ERDDAP > info > bcodmo_dataset_816278

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	[Chlorophyll-a] - Size-fractionated chlorophyll-a data from samples collected during R/V Savannah cruises conducted in the South Atlantic Bight off the coast of Georgia from 2015- 2017 (RUI: Vitamin B12 and nitrogen regulation of oceanic dimethylsulfoniopropionate and dimethylsulfide)		F   I   M	background			BCO-DMO	bcodmo_dataset_816278

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	All samples were pre-screened through a 202 \u00b5m Nitex mesh. Size- fractionated Chlorophyll a (Chl-a) samples were collected by passing discrete 1 L aliquots of seawater through Nitex with mesh sizes of 63 and 20 \u00b5m, and collecting the filtrate. The filtrate was then filtered under low vacuum through GF/F (Sterlitech) filters. An additional sample was directly filtered onto a GF/F filter for total Chl-a. The filters were extracted in 90% acetone overnight at -20\u00b0C and analyzed according to the protocol described by Welschmeyer (1994). The size classes were calculated by difference (total, > 63 \u00b5m, 63-20 \u00b5m, < 20 \u00b5m). nd = no data
attribute	NC_GLOBAL	awards_0_award_nid	String	516650
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-1436458
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward?AWD_ID=1436458
attribute	NC_GLOBAL	awards_0_funder_name	String	NSF Division of Ocean Sciences
attribute	NC_GLOBAL	awards_0_funding_acronym	String	NSF OCE
attribute	NC_GLOBAL	awards_0_funding_source_nid	String	355
attribute	NC_GLOBAL	awards_0_program_manager	String	David L. Garrison
attribute	NC_GLOBAL	awards_0_program_manager_nid	String	50534
attribute	NC_GLOBAL	cdm_data_type	String	Other
attribute	NC_GLOBAL	comment	String	Size-Fractionated Chlorophyll-a R/V Savannah cruises, 2015-2017 PI: Peter Lee (College of Charleston) Version date: 19 June 2020
attribute	NC_GLOBAL	Conventions	String	COARDS, CF-1.6, ACDD-1.3
attribute	NC_GLOBAL	creator_email	String	info at bco-dmo.org
attribute	NC_GLOBAL	creator_name	String	BCO-DMO
attribute	NC_GLOBAL	creator_type	String	institution
attribute	NC_GLOBAL	creator_url	String	https://www.bco-dmo.org/
attribute	NC_GLOBAL	data_source	String	extract_data_as_tsv version 2.3 19 Dec 2019
attribute	NC_GLOBAL	dataset_current_state	String	Final and no updates
attribute	NC_GLOBAL	date_created	String	2020-06-19T19:52:23Z
attribute	NC_GLOBAL	date_modified	String	2020-06-23T14:54:38Z
attribute	NC_GLOBAL	defaultDataQuery	String	&amp;time&lt;now
attribute	NC_GLOBAL	doi	String	10.26008/1912/bco-dmo.816278.1
attribute	NC_GLOBAL	Easternmost_Easting	double	-76.343633
attribute	NC_GLOBAL	geospatial_lat_max	double	31.42113
attribute	NC_GLOBAL	geospatial_lat_min	double	31.031829
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	-76.343633
attribute	NC_GLOBAL	geospatial_lon_min	double	-81.121513
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	geospatial_vertical_max	double	235.0
attribute	NC_GLOBAL	geospatial_vertical_min	double	1.5
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/816278
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	816294
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_0_supplied_name	String	Niskin bottle
attribute	NC_GLOBAL	instruments_1_acronym	String	CTD SBE 25
attribute	NC_GLOBAL	instruments_1_dataset_instrument_nid	String	816291
attribute	NC_GLOBAL	instruments_1_description	String	The Sea-Bird SBE 25 SEALOGGER CTD is battery powered and is typically used to record data in memory, eliminating the need for a large vessel, electrical sea cable, and on-board computer. All SBE 25s can also operate in real-time, transmitting data via an opto-isolated RS-232 serial port. Temperature and conductivity are measured by the SBE 3F Temperature sensor and SBE 4 Conductivity sensor (same as those used on the premium SBE 9plus CTD). The SBE 25 also includes the SBE 5P (plastic) or 5T (titanium) Submersible Pump and TC Duct. The pump-controlled, TC-ducted flow configuration significantly reduces salinity spiking caused by ship heave, and in calm waters allows slower descent rates for improved resolution of water column features. Pressure is measured by the modular SBE 29 Temperature Compensated Strain-Gauge Pressure sensor (available in eight depth ranges to suit the operating depth requirement). The SBE 25's modular design makes it easy to configure in the field for a wide range of auxiliary sensors, including optional dissolved oxygen (SBE 43), pH (SBE 18 or SBE 27), fluorescence, transmissivity, PAR, and optical backscatter sensors. More information from Sea-Bird Electronics: http:www.seabird.com.
