ERDDAP > info > bcodmo_dataset_3520

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	[GT10 - As AP Surface Transects] - Surface arsenic, antimony speciation, and alkaline phosphatase activity along with US GEOTRACES North Atlantic Transect from the R/V Knorr KN199- 04, KN199-05 cruises in the subtropical N. Atlantic during 2010 (U.S. GEOTRACES NAT project) (U.S. GEOTRACES North Atlantic Transect)		F   I   M	background			BCO-DMO	bcodmo_dataset_3520

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	Filtered (0.4 \u00b5m) water samples from the Geotraces surface tow-fish taken at discrete times into 500 mL Teflon FEP bottles, refrigerated, and analyzed within 24 hours of collection. Arsenic and antimony speciation determined using selective hydride generation, liquid nitrogen-cooled trapping, and then revolatilization and determination with gas chromatography/photoionization detection (Cutter et al., 1991; Cutter and Cutter, 2006). Calibration performed daily via the standard additions method, with a minimum of 4 additions of AsIII, AsV, MMAs, or DMAs depending on the analyses. The slope from the linear fit to these data was then applied to all samples for that day. Detection limits were 25 pmol/L for As(III) and As(III+V), and 50 pmol/L for MMAs and DMAs. Precision was better than 8% (relative standard deviation) for all As species. Alkaline phosphatase enzyme activity was measured using the fluorescence method of Ammerman (1993).
attribute	NC_GLOBAL	awards_0_award_nid	String	54753
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-0926423
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=0926423
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	54938
attribute	NC_GLOBAL	awards_1_award_number	String	OCE-0926092
attribute	NC_GLOBAL	awards_1_data_url	String	http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=0926092
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	Donald L. Rice
attribute	NC_GLOBAL	awards_1_program_manager_nid	String	51467
attribute	NC_GLOBAL	cdm_data_type	String	Other
attribute	NC_GLOBAL	comment	String	Version: 3 January 2013 PI: Cutter KN199-04/05 Surface transects for arsenic speciation, antimony speciation, and alkaline phosphatase activity Please note that data may not be final, pending intercalibration results and further analysis. If you are interested in following changes to US GEOTRACES NAT data, there is an RSS feed available via the BCO-DMO US GEOTRACES <a href="https://www.bco-dmo.org/project/2066" target="_blank">project page</a>.
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	2011-08-08T17:18:28Z
attribute	NC_GLOBAL	date_modified	String	2020-04-10T19:16:20Z
attribute	NC_GLOBAL	defaultDataQuery	String	&amp;time&lt;now
attribute	NC_GLOBAL	doi	String	10.26008/1912/bco-dmo.3520.2
attribute	NC_GLOBAL	Easternmost_Easting	double	-16.0467
attribute	NC_GLOBAL	geospatial_lat_max	double	35.16
attribute	NC_GLOBAL	geospatial_lat_min	double	16.921
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	-16.0467
attribute	NC_GLOBAL	geospatial_lon_min	double	-79.8822
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/3520
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	instruments_0_acronym	String	GeoFish
attribute	NC_GLOBAL	instruments_0_dataset_instrument_description	String	Surface seawater samples were collected from ~2-5 meters depth outside of ship's influence using the UCSC designed "GeoFish" towed sampling system. All surface samples were filtered and then homogenized in one or two of the 500 L SAFe tanks GeoFish/SAFe tank system consists of PFA TeflonTM tubing, an all PFA TeflonTM diaphragm pump, sequential filtration through 0.45 µm then 0.2 µm pore size polycarbonate, track etched (PCTE) pleated filter cartridges and two 500 L fluorinated low density polyethylene tanks connected with all TeflonTM tubing, valves and fittings. All filtrations, acidifications and bottling of the SAFe and GEOTRACES samples were performed inside of Class-100 clean benches in a portable clean van.
attribute	NC_GLOBAL	instruments_0_dataset_instrument_nid	String	5724
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	instruments_0_supplied_name	String	UCSC designed "GeoFish" towed sampling system
attribute	NC_GLOBAL	instruments_1_acronym	String	TUV
attribute	NC_GLOBAL	instruments_1_dataset_instrument_nid	String	6017
attribute	NC_GLOBAL	instruments_1_description	String	A towed undulating vehicle is a generic class of instruments. See the data set specific information for a detailed description. These are often prototype instrument packages designed to make very specific measurements.
