BCO-DMO | ERDDAP - bcodmo_dataset_522822

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	Methodology\\u00a0(extracted from the\\u00a0TN303 cruise report): \n Salinity and nutrient samples were taken from the surface fish and from\nNiskins attached to the wire at each Deep and Mid McLane pump cast.\n \nNutrient analyses (phosphate, silicate, nitrate+nitrite, nitrite) were\nperformed on a Seal Analytical continuous-flow AutoAnalyzer 3 (AA3). The\nanalytical methods used are described by Gordon et al., Hager et al., and\nAtlas et al.\n \nSilicate:\\u00a0Silicate was analyzed using the technique of Kirkwood et\nal.\\u00a0An acidic solution of ammonium molybdate was added to a seawater\nsample to produce silicomolybdic acid, which was then reduced to a\nsilicomolybdenum blue complex following the addition of ascorbic acid. Oxalic\nacid was also added to impede PO4 color development. The sample was passed\nthrough a flowcell and the absorbance measured at 660nm.\n \nNitrate + Nitrite:\\u00a0A modification of Armstrong et al. procedure was used\nfor the analysis of nitrate and nitrite. For the nitrate analysis, the\nseawater sample was passed through a cadmium reduction column where nitrate\nwas quantitatively reduced to nitrite. Sulfanilamide was introduced to the\nsample stream followed by N-(1-naphthyl)ethylenediamine dihydrochloride which\ncoupled to form a red azo dye. The stream was then passed through a flowcell\nand the absorbance measured at 520nm. The same technique was employed for\nnitrite analysis, except the cadmium column was not present.\n \nPhosphate:\\u00a0Phosphate was analyzed using the Murphy and Riley technique.\nAn acidic solution of ammonium molybdate and antimony potassium tartrate was\nadded to the sample to produce phosphomolybdic acid, then reduced to\nphosphomolybdous acid (a blue compound) following the addition of ascorbic\nacid. The reaction product was heated to ~37 degrees C to enhance color\ndevelopment, then passed through a flowcell and the absorbance measured at\n880nm.\n \nSalinity:\\u00a0A single Guildline Autosal 8400B salinometer (S/N 69-180)\nlocated in the hydro lab was used for all salinity measurements. Samples were\nanalyzed after they had equilibrated to laboratory temperature, usually within\n12-29 hours after collection. The salinometer was standardized for each group\nof analyses, 36 to 72 samples, using two fresh vials of standard seawater per\ngroup.Normal standardization procedures included flushing the cell at least 2\ntimes with a fresh vial of IAPSO Standard Seawater (SSW, Batch P-155), setting\nthe flow rate as low as possible during the last fill, and monitoring the STD\ndial setting. Samples were run using 2 flushes before the final fill. The\ncomputer determined the stability of a measurement and prompted for additional\nreadings if there appeared to be drift. Salinity samples were drawn into 200\nml Kimax high-alumina borosilicate bottles, which were rinsed three times with\nthe sample prior to filling. The bottles were sealed with custom-made plastic\ninsert thimbles and kept closed with Nalgene screw caps.\\u00a0PSS-78 salinity\n[UNES81] was calculated for each sample from the measured conductivity ratios.\nThe difference between the initial vial of standard water and the next one run\nas an unknown was applied as a linear function of elapsed run time to the\nmeasured ratios. The corrected salinity data were then incorporated into the\ncruise database. Data processing included double checking that the station,\nsample and box number had been correctly assigned, and reviewing the data and\nlog files for operator comments. The salinity data were compared to CTD\nsalinities and were used for shipboard sensor calibration.