attribute	NC_GLOBAL	instruments_1_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L22/current/TOOL0040/
attribute	NC_GLOBAL	instruments_1_instrument_name	String	CTD Sea-Bird 25
attribute	NC_GLOBAL	instruments_1_instrument_nid	String	421
attribute	NC_GLOBAL	instruments_1_supplied_name	String	SBE-25 CTD
attribute	NC_GLOBAL	instruments_2_acronym	String	CTD SBE 911
attribute	NC_GLOBAL	instruments_2_dataset_instrument_nid	String	816292
attribute	NC_GLOBAL	instruments_2_description	String	The Sea-Bird SBE 911 is a type of CTD instrument package. The SBE 911 includes the SBE 9 Underwater Unit and the SBE 11 Deck Unit (for real-time readout using conductive wire) for deployment from a vessel. The combination of the SBE 9 and SBE 11 is called a SBE 911. The SBE 9 uses Sea-Bird's standard modular temperature and conductivity sensors (SBE 3 and SBE 4). The SBE 9 CTD can be configured with 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_2_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L22/current/TOOL0035/
attribute	NC_GLOBAL	instruments_2_instrument_name	String	CTD Sea-Bird 911
attribute	NC_GLOBAL	instruments_2_instrument_nid	String	422
attribute	NC_GLOBAL	instruments_2_supplied_name	String	Sea-Bird Scientific SBE 911 CTD carousel
attribute	NC_GLOBAL	instruments_3_acronym	String	Turner Fluorometer 10-AU
attribute	NC_GLOBAL	instruments_3_dataset_instrument_nid	String	816296
attribute	NC_GLOBAL	instruments_3_description	String	The Turner Designs 10-AU Field Fluorometer is used to measure Chlorophyll fluorescence. The 10AU Fluorometer can be set up for continuous-flow monitoring or discrete sample analyses. A variety of compounds can be measured using application-specific optical filters available from the manufacturer. (read more from Turner Designs, turnerdesigns.com, Sunnyvale, CA, USA)
attribute	NC_GLOBAL	instruments_3_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L22/current/TOOL0393/
attribute	NC_GLOBAL	instruments_3_instrument_name	String	Turner Designs Fluorometer 10-AU
attribute	NC_GLOBAL	instruments_3_instrument_nid	String	464
attribute	NC_GLOBAL	instruments_3_supplied_name	String	Turner Designs 10AU Fluorometer
attribute	NC_GLOBAL	keywords	String	bco, bco-dmo, biological, bottom, Bottom_Depth, bw_63_20_um, chemical, chemistry, chlorophyll, concentration, concentration_of_chlorophyll_in_sea_water, cruise, Cruise_ID, data, dataset, date, depth, dmo, earth, Earth Science > Oceans > Ocean Chemistry > Chlorophyll, erddap, gt_63_um, iso, latitude, longitude, lt_20_um, management, ocean, oceanography, oceans, office, preliminary, science, sea, seawater, station, Station_ID, time, Total_Chl_a, UTC_Date, UTC_Time, water
attribute	NC_GLOBAL	keywords_vocabulary	String	GCMD Science Keywords
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/816278/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/816278
attribute	NC_GLOBAL	Northernmost_Northing	double	31.42113
attribute	NC_GLOBAL	param_mapping	String	{'816278': {'Latitude': 'flag - latitude', 'Depth': 'flag - depth', 'Longitude': 'flag - longitude', 'ISO_DateTime_UTC': 'flag - time'}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/816278/parameters
attribute	NC_GLOBAL	people_0_affiliation	String	College of Charleston - Hollings Marine Lab
attribute	NC_GLOBAL	people_0_affiliation_acronym	String	CoC-HML
attribute	NC_GLOBAL	people_0_person_name	String	Peter Lee
attribute	NC_GLOBAL	people_0_person_nid	String	516649
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	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_1_affiliation_acronym	String	WHOI BCO-DMO
attribute	NC_GLOBAL	people_1_person_name	String	Shannon Rauch
attribute	NC_GLOBAL	people_1_person_nid	String	51498
attribute	NC_GLOBAL	people_1_role	String	BCO-DMO Data Manager
attribute	NC_GLOBAL	people_1_role_type	String	related
attribute	NC_GLOBAL	project	String	B12 Impacts on DMSP
attribute	NC_GLOBAL	projects_0_acronym	String	B12 Impacts on DMSP