attribute	NC_GLOBAL	instruments_1_instrument_name	String	towed undulating vehicle
attribute	NC_GLOBAL	instruments_1_instrument_nid	String	604
attribute	NC_GLOBAL	instruments_1_supplied_name	String	towed undulating vehicle
attribute	NC_GLOBAL	instruments_2_acronym	String	Gas Chromatograph
attribute	NC_GLOBAL	instruments_2_dataset_instrument_description	String	(tbd)
attribute	NC_GLOBAL	instruments_2_dataset_instrument_nid	String	5725
attribute	NC_GLOBAL	instruments_2_description	String	Instrument separating gases, volatile substances, or substances dissolved in a volatile solvent by transporting an inert gas through a column packed with a sorbent to a detector for assay. (from SeaDataNet, BODC)
attribute	NC_GLOBAL	instruments_2_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/LAB02/
attribute	NC_GLOBAL	instruments_2_instrument_name	String	Gas Chromatograph
attribute	NC_GLOBAL	instruments_2_instrument_nid	String	661
attribute	NC_GLOBAL	instruments_2_supplied_name	String	Gas Chromatograph
attribute	NC_GLOBAL	keywords	String	AP_Turnover_Rate, AP_Turnover_Time, AsIII, bco, bco-dmo, biological, chemical, cruise, cruise_id, data, dataset, date, dmas, dmo, erddap, iii, latitude, longitude, management, mmas, oceanography, office, preliminary, rate, station, tas, time, time2, transect, transect_station, turnover
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/3520/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/3520
attribute	NC_GLOBAL	Northernmost_Northing	double	35.16
attribute	NC_GLOBAL	param_mapping	String	{'3520': {'lat': 'master - latitude', 'lon': 'master - longitude'}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/3520/parameters
attribute	NC_GLOBAL	people_0_affiliation	String	Old Dominion University
attribute	NC_GLOBAL	people_0_affiliation_acronym	String	ODU
attribute	NC_GLOBAL	people_0_person_name	String	Gregory Cutter
attribute	NC_GLOBAL	people_0_person_nid	String	50679
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	Old Dominion University
attribute	NC_GLOBAL	people_1_affiliation_acronym	String	ODU
attribute	NC_GLOBAL	people_1_person_name	String	Oliver Wurl
attribute	NC_GLOBAL	people_1_person_nid	String	51337
attribute	NC_GLOBAL	people_1_role	String	Contact
attribute	NC_GLOBAL	people_1_role_type	String	related
attribute	NC_GLOBAL	people_2_affiliation	String	Leibniz Institute for Baltic Sea Research Warnemunde Germany
attribute	NC_GLOBAL	people_2_person_name	String	Oliver Wurl
attribute	NC_GLOBAL	people_2_person_nid	String	51337
attribute	NC_GLOBAL	people_2_role	String	Contact
attribute	NC_GLOBAL	people_2_role_type	String	related
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	Stephen R. Gegg
attribute	NC_GLOBAL	people_3_person_nid	String	50910
attribute	NC_GLOBAL	people_3_role	String	BCO-DMO Data Manager
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	Theresa McKee
attribute	NC_GLOBAL	people_4_person_nid	String	51103
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 NAT
attribute	NC_GLOBAL	projects_0_acronym	String	U.S. GEOTRACES NAT
attribute	NC_GLOBAL	projects_0_description	String	Much of this text appeared in an article published in OCB News, October 2008, by the OCB Project Office. The first U.S. GEOTRACES Atlantic Section will be specifically centered around a sampling cruise to be carried out in the North Atlantic in 2010. Ed Boyle (MIT) and Bill Jenkins (WHOI) organized a three-day planning workshop that was held September 22-24, 2008 at the Woods Hole Oceanographic Institution. The main goal of the workshop, sponsored by the National Science Foundation and the U.S. GEOTRACES Scientific Steering Committee, was to design the implementation plan for the first U.S. GEOTRACES Atlantic Section. The primary cruise design motivation was to improve knowledge of the sources, sinks and internal cycling of Trace Elements and their Isotopes (TEIs) by studying their distributions along a section in the North Atlantic (Figure 1). The North Atlantic has the full suite of processes that affect TEIs, including strong meridional advection, boundary scavenging and source effects, aeolian deposition, and the salty Mediterranean Outflow. The North Atlantic is particularly important as it lies at the "origin" of the global Meridional Overturning Circulation. It is well understood that many trace metals play important roles in biogeochemical