Dataset: GN01 CTD - GTC Bottle

Name: Bottle data from the GEOTRACES Clean Carousel sampling system (GTC) on the Arctic Section cruise (HLY1502) from August to October 2015 (U.S. GEOTRACES Arctic project)
Published: 2019-07-29
Keywords: oceans

Cite This Dataset

DOI:10.1575/1912/bco-dmo.647259.4

Spatial Extent: N:89.995 E:179.5926 S:60.1727 W:-179.8082

Temporal Extent: 2015-08-12 - 2015-10-07

Project:

U.S. Arctic GEOTRACES Study (GN01) (U.S. GEOTRACES Arctic)

Program:

U.S. GEOTRACES (U.S. GEOTRACES)

Principal Investigator:

Gregory A. Cutter (Old Dominion University, ODU)

David C. Kadko (Florida International University, FIU)

William M. Landing (Florida State University EOAS, FSU - EOAS)

Contact:

William M. Landing (Florida State University EOAS, FSU - EOAS)

BCO-DMO Data Manager:

Nancy Copley (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2019-07-29

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Bottle data from the GEOTRACES Clean Carousel sampling system (GTC) on the Arctic Section cruise (HLY1502) from August to October 2015 (U.S. GEOTRACES Arctic project)

Abstract:

Bottle data from the GEOTRACES Clean Carousel sampling system (GTC) on the Arctic Section cruise (HLY1502) from August to October 2015.

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Archival Copy

Version Date	Archive	Persistent Identifier (PID)	Date PID Issued
2019-07-29	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.1575/1912/bco-dmo.647259.4	2019-07-31

Description

Bottle data from the GTC CTD using the GEOTRACES Clean Carousel sampling system (GTC), GEOTRACES Arctic cruise HLY1502.

GTC CTD BOTTLE file name from the Scripps Oceanographic Data Facility