attribute	NC_GLOBAL	awards_0_award_nid	String	502593
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-1235248
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward?AWD_ID=1235248&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	Donald L. Rice
attribute	NC_GLOBAL	awards_0_program_manager_nid	String	51467
attribute	NC_GLOBAL	awards_1_award_nid	String	502594
attribute	NC_GLOBAL	awards_1_award_number	String	OCE-1130870
attribute	NC_GLOBAL	awards_1_data_url	String	http://www.nsf.gov/awardsearch/showAward?AWD_ID=1130870&HistoricalAwards=false
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	cdm_data_type	String	Other
attribute	NC_GLOBAL	comment	String	GEOTRACES EPZT GT13 TN303 \n Surface FISH Nutrients and Salinities (for each station)\t\t\t\t\t\t\t\t\t\t\t\t\t \n PIs: Moffett, et al \n Version: 30 October 2014 \n \n (Nutrient values are reported in umol/L units; Salinity is PSS-78)
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	2014-08-13T15:34:46Z
attribute	NC_GLOBAL	date_modified	String	2020-04-16T20:28:41Z
attribute	NC_GLOBAL	defaultDataQuery	String	&time<now
attribute	NC_GLOBAL	doi	String	10.26008/1912/bco-dmo.522822.1
attribute	NC_GLOBAL	Easternmost_Easting	double	-77.4525
attribute	NC_GLOBAL	geospatial_lat_max	double	-10.21911
attribute	NC_GLOBAL	geospatial_lat_min	double	-15.99569
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	-77.4525
attribute	NC_GLOBAL	geospatial_lon_min	double	-152.11975
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/522822
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	instruments_0_acronym	String	GeoFish
attribute	NC_GLOBAL	instruments_0_dataset_instrument_nid	String	682725
attribute	NC_GLOBAL	instruments_0_description	String	The GeoFish towed sampler is a custom designed near surface (
attribute	NC_GLOBAL	instruments_0_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/31/
attribute	NC_GLOBAL	instruments_0_instrument_name	String	GeoFish Towed near-Surface Sampler
attribute	NC_GLOBAL	instruments_0_instrument_nid	String	549
attribute	NC_GLOBAL	keywords	String	bco, bco-dmo, biological, chemical, chemistry, concentration, data, dataset, date, datetime, density, dmo, earth, Earth Science > Oceans > Ocean Chemistry > Nitrate, Earth Science > Oceans > Ocean Chemistry > Phosphate, Earth Science > Oceans > Salinity/Density > Salinity, erddap, eventno, expocode, geotrc, GEOTRC_EVENTNO, GEOTRC_SAMPNO, iso, latitude, longitude, management, mass, mass_concentration_of_phosphate_in_sea_water, mole, mole_concentration_of_nitrate_in_sea_water, mole_concentration_of_nitrite_in_sea_water, n02, nitrate, nitrite, NO2, no3, ocean, oceanography, oceans, office, phosphate, po4, practical, preliminary, salinity, sampno, science, sea, sea_water_practical_salinity, seawater, sect, SECT_ID, sil, station, time, time2, water
attribute	NC_GLOBAL	keywords_vocabulary	String	GCMD Science Keywords
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/522822/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/522822
attribute	NC_GLOBAL	Northernmost_Northing	double	-10.21911
attribute	NC_GLOBAL	param_mapping	String	{'522822': {'LATITUDE': 'flag - latitude', 'ISO_DATETIME': 'flag - time', 'LONGITUDE': 'flag - longitude'}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/522822/parameters
attribute	NC_GLOBAL	people_0_affiliation	String	University of Southern California
attribute	NC_GLOBAL	people_0_affiliation_acronym	String	USC-HIMS