processes and the carbon cycle, yet very little is known about their large-scale distributions and the regional scale processes that affect them. Recent advances in sampling and analytical techniques, along with advances in our understanding of their roles in enzymatic and catalytic processes in the open ocean provide a natural opportunity to make substantial advances in our understanding of these important elements. Moreover, we are motivated by the prospect of global change and the need to understand the present and future workings of the ocean's biogeochemistry. The GEOTRACES strategy is to measure a broad suite of TEIs to constrain the critical biogeochemical processes that influence their distributions. In addition to these "exotic" substances, more traditional properties, including macronutrients (at micromolar and nanomolar levels), CTD, bio-optical parameters, and carbon system characteristics will be measured. The cruise starts at Line W, a repeat hydrographic section southeast of Cape Cod, extends to Bermuda and subsequently through the North Atlantic oligotrophic subtropical gyre, then transects into the African coast in the northern limb of the coastal upwelling region. From there, the cruise goes northward into the Mediterranean outflow. The station locations shown on the map are for the "fulldepth TEI" stations, and constitute approximately half of the stations to be ultimately occupied. Figure 1. The proposed 2010 Atlantic GEOTRACES cruise track plotted on dissolved oxygen at 400 m depth. Data from the World Ocean Atlas (Levitus et al., 2005) were plotted using Ocean Data View (courtesy Reiner Schlitzer). [click on the image to view a larger version] Hydrography, CTD and nutrient measurements will be supported by the Ocean Data Facility (J. Swift) at Scripps Institution of Oceanography and funded through NSF Facilities. They will be providing an additional CTD rosette system along with nephelometer and LADCP. A trace metal clean Go-Flo Rosette and winch will be provided by the group at Old Dominion University (G. Cutter) along with a towed underway pumping system. The North Atlantic Transect cruise began in 2010 with KN199 leg 4 (station sampling) and leg 5 (underway sampling only) (Figure 2). KN199-04 Cruise Report (PDF) Figure 2. The red line shows the cruise track for the first leg of the US Geotraces North Atlantic Transect on the R/V Knorr in October 2010.  The rest of the stations (beginning with 13) will be completed in October-December 2011 on the R/V Knorr (courtesy of Bill Jenkins, Chief Scientist, GNAT first leg). [click on the image to view a larger version] The section completion effort resumed again in November 2011 with KN204-01A,B (Figure 3). KN204-01A,B Cruise Report (PDF) Figure 3. Station locations occupied on the US Geotraces North Atlantic Transect on the R/V Knorr in November 2011.  [click on the image to view a larger version] Data from the North Atlantic Transect cruises are available under the Datasets heading below, and consensus values for the SAFe and North Atlantic GEOTRACES Reference Seawater Samples are available from the GEOTRACES Program Office: Standards and Reference Materials ADCP data are available from the Currents ADCP group at the University of Hawaii at the links below:KN199-04   (leg 1 of 2010 cruise; Lisbon to Cape Verde)KN199-05   (leg 2 of 2010 cruise; Cape Verde to Charleston, NC)KN204-01A (part 1 of 2011 cruise; Woods Hole, MA to Bermuda)KN204-01B (part 2 of 2011 cruise; Bermuda to Cape Verde)
attribute	NC_GLOBAL	projects_0_end_date	String	2013-08
attribute	NC_GLOBAL	projects_0_geolocation	String	Subtropical western and eastern North Atlantic Ocean
attribute	NC_GLOBAL	projects_0_name	String	U.S. GEOTRACES North Atlantic Transect
attribute	NC_GLOBAL	projects_0_project_nid	String	2066
attribute	NC_GLOBAL	projects_0_project_website	String	https://www.geotraces.org/
attribute	NC_GLOBAL	projects_0_start_date	String	2010-10
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	16.921
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	summary	String	Data for the concentrations of the dissolved (<0.4 \u00b5m) arsenic species: total inorganic As (III+V), arsenite (AsIII), arsenate (AsV), monomethyl As, and dimethyl As; and the activity of the enzyme alkaline phosphatase (unfiltered) on the surface transect.