attribute	NC_GLOBAL	projects_0_description	String	Description from NSF award abstract: Vitamin B12 and nitrogen are nutrients critical to phytoplankton growth. Since B12 is produced solely by bacteria, phytoplankton must acquire their B12 from bacteria. Nitrogen is used to produce the amino acid methionine and B12 is required by the enzymes that form methionine. Methionine is the precursor to the algal metabolite dimethylsulfoniopropionate (DMSP). Bacteria degrade this compound to the climatically-active compound dimethylsulfide (DMS). Subsequent DMS transfer into the atmosphere is considered a significant driver of cloud formation and a possible climate feedback mechanism. DMSP can also be degraded via a secondary pathway to form methylmercaptopropionate (MMPA), which is not released to the atmosphere. Consequently, DMSP formation and the extent of DMSP degradation to DMS or MMPA are susceptible to B12 availability. Nitrogen availability influences this effect by controlling methionine production. Thus, the overarching premise for this study is that B12 availability regulates oceanic DMSP and DMS formation, and is synergistically impacted by nitrogen limitation. By providing a mechanistic understanding of relevant biogeochemical parameters this study will significantly improve the incorporation of sulfur-related microbial processes into climate models. This project will combine established biogeochemistry-based measurements with cutting-edge metabolomics, transcriptomics and proteomics techniques in laboratory and field studies. Culture experiments will examine the interactive effect of B12 and nitrogen availability on DMSP formation in several ecologically-relevant phytoplankton taxa. Second, the microbial degradation of DMSP and DMS in relation to B12 availability will be examined using several environmentally-important bacteria and archaea. Finally, field studies will examine the seasonal variability of B12, DMSP and DMS, and the relative importance of DMS and MMPA formation in the South Atlantic Bight. Gene and protein expression will be assessed at each level of this study to identify gene products, metabolic pathways, and cellular mechanisms underlying the interconnections between B12, sulfur, and nitrogen cycles. The results generated will have a major impact on current understanding of the role of B12 and nitrogen on the DMSP and DMS cycling, as well as the potential role of these stressors in global climate change. In addition to providing evidence for microbe-based mechanisms behind the modulation of oceanic DMS, this project will (1) furnish an explanation for "summer DMS paradox", thus having significant implications for the development of future DMS models, (2) assess the interactive impact of B12 and nitrogen availability on intracellular DMSP production and (3) provide insight as to whether B12 may play a far more critical role in modulating climate feedback mechanisms on phytoplankton productivity.
attribute	NC_GLOBAL	projects_0_end_date	String	2019-01
attribute	NC_GLOBAL	projects_0_geolocation	String	North Atlantic Ocean in the South Atlantic Bight off the coast of Georgia; Navy Op Area NA06
attribute	NC_GLOBAL	projects_0_name	String	RUI: Vitamin B12 and nitrogen regulation of oceanic dimethylsulfoniopropionate and dimethylsulfide
attribute	NC_GLOBAL	projects_0_project_nid	String	516651
attribute	NC_GLOBAL	projects_0_start_date	String	2014-08
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	31.031829
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	summary	String	Size-fractionated chlorophyll-a data collected during several R/V Savannah cruises conducted from 2015 to 2017 along a transect from shelf waters to oligotrophic waters in the South Atlantic Bight off the coast of Georgia (Navy Op Area NA06).
attribute	NC_GLOBAL	time_coverage_end	String	2017-01-27T16:24:31Z
attribute	NC_GLOBAL	time_coverage_start	String	2015-03-16T15:56:47Z
attribute	NC_GLOBAL	title	String	[Chlorophyll-a] - Size-fractionated chlorophyll-a data from samples collected during R/V Savannah cruises conducted in the South Atlantic Bight off the coast of Georgia from 2015-2017 (RUI: Vitamin B12 and nitrogen regulation of oceanic dimethylsulfoniopropionate and dimethylsulfide)
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	Westernmost_Easting	double	-81.121513
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 Identifier
attribute	Cruise_ID	long_name	String	Cruise ID
attribute	Cruise_ID	units	String	unitless
variable	Station_ID		String
attribute	Station_ID	bcodmo_name	String	station
attribute	Station_ID	description	String	Station number
attribute	Station_ID	long_name	String	Station ID
attribute	Station_ID	units	String	unitless
variable	UTC_Date		String
attribute	UTC_Date	bcodmo_name	String	date
attribute	UTC_Date	description	String	Start date for sample collection; Coordinated Universal Time; Format: MM/DD/YYYY
attribute	UTC_Date	long_name	String	UTC Date
attribute	UTC_Date	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/
attribute	UTC_Date	time_precision	String	1970-01-01