attribute	NC_GLOBAL	people_0_person_name	String	James W. Moffett
attribute	NC_GLOBAL	people_0_person_nid	String	50800
attribute	NC_GLOBAL	people_0_role	String	Lead Principal Investigator
attribute	NC_GLOBAL	people_0_role_type	String	originator
attribute	NC_GLOBAL	people_1_affiliation	String	Old Dominion University
attribute	NC_GLOBAL	people_1_affiliation_acronym	String	ODU
attribute	NC_GLOBAL	people_1_person_name	String	Gregory Cutter
attribute	NC_GLOBAL	people_1_person_nid	String	50679
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	Christopher R. German
attribute	NC_GLOBAL	people_2_person_nid	String	51700
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	University of Southern California
attribute	NC_GLOBAL	people_3_affiliation_acronym	String	USC-HIMS
attribute	NC_GLOBAL	people_3_person_name	String	James W. Moffett
attribute	NC_GLOBAL	people_3_person_nid	String	50800
attribute	NC_GLOBAL	people_3_role	String	Contact
attribute	NC_GLOBAL	people_3_role_type	String	related
attribute	NC_GLOBAL	people_4_affiliation	String	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_4_affiliation_acronym	String	WHOI BCO-DMO
attribute	NC_GLOBAL	people_4_person_name	String	Stephen R. Gegg
attribute	NC_GLOBAL	people_4_person_nid	String	50910
attribute	NC_GLOBAL	people_4_role	String	BCO-DMO Data Manager
attribute	NC_GLOBAL	people_4_role_type	String	related
attribute	NC_GLOBAL	project	String	U.S. GEOTRACES EPZT
attribute	NC_GLOBAL	projects_0_acronym	String	U.S. GEOTRACES EPZT
attribute	NC_GLOBAL	projects_0_description	String	From the NSF Award Abstract\nThe 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.\nThis 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.\nBroader 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.\nFigure 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	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	-15.99569
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	subsetVariables	String	EXPOCODE,SECT_ID
attribute	NC_GLOBAL	summary	String	GeoFish nutrients and salts along the US GEOTRACES East Pacific Zonal Transect from the R/V Thomas G. Thompson TN303 cruise in the tropical Pacific from Peru to Tahiti during 2013.
attribute	NC_GLOBAL	time_coverage_end	String	2012-12-30T16:49:00.00Z
attribute	NC_GLOBAL	time_coverage_start	String	2012-12-01T08:06:00.00Z
attribute	NC_GLOBAL	title	String	[GP16 GeoFish - Nuts and Sals] - GeoFish nutrients and salts along the US GEOTRACES East Pacific Zonal Transect from the R/V Thomas G. Thompson TN303 cruise in the tropical Pacific from Peru to Tahiti during 2013 (U.S. GEOTRACES EPZT project) (U.S. GEOTRACES East Pacific Zonal Transect)
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	Westernmost_Easting	double	-152.11975
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.3
variable	EXPOCODE		String
attribute	EXPOCODE	bcodmo_name	String	Cruise Name
attribute	EXPOCODE	description	String	expedition code assigned by the CCHDO: NODCShipCodeYearMonthDay
attribute	EXPOCODE	long_name	String	EXPOCODE
attribute	EXPOCODE	units	String	text
variable	SECT_ID		String
attribute	SECT_ID	bcodmo_name	String	Cruise Name
attribute	SECT_ID	description	String	cruise section identification number
attribute	SECT_ID	long_name	String	SECT ID
attribute	SECT_ID	units	String	text
variable	GEOTRC_EVENTNO		short
attribute	GEOTRC_EVENTNO	_FillValue	short	32767
attribute	GEOTRC_EVENTNO	actual_range	short	4014, 4464
attribute	GEOTRC_EVENTNO	bcodmo_name	String	event
attribute	GEOTRC_EVENTNO	description	String	GEOTRACES Event Number
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	dimensionless
variable	Station		String
