percent
attribute	ESSW_UNCT	long_name	String	ESSW UNCT
attribute	ESSW_UNCT	units	String	percent (%)
variable	ESSW_STN		float
attribute	ESSW_STN	_FillValue	float	NaN
attribute	ESSW_STN	actual_range	float	0.0, 7.9
attribute	ESSW_STN	bcodmo_name	String	unknown
attribute	ESSW_STN	description	String	the signal to noise ratio for Equatorial Subsurface Water
attribute	ESSW_STN	long_name	String	ESSW STN
attribute	ESSW_STN	units	String	dimensionless
variable	ESPIW_PCT		float
attribute	ESPIW_PCT	_FillValue	float	NaN
attribute	ESPIW_PCT	actual_range	float	0.0, 61.9
attribute	ESPIW_PCT	bcodmo_name	String	unknown
attribute	ESPIW_PCT	description	String	the amount of Eastern South Pacific Intermediate Water, in units of percent
attribute	ESPIW_PCT	long_name	String	ESPIW PCT
attribute	ESPIW_PCT	units	String	percent (%)
variable	ESPIW_UNCT		float
attribute	ESPIW_UNCT	_FillValue	float	NaN
attribute	ESPIW_UNCT	actual_range	float	0.0, 35.1
attribute	ESPIW_UNCT	bcodmo_name	String	unknown
attribute	ESPIW_UNCT	description	String	the uncertainty of Eastern South Pacific Intermediate Water, in units of percent
attribute	ESPIW_UNCT	long_name	String	ESPIW UNCT
attribute	ESPIW_UNCT	units	String	percent (%)
variable	ESPIW_STN		float
attribute	ESPIW_STN	_FillValue	float	NaN
attribute	ESPIW_STN	actual_range	float	0.0, 4.2
attribute	ESPIW_STN	bcodmo_name	String	unknown
attribute	ESPIW_STN	description	String	the signal to noise ratio of Eastern South Pacific Intermediate Water
attribute	ESPIW_STN	long_name	String	ESPIW STN
attribute	ESPIW_STN	units	String	dimensionless
variable	SPCW_PCT		float
attribute	SPCW_PCT	_FillValue	float	NaN
attribute	SPCW_PCT	actual_range	float	0.0, 60.7
attribute	SPCW_PCT	bcodmo_name	String	unknown
attribute	SPCW_PCT	description	String	the amount of South Pacific Central Water in a sample, in units of percent
attribute	SPCW_PCT	long_name	String	SPCW PCT
attribute	SPCW_PCT	units	String	percent (%)
variable	SPCW_UNCT		float
attribute	SPCW_UNCT	_FillValue	float	NaN
attribute	SPCW_UNCT	actual_range	float	0.0, 29.0
attribute	SPCW_UNCT	bcodmo_name	String	unknown
attribute	SPCW_UNCT	description	String	the uncertainty in South Pacific Central Water, in units of percent
attribute	SPCW_UNCT	long_name	String	SPCW UNCT
attribute	SPCW_UNCT	units	String	percent (%)
variable	SPCW_STN		float
attribute	SPCW_STN	_FillValue	float	NaN
attribute	SPCW_STN	actual_range	float	0.0, 3.4
attribute	SPCW_STN	bcodmo_name	String	unknown
attribute	SPCW_STN	description	String	the signal to nose ratio of South Pacific Central Water
attribute	SPCW_STN	long_name	String	SPCW STN
attribute	SPCW_STN	units	String	dimensionless
variable	AAIW_PCT		float
attribute	AAIW_PCT	_FillValue	float	NaN
attribute	AAIW_PCT	actual_range	float	0.0, 53.0
attribute	AAIW_PCT	bcodmo_name	String	unknown
attribute	AAIW_PCT	description	String	the amount of Antarctic Intermediate Water in a sample, in units of percent
attribute	AAIW_PCT	long_name	String	AAIW PCT
attribute	AAIW_PCT	units	String	percent (%)
variable	AAIW_UNCT		float
attribute	AAIW_UNCT	_FillValue	float	NaN
attribute	AAIW_UNCT	actual_range	float	0.0, 22.3