attribute	NC_GLOBAL	title	String	[GT10 - As AP Surface Transects] - Surface arsenic, antimony speciation, and alkaline phosphatase activity along with US GEOTRACES North Atlantic Transect from the R/V Knorr KN199-04, KN199-05 cruises in the subtropical N. Atlantic during 2010 (U.S. GEOTRACES NAT project) (U.S. GEOTRACES North Atlantic Transect)
attribute	NC_GLOBAL	version	String	2
attribute	NC_GLOBAL	Westernmost_Easting	double	-79.8822
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.3
variable	cruise_id		String
attribute	cruise_id	bcodmo_name	String	cruise_id
attribute	cruise_id	description	String	cruise id
attribute	cruise_id	long_name	String	Cruise Id
attribute	cruise_id	units	String	text
variable	transect_station		String
attribute	transect_station	bcodmo_name	String	transect_station
attribute	transect_station	description	String	station identifier within transect
attribute	transect_station	long_name	String	Transect Station
attribute	transect_station	units	String	text
variable	date		int
attribute	date	_FillValue	int	2147483647
attribute	date	actual_range	int	20101020, 20101126
attribute	date	bcodmo_name	String	date
attribute	date	description	String	Date 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	Time
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	latitude		double
attribute	latitude	_CoordinateAxisType	String	Lat
attribute	latitude	_FillValue	double	NaN
attribute	latitude	actual_range	double	16.921, 35.16
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 (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	-79.8822, -16.0467
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 (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	AsIII		float
attribute	AsIII	_FillValue	float	NaN
attribute	AsIII	actual_range	float	0.08, 7.6
attribute	AsIII	bcodmo_name	String	unknown
attribute	AsIII	description	String	Arsenite (HAsO32-)
attribute	AsIII	long_name	String	As III
attribute	AsIII	units	String	nmol/L
variable	TAs		float
attribute	TAs	_FillValue	float	NaN
attribute	TAs	actual_range	float	3.2, 35.5
attribute	TAs	bcodmo_name	String	unknown
attribute	TAs	description	String	Total inorganic arsenic (AsIII+V)
attribute	TAs	long_name	String	TAs
attribute	TAs	units	String	nmol/L
variable	As		float
attribute	As	_FillValue	float	NaN
attribute	As	actual_range	float	1.94, 35.2
attribute	As	bcodmo_name	String	arsenic
attribute	As	description	String	As(V)
attribute	As	long_name	String	As
attribute	As	units	String	nanomoles/liter
variable	MMAs		float
attribute	MMAs	_FillValue	float	NaN
attribute	MMAs	actual_range	float	0.01, 0.46
attribute	MMAs	bcodmo_name	String	unknown
attribute	MMAs	description	String	Monomethyl arsenic
attribute	MMAs	long_name	String	MMAs
attribute	MMAs	units	String	nmol/L
variable	DMAs		float
attribute	DMAs	_FillValue	float	NaN
attribute	DMAs	actual_range	float	0.03, 4.71
attribute	DMAs	bcodmo_name	String	unknown
attribute	DMAs	description	String	Dimethyl arsenic
attribute	DMAs	long_name	String	DMAs
attribute	DMAs	units	String	nmol/L
variable	AP_Turnover_Time		float
attribute	AP_Turnover_Time	_FillValue	float	NaN
attribute	AP_Turnover_Time	actual_range	float	0.29, 6.15
attribute	AP_Turnover_Time	bcodmo_name	String	unknown
attribute	AP_Turnover_Time	description	String	Alkaline phosphatase turnover time
attribute	AP_Turnover_Time	long_name	String	AP Turnover Time
attribute	AP_Turnover_Time	units	String	hours
variable	AP_Turnover_Rate		float
attribute	AP_Turnover_Rate	_FillValue	float	NaN
attribute	AP_Turnover_Rate	actual_range	float	0.0022, 0.1376
attribute	AP_Turnover_Rate	bcodmo_name	String	unknown
attribute	AP_Turnover_Rate	description	String	Alkaline phosphatase turnover rate
attribute	AP_Turnover_Rate	long_name	String	AP Turnover Rate
attribute	AP_Turnover_Rate	units	String	h-1

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.