attribute	Station	bcodmo_name	String	station
attribute	Station	description	String	Station Number
attribute	Station	long_name	String	Station
attribute	Station	units	String	dimensionless
variable	GEOTRC_SAMPNO		short
attribute	GEOTRC_SAMPNO	_FillValue	short	32767
attribute	GEOTRC_SAMPNO	actual_range	short	2091, 10339
attribute	GEOTRC_SAMPNO	bcodmo_name	String	sample
attribute	GEOTRC_SAMPNO	description	String	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	dimensionless
variable	DATE		int
attribute	DATE	_FillValue	int	2147483647
attribute	DATE	actual_range	int	20131029, 20131216
attribute	DATE	bcodmo_name	String	date
attribute	DATE	description	String	Station Date (GMT) in the format YYYYMMDD
attribute	DATE	long_name	String	DATE
attribute	DATE	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/
attribute	DATE	units	String	unitless
variable	time2		String
attribute	time2	bcodmo_name	String	time
attribute	time2	description	String	Station Time (GMT)
attribute	time2	long_name	String	TIME
attribute	time2	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/AHMSAA01/
attribute	time2	units	String	HHMM
variable	time		double
attribute	time	_CoordinateAxisType	String	Time
attribute	time	actual_range	double	1.35434916E9, 1.35688614E9
attribute	time	axis	String	T
attribute	time	bcodmo_name	String	ISO_DateTime_UTC
attribute	time	description	String	Date/Time (ISO formatted)
attribute	time	ioos_category	String	Time
attribute	time	long_name	String	ISO DATETIME
attribute	time	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/DTUT8601/
attribute	time	source_name	String	ISO_DATETIME
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	latitude		double
attribute	latitude	_CoordinateAxisType	String	Lat
attribute	latitude	_FillValue	double	NaN
attribute	latitude	actual_range	double	-15.99569, -10.21911
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	-152.11975, -77.4525
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	NO3		float
attribute	NO3	_FillValue	float	NaN
attribute	NO3	actual_range	float	-999.0, 15.26
attribute	NO3	bcodmo_name	String	NO3
attribute	NO3	colorBarMaximum	double	50.0
attribute	NO3	colorBarMinimum	double	0.0
attribute	NO3	description	String	NO3
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	umol/L
variable	PO4		float
attribute	PO4	_FillValue	float	NaN
attribute	PO4	actual_range	float	-999.0, 1.55
attribute	PO4	bcodmo_name	String	PO4
attribute	PO4	description	String	PO4
attribute	PO4	long_name	String	Mass Concentration Of Phosphate In Sea Water
attribute	PO4	units	String	umol/L
variable	SIL		float
attribute	SIL	_FillValue	float	NaN
attribute	SIL	actual_range	float	-999.0, 7.5
attribute	SIL	bcodmo_name	String	SiO4
attribute	SIL	description	String	SILICATE
attribute	SIL	long_name	String	SIL
attribute	SIL	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/SLCAAAZX/
attribute	SIL	units	String	umol/L
variable	NO2		float
attribute	NO2	_FillValue	float	NaN
attribute	NO2	actual_range	float	-999.0, 0.61
attribute	NO2	bcodmo_name	String	NO2
attribute	NO2	colorBarMaximum	double	1.0
attribute	NO2	colorBarMinimum	double	0.0
attribute	NO2	description	String	NO2
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	umol/L
variable	Salinity		float
attribute	Salinity	_FillValue	float	NaN
attribute	Salinity	actual_range	float	34.95933, 36.1253
attribute	Salinity	bcodmo_name	String	sal_bottle
attribute	Salinity	colorBarMaximum	double	37.0
attribute	Salinity	colorBarMinimum	double	32.0
attribute	Salinity	description	String	Salinity
attribute	Salinity	long_name	String	Sea Water Practical Salinity
attribute	Salinity	units	String	PSS-78