attribute	AAIW_UNCT	bcodmo_name	String	unknown
attribute	AAIW_UNCT	description	String	the uncertainty of Antarctic Intermediate Water, in units of percent
attribute	AAIW_UNCT	long_name	String	AAIW UNCT
attribute	AAIW_UNCT	units	String	percent (%)
variable	AAIW_STN		float
attribute	AAIW_STN	_FillValue	float	NaN
attribute	AAIW_STN	actual_range	float	0.0, 2.7
attribute	AAIW_STN	bcodmo_name	String	unknown
attribute	AAIW_STN	description	String	the signal to noise ratio of Antarctic Intermediate Water
attribute	AAIW_STN	long_name	String	AAIW STN
attribute	AAIW_STN	units	String	dimensionless
variable	EQPIW_PCT		float
attribute	EQPIW_PCT	_FillValue	float	NaN
attribute	EQPIW_PCT	actual_range	float	0.0, 113.8
attribute	EQPIW_PCT	bcodmo_name	String	unknown
attribute	EQPIW_PCT	description	String	the amount of Equatorial Pacific Intermediate Water in a sample, in units of percent
attribute	EQPIW_PCT	long_name	String	EQPIW PCT
attribute	EQPIW_PCT	units	String	percent (%)
variable	EQPIW_UNCT		float
attribute	EQPIW_UNCT	_FillValue	float	NaN
attribute	EQPIW_UNCT	actual_range	float	0.0, 23.4
attribute	EQPIW_UNCT	bcodmo_name	String	unknown
attribute	EQPIW_UNCT	description	String	the uncertainty in Equatorial Pacific Intermediate Water, in units of percent
attribute	EQPIW_UNCT	long_name	String	EQPIW UNCT
attribute	EQPIW_UNCT	units	String	percent (%)
variable	EQPIW_STN		float
attribute	EQPIW_STN	_FillValue	float	NaN
attribute	EQPIW_STN	actual_range	float	0.0, 4.9
attribute	EQPIW_STN	bcodmo_name	String	unknown
attribute	EQPIW_STN	description	String	the signal to noise ratio of Equatorial Pacific Intermediate Water
attribute	EQPIW_STN	long_name	String	EQPIW STN
attribute	EQPIW_STN	units	String	dimensionless
variable	UCDW_PCT		float
attribute	UCDW_PCT	_FillValue	float	NaN
attribute	UCDW_PCT	actual_range	float	0.0, 48.1
attribute	UCDW_PCT	bcodmo_name	String	unknown
attribute	UCDW_PCT	description	String	the amount of Upper Circumpolar Deep Water in a sample, in units of percent
attribute	UCDW_PCT	long_name	String	UCDW PCT
attribute	UCDW_PCT	units	String	percent (%)
variable	UCDW_UNCT		float
attribute	UCDW_UNCT	_FillValue	float	NaN
attribute	UCDW_UNCT	actual_range	float	0.0, 25.5
attribute	UCDW_UNCT	bcodmo_name	String	unknown
attribute	UCDW_UNCT	description	String	the uncertainty of Upper Circumpolar Deep Water, in units of percent
attribute	UCDW_UNCT	long_name	String	UCDW UNCT
attribute	UCDW_UNCT	units	String	percent (%)
variable	UCDW_STN		float
attribute	UCDW_STN	_FillValue	float	NaN
attribute	UCDW_STN	actual_range	float	0.0, 2.2
attribute	UCDW_STN	bcodmo_name	String	unknown
attribute	UCDW_STN	description	String	the signal to noise ratio of Upper Circumpolar Deep Water
attribute	UCDW_STN	long_name	String	UCDW STN
attribute	UCDW_STN	units	String	dimensionless
variable	PDW_PCT		float
attribute	PDW_PCT	_FillValue	float	NaN
attribute	PDW_PCT	actual_range	float	0.0, 82.0
attribute	PDW_PCT	bcodmo_name	String	unknown
attribute	PDW_PCT	description	String	the amount of Pacific Deep Water in a sample, in units of percent
attribute	PDW_PCT	long_name	String	PDW PCT
attribute	PDW_PCT	units	String	percent (%)
variable	PDW_UNCT		float