attribute	UTC_Date	units	String	unitless
variable	UTC_Time		String
attribute	UTC_Time	bcodmo_name	String	time
attribute	UTC_Time	description	String	Start time for sample collection; Coordinated Universal Time; Format: hh:mm:ss
attribute	UTC_Time	long_name	String	UTC Time
attribute	UTC_Time	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/AHMSAA01/
attribute	UTC_Time	units	String	unitless
variable	time		double
attribute	time	_CoordinateAxisType	String	Time
attribute	time	actual_range	double	1.426521407E9, 1.485534271E9
attribute	time	axis	String	T
attribute	time	bcodmo_name	String	ISO_DateTime_UTC
attribute	time	description	String	Start date and time of sample collection formatted to ISO8601 standard: YYYY-MM-DDThh:mm:ssZ
attribute	time	ioos_category	String	Time
attribute	time	long_name	String	ISO Date Time UTC
attribute	time	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/DTUT8601/
attribute	time	source_name	String	ISO_DateTime_UTC
attribute	time	standard_name	String	time
attribute	time	time_origin	String	01-JAN-1970 00:00:00
attribute	time	time_precision	String	1970-01-01T00:00:00Z
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	31.031829, 31.42113
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	Start latitude for sample collection; Negative = South
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	-81.121513, -76.343633
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	Start longitude for sample collection; Negative = West
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	Bottom_Depth		float
attribute	Bottom_Depth	_FillValue	float	NaN
attribute	Bottom_Depth	actual_range	float	8.6, 3400.0
attribute	Bottom_Depth	bcodmo_name	String	depth_w
attribute	Bottom_Depth	description	String	Bottom depth from ship's sonar
attribute	Bottom_Depth	long_name	String	Bottom Depth
attribute	Bottom_Depth	units	String	meters (m)
variable	depth		double
attribute	depth	_CoordinateAxisType	String	Height
attribute	depth	_CoordinateZisPositive	String	down
attribute	depth	_FillValue	double	NaN
attribute	depth	actual_range	double	1.5, 235.0
attribute	depth	axis	String	Z
attribute	depth	bcodmo_name	String	depth
attribute	depth	colorBarMaximum	double	8000.0
attribute	depth	colorBarMinimum	double	-8000.0
attribute	depth	colorBarPalette	String	TopographyDepth
attribute	depth	description	String	Sample depth from CTD readout
attribute	depth	ioos_category	String	Location
attribute	depth	long_name	String	Depth
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	Total_Chl_a		float
attribute	Total_Chl_a	_FillValue	float	NaN
attribute	Total_Chl_a	actual_range	float	0.0, 6.566
attribute	Total_Chl_a	bcodmo_name	String	chl_a_tot
attribute	Total_Chl_a	colorBarMaximum	double	30.0
attribute	Total_Chl_a	colorBarMinimum	double	0.03
attribute	Total_Chl_a	colorBarScale	String	Log
attribute	Total_Chl_a	description	String	Total chlorophyll-a concentration
attribute	Total_Chl_a	long_name	String	Concentration Of Chlorophyll In Sea Water
attribute	Total_Chl_a	units	String	micrograms per liter (ug/L)
variable	gt_63_um		float
attribute	gt_63_um	_FillValue	float	NaN
attribute	gt_63_um	actual_range	float	-0.208, 4.943
attribute	gt_63_um	bcodmo_name	String	chl_a_fluor
attribute	gt_63_um	description	String	Chlorophyll-a concentration in plankton greater than 63 micrometers
attribute	gt_63_um	long_name	String	Gt 63 Um
attribute	gt_63_um	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/CPHLFLPC/
attribute	gt_63_um	units	String	micrograms per liter (ug/L)
variable	bw_63_20_um		float
attribute	bw_63_20_um	_FillValue	float	NaN
attribute	bw_63_20_um	actual_range	float	0.0, 2.285
attribute	bw_63_20_um	bcodmo_name	String	chl_a_fluor
attribute	bw_63_20_um	description	String	Chlorophyll-a concentration in plankton in size range 20-63 micrometers
attribute	bw_63_20_um	long_name	String	Bw 63 20 Um
attribute	bw_63_20_um	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/CPHLFLPC/
attribute	bw_63_20_um	units	String	micrograms per liter (ug/L)
variable	lt_20_um		float
attribute	lt_20_um	_FillValue	float	NaN
attribute	lt_20_um	actual_range	float	0.0, 2.783
attribute	lt_20_um	bcodmo_name	String	chl_a_fluor
attribute	lt_20_um	description	String	Chlorophyll-a concentration in plankton smaller than 20 micrometers
attribute	lt_20_um	long_name	String	Lt 20 Um
attribute	lt_20_um	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/CPHLFLPC/
attribute	lt_20_um	units	String	micrograms per liter (ug/L)

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.