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

Methodology\\u00a0(extracted from the\\u00a0TN303 cruise report): \n Salinity and nutrient samples were taken from the surface fish and from\nNiskins attached to the wire at each Deep and Mid McLane pump cast.\n \nNutrient analyses (phosphate, silicate, nitrate+nitrite, nitrite) were\nperformed on a Seal Analytical continuous-flow AutoAnalyzer 3 (AA3). The\nanalytical methods used are described by Gordon et al., Hager et al., and\nAtlas et al.\n \nSilicate:\\u00a0Silicate was analyzed using the technique of Kirkwood et\nal.\\u00a0An acidic solution of ammonium molybdate was added to a seawater\nsample to produce silicomolybdic acid, which was then reduced to a\nsilicomolybdenum blue complex following the addition of ascorbic acid. Oxalic\nacid was also added to impede PO4 color development. The sample was passed\nthrough a flowcell and the absorbance measured at 660nm.\n \nNitrate + Nitrite:\\u00a0A modification of Armstrong et al. procedure was used\nfor the analysis of nitrate and nitrite. For the nitrate analysis, the\nseawater sample was passed through a cadmium reduction column where nitrate\nwas quantitatively reduced to nitrite. Sulfanilamide was introduced to the\nsample stream followed by N-(1-naphthyl)ethylenediamine dihydrochloride which\ncoupled to form a red azo dye. The stream was then passed through a flowcell\nand the absorbance measured at 520nm. The same technique was employed for\nnitrite analysis, except the cadmium column was not present.\n \nPhosphate:\\u00a0Phosphate was analyzed using the Murphy and Riley technique.\nAn acidic solution of ammonium molybdate and antimony potassium tartrate was\nadded to the sample to produce phosphomolybdic acid, then reduced to\nphosphomolybdous acid (a blue compound) following the addition of ascorbic\nacid. The reaction product was heated to ~37 degrees C to enhance color\ndevelopment, then passed through a flowcell and the absorbance measured at\n880nm.\n \nSalinity:\\u00a0A single Guildline Autosal 8400B salinometer (S/N 69-180)\nlocated in the hydro lab was used for all salinity measurements. Samples were\nanalyzed after they had equilibrated to laboratory temperature, usually within\n12-29 hours after collection. The salinometer was standardized for each group\nof analyses, 36 to 72 samples, using two fresh vials of standard seawater per\ngroup.Normal standardization procedures included flushing the cell at least 2\ntimes with a fresh vial of IAPSO Standard Seawater (SSW, Batch P-155), setting\nthe flow rate as low as possible during the last fill, and monitoring the STD\ndial setting. Samples were run using 2 flushes before the final fill. The\ncomputer determined the stability of a measurement and prompted for additional\nreadings if there appeared to be drift. Salinity samples were drawn into 200\nml Kimax high-alumina borosilicate bottles, which were rinsed three times with\nthe sample prior to filling. The bottles were sealed with custom-made plastic\ninsert thimbles and kept closed with Nalgene screw caps.\\u00a0PSS-78 salinity\n[UNES81] was calculated for each sample from the measured conductivity ratios.\nThe difference between the initial vial of standard water and the next one run\nas an unknown was applied as a linear function of elapsed run time to the\nmeasured ratios. The corrected salinity data were then incorporated into the\ncruise database. Data processing included double checking that the station,\nsample and box number had been correctly assigned, and reviewing the data and\nlog files for operator comments. The salinity data were compared to CTD\nsalinities and were used for shipboard sensor calibration.

attribute

NC_GLOBAL

awards_0_award_nid

String

502593

attribute

NC_GLOBAL

awards_0_award_number

String

OCE-1235248

attribute

NC_GLOBAL

awards_0_data_url

String

http://www.nsf.gov/awardsearch/showAward?AWD_ID=1235248&HistoricalAwards=false (external link)

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

Donald L. Rice

attribute

NC_GLOBAL

awards_0_program_manager_nid

String

51467

attribute

NC_GLOBAL

awards_1_award_nid

String

502594

attribute

NC_GLOBAL

awards_1_award_number

String

OCE-1130870

attribute

NC_GLOBAL

awards_1_data_url

String

http://www.nsf.gov/awardsearch/showAward?AWD_ID=1130870&HistoricalAwards=false (external link)

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

cdm_data_type

String

Other

attribute

NC_GLOBAL

comment

String

GEOTRACES EPZT GT13 TN303 \n Surface FISH Nutrients and Salinities (for each station)\t\t\t\t\t\t\t\t\t\t\t\t\t \n PIs: Moffett, et al \n Version: 30 October 2014 \n \n (Nutrient values are reported in umol/L units; Salinity is PSS-78)

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/ (external link)

attribute

NC_GLOBAL

data_source

String

extract_data_as_tsv version 2.3 19 Dec 2019

attribute

NC_GLOBAL

date_created

String

2014-08-13T15:34:46Z

attribute

NC_GLOBAL

date_modified

String

2020-04-16T20:28:41Z

attribute

NC_GLOBAL

defaultDataQuery

String

&time<now

attribute

NC_GLOBAL

doi

String

10.26008/1912/bco-dmo.522822.1

attribute

NC_GLOBAL

Easternmost_Easting

double

-77.4525

attribute

NC_GLOBAL

geospatial_lat_max

double

-10.21911

attribute

NC_GLOBAL

geospatial_lat_min

double

-15.99569

attribute

NC_GLOBAL

geospatial_lat_units

String

degrees_north

attribute

NC_GLOBAL

geospatial_lon_max

double

-77.4525

attribute

NC_GLOBAL

geospatial_lon_min

double

-152.11975

attribute

NC_GLOBAL

geospatial_lon_units

String

degrees_east

attribute

NC_GLOBAL

infoUrl

String

https://www.bco-dmo.org/dataset/522822 (external link)