attribute	PDW_UNCT	_FillValue	float	NaN
attribute	PDW_UNCT	actual_range	float	0.0, 27.6
attribute	PDW_UNCT	bcodmo_name	String	unknown
attribute	PDW_UNCT	description	String	the uncertainty of Pacific Deep Water, in units of percent
attribute	PDW_UNCT	long_name	String	PDW UNCT
attribute	PDW_UNCT	units	String	percent (%)
variable	PDW_STN		float
attribute	PDW_STN	_FillValue	float	NaN
attribute	PDW_STN	actual_range	float	0.0, 4.6
attribute	PDW_STN	bcodmo_name	String	unknown
attribute	PDW_STN	description	String	the signal to noise ratio in Pacific Deep Water
attribute	PDW_STN	long_name	String	PDW STN
attribute	PDW_STN	units	String	dimensionless
variable	LCDW_PCT		float
attribute	LCDW_PCT	_FillValue	float	NaN
attribute	LCDW_PCT	actual_range	float	0.0, 47.7
attribute	LCDW_PCT	bcodmo_name	String	unknown
attribute	LCDW_PCT	description	String	the amount of Lower Circumpolar Deep Water in a sample, in units of percent
attribute	LCDW_PCT	long_name	String	LCDW PCT
attribute	LCDW_PCT	units	String	percent (%)
variable	LCDW_UNCT		float
attribute	LCDW_UNCT	_FillValue	float	NaN
attribute	LCDW_UNCT	actual_range	float	0.0, 27.5
attribute	LCDW_UNCT	bcodmo_name	String	unknown
attribute	LCDW_UNCT	description	String	the uncertainty of Lower Circumpolar Deep Water, in units of percent
attribute	LCDW_UNCT	long_name	String	LCDW UNCT
attribute	LCDW_UNCT	units	String	percent (%)
variable	LCDW_STN		float
attribute	LCDW_STN	_FillValue	float	NaN
attribute	LCDW_STN	actual_range	float	0.0, 1.9
attribute	LCDW_STN	bcodmo_name	String	unknown
attribute	LCDW_STN	description	String	the signal to noise ratio in Lowe Circumpolar Deep Water
attribute	LCDW_STN	long_name	String	LCDW STN
attribute	LCDW_STN	units	String	dimensionless
variable	AABW_PCT		float
attribute	AABW_PCT	_FillValue	float	NaN
attribute	AABW_PCT	actual_range	float	0.0, 52.4
attribute	AABW_PCT	bcodmo_name	String	unknown
attribute	AABW_PCT	description	String	the amount of Antarctic Bottom Water in a sample, in units of percent
attribute	AABW_PCT	long_name	String	AABW PCT
attribute	AABW_PCT	units	String	percent (%)
variable	AABW_UNCT		float
attribute	AABW_UNCT	_FillValue	float	NaN
attribute	AABW_UNCT	actual_range	float	0.0, 25.3
attribute	AABW_UNCT	bcodmo_name	String	unknown
attribute	AABW_UNCT	description	String	the uncertainty of Antarctic Bottom Water, in units of percent
attribute	AABW_UNCT	long_name	String	AABW UNCT
attribute	AABW_UNCT	units	String	percent (%)
variable	AABW_STN		float
attribute	AABW_STN	_FillValue	float	NaN
attribute	AABW_STN	actual_range	float	0.0, 2.1
attribute	AABW_STN	bcodmo_name	String	unknown
attribute	AABW_STN	description	String	the signal to noise ratio in Antarctic Bottom Water
attribute	AABW_STN	long_name	String	AABW STN
attribute	AABW_STN	units	String	dimensionless
variable	total		float
attribute	total	_FillValue	float	NaN
attribute	total	actual_range	float	100.0, 190.9
attribute	total	bcodmo_name	String	unknown
attribute	total	description	String	Sum of percentages for the sample
attribute	total	long_name	String	Total
attribute	total	units	String	percent (%)

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.