attribute

NC_GLOBAL

institution

String

BCO-DMO

attribute

NC_GLOBAL

instruments_0_acronym

String

GeoFish

attribute

NC_GLOBAL

instruments_0_dataset_instrument_nid

String

682725

attribute

NC_GLOBAL

instruments_0_description

String

The GeoFish towed sampler is a custom designed near surface (

attribute

NC_GLOBAL

instruments_0_instrument_external_identifier

String

https://vocab.nerc.ac.uk/collection/L05/current/31/ (external link)

attribute

NC_GLOBAL

instruments_0_instrument_name

String

GeoFish Towed near-Surface Sampler

attribute

NC_GLOBAL

instruments_0_instrument_nid

String

549

attribute

NC_GLOBAL

keywords

String

bco, bco-dmo, biological, chemical, chemistry, concentration, data, dataset, date, datetime, density, dmo, earth, Earth Science > Oceans > Ocean Chemistry > Nitrate, Earth Science > Oceans > Ocean Chemistry > Phosphate, Earth Science > Oceans > Salinity/Density > Salinity, erddap, eventno, expocode, geotrc, GEOTRC_EVENTNO, GEOTRC_SAMPNO, iso, latitude, longitude, management, mass, mass_concentration_of_phosphate_in_sea_water, mole, mole_concentration_of_nitrate_in_sea_water, mole_concentration_of_nitrite_in_sea_water, n02, nitrate, nitrite, NO2, no3, ocean, oceanography, oceans, office, phosphate, po4, practical, preliminary, salinity, sampno, science, sea, sea_water_practical_salinity, seawater, sect, SECT_ID, sil, station, time, time2, water

attribute

NC_GLOBAL

keywords_vocabulary

String

GCMD Science Keywords

attribute

NC_GLOBAL

license

String

https://www.bco-dmo.org/dataset/522822/license (external link)

attribute

NC_GLOBAL

metadata_source

String

https://www.bco-dmo.org/api/dataset/522822 (external link)

attribute

NC_GLOBAL

Northernmost_Northing

double

-10.21911

attribute

NC_GLOBAL

param_mapping

String

{'522822': {'LATITUDE': 'flag - latitude', 'ISO_DATETIME': 'flag - time', 'LONGITUDE': 'flag - longitude'}}

attribute

NC_GLOBAL

parameter_source

String

https://www.bco-dmo.org/mapserver/dataset/522822/parameters (external link)

attribute

NC_GLOBAL

people_0_affiliation

String

University of Southern California

attribute

NC_GLOBAL

people_0_affiliation_acronym

String

USC-HIMS

attribute

NC_GLOBAL

people_0_person_name

String

James W. Moffett

attribute

NC_GLOBAL

people_0_person_nid

String

50800

attribute

NC_GLOBAL

people_0_role

String

Lead Principal Investigator

attribute

NC_GLOBAL

people_0_role_type

String

originator

attribute

NC_GLOBAL

people_1_affiliation

String

Old Dominion University

attribute

NC_GLOBAL

people_1_affiliation_acronym

String

ODU

attribute

NC_GLOBAL

people_1_person_name

String

Gregory Cutter

attribute

NC_GLOBAL

people_1_person_nid

String

50679

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

Christopher R. German

attribute

NC_GLOBAL

people_2_person_nid

String

51700

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

University of Southern California

attribute

NC_GLOBAL

people_3_affiliation_acronym

String

USC-HIMS

attribute

NC_GLOBAL

people_3_person_name

String

James W. Moffett

attribute

NC_GLOBAL

people_3_person_nid

String

50800

attribute

NC_GLOBAL

people_3_role

String

Contact

attribute

NC_GLOBAL

people_3_role_type

String

attribute

NC_GLOBAL

people_4_affiliation

String

Woods Hole Oceanographic Institution

attribute

NC_GLOBAL

people_4_affiliation_acronym

String

WHOI BCO-DMO

attribute

NC_GLOBAL

people_4_person_name

String

Stephen R. Gegg

attribute

NC_GLOBAL

people_4_person_nid

String

50910

attribute

NC_GLOBAL

people_4_role

String

BCO-DMO Data Manager

attribute

NC_GLOBAL

people_4_role_type

String

attribute

NC_GLOBAL

project

String

U.S. GEOTRACES EPZT

attribute

NC_GLOBAL

projects_0_acronym

String

U.S. GEOTRACES EPZT

attribute

NC_GLOBAL

projects_0_description

String

From the NSF Award Abstract\nThe 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.\nThis 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.\nBroader 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.\nFigure 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/ (external link)

attribute

NC_GLOBAL

projects_0_start_date

String

2012-06

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

-15.99569

attribute

NC_GLOBAL

standard_name_vocabulary

String

CF Standard Name Table v55

attribute

NC_GLOBAL

subsetVariables

String

EXPOCODE,SECT_ID

attribute

NC_GLOBAL

summary

String

GeoFish nutrients and salts along the US GEOTRACES East Pacific Zonal Transect from the R/V Thomas G. Thompson TN303 cruise in the tropical Pacific from Peru to Tahiti during 2013.

attribute

NC_GLOBAL

time_coverage_end

String

2012-12-30T16:49:00.00Z

attribute

NC_GLOBAL

time_coverage_start

String

2012-12-01T08:06:00.00Z

attribute

NC_GLOBAL

title

String

[GP16 GeoFish - Nuts and Sals] - GeoFish nutrients and salts along the US GEOTRACES East Pacific Zonal Transect from the R/V Thomas G. Thompson TN303 cruise in the tropical Pacific from Peru to Tahiti during 2013 (U.S. GEOTRACES EPZT project) (U.S. GEOTRACES East Pacific Zonal Transect)

attribute

NC_GLOBAL

version

String

attribute

NC_GLOBAL

Westernmost_Easting

double

-152.11975

attribute

NC_GLOBAL

xml_source

String

osprey2erddap.update_xml() v1.3

variable

EXPOCODE

String

attribute

EXPOCODE

bcodmo_name

String

Cruise Name

attribute

EXPOCODE

description

String

expedition code assigned by the CCHDO: NODCShipCodeYearMonthDay

attribute

EXPOCODE

long_name

String

EXPOCODE

attribute

EXPOCODE

units

String

text

variable

SECT_ID

String

attribute

SECT_ID

bcodmo_name

String

Cruise Name

attribute

SECT_ID

description

String

cruise section identification number

attribute

SECT_ID

long_name

String

SECT ID

attribute

SECT_ID

units

String

text

variable

GEOTRC_EVENTNO

short

attribute

GEOTRC_EVENTNO

_FillValue

short

32767

attribute

GEOTRC_EVENTNO

actual_range

short

4014, 4464

attribute

GEOTRC_EVENTNO

bcodmo_name

String

event

attribute

GEOTRC_EVENTNO

description

String

GEOTRACES Event Number

attribute

GEOTRC_EVENTNO

long_name

String

GEOTRC EVENTNO

attribute

GEOTRC_EVENTNO

nerc_identifier

String

https://vocab.nerc.ac.uk/collection/P01/current/EVTAGFL/ (external link)

attribute

GEOTRC_EVENTNO

units

String

dimensionless

variable

Station

String

attribute

Station

bcodmo_name

String

station

attribute

Station

description

String

Station Number

attribute

Station

long_name

String

Station

attribute

Station

units

String

dimensionless

variable

GEOTRC_SAMPNO

short

attribute

GEOTRC_SAMPNO

_FillValue

short

32767

attribute

GEOTRC_SAMPNO

actual_range

short

2091, 10339

attribute

GEOTRC_SAMPNO

bcodmo_name

String

sample

attribute

GEOTRC_SAMPNO

description

String

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/ (external link)

attribute

GEOTRC_SAMPNO

units

String

dimensionless

variable

DATE

int

attribute

DATE

_FillValue

int

2147483647

attribute

DATE

actual_range

int

20131029, 20131216

attribute

DATE

bcodmo_name

String

date

attribute

DATE

description

String

Station Date (GMT) in the format YYYYMMDD

attribute

DATE

long_name

String

DATE

attribute

DATE

nerc_identifier

String

https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/ (external link)

attribute

DATE

units

String

unitless

variable

time2

String

attribute

time2

bcodmo_name

String

time

attribute

time2

description

String

Station Time (GMT)

attribute

time2

long_name

String

TIME

attribute

time2

nerc_identifier

String

https://vocab.nerc.ac.uk/collection/P01/current/AHMSAA01/ (external link)

attribute

time2

units

String

HHMM

variable

time

double

attribute

time

_CoordinateAxisType

String

Time

attribute

time

actual_range

double

1.35434916E9, 1.35688614E9

attribute

time

axis

String

attribute

time

bcodmo_name

String

ISO_DateTime_UTC

attribute

time

description

String

Date/Time (ISO formatted)

attribute

time

ioos_category

String

Time

attribute

time

long_name

String

ISO DATETIME

attribute

time

nerc_identifier

String

https://vocab.nerc.ac.uk/collection/P01/current/DTUT8601/ (external link)

attribute

time

source_name

String

ISO_DATETIME

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

latitude

double

attribute

latitude

_CoordinateAxisType

String

Lat

attribute

latitude

_FillValue

double

NaN

attribute

latitude

actual_range

double

-15.99569, -10.21911

attribute

latitude

axis

String

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/ (external link)

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

-152.11975, -77.4525

attribute

longitude

axis

String

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/ (external link)

attribute

longitude

standard_name

String

longitude

attribute

longitude

units

String

degrees_east

variable

NO3

float

attribute

NO3

_FillValue

float

NaN

attribute

NO3

actual_range

float

-999.0, 15.26

attribute

NO3

bcodmo_name

String

NO3

attribute

NO3

colorBarMaximum

double

50.0

attribute

NO3

colorBarMinimum

double

0.0

attribute

NO3

description

String

NO3

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/ (external link)

attribute

NO3

units

String

umol/L

variable

PO4

float

attribute

PO4

_FillValue

float

NaN

attribute

PO4

actual_range

float

-999.0, 1.55

attribute

PO4

bcodmo_name

String

PO4

attribute

PO4

description

String

PO4

attribute

PO4

long_name

String

Mass Concentration Of Phosphate In Sea Water

attribute

PO4

units

String

umol/L

variable

SIL

float

attribute

SIL

_FillValue

float

NaN

attribute

SIL

actual_range

float

-999.0, 7.5

attribute

SIL

bcodmo_name

String

SiO4

attribute

SIL

description

String

SILICATE

attribute

SIL

long_name

String

SIL

attribute

SIL

nerc_identifier

String

https://vocab.nerc.ac.uk/collection/P01/current/SLCAAAZX/ (external link)

attribute

SIL

units

String

umol/L

variable

NO2

float

attribute

NO2

_FillValue

float

NaN

attribute

NO2

actual_range

float

-999.0, 0.61

attribute

NO2

bcodmo_name

String

NO2

attribute

NO2

colorBarMaximum

double

1.0

attribute

NO2

colorBarMinimum

double

0.0

attribute

NO2

description

String

NO2

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/ (external link)

attribute

NO2

units

String

umol/L

variable

Salinity

float

attribute

Salinity

_FillValue

float

NaN

attribute

Salinity

actual_range

float

34.95933, 36.1253

attribute

Salinity

bcodmo_name

String

sal_bottle

attribute

Salinity

colorBarMaximum

double

37.0

attribute

Salinity

colorBarMinimum

double

32.0

attribute

Salinity

description

String

Salinity

attribute

Salinity

long_name

String

Sea Water Practical Salinity

attribute

Salinity

units

String

PSS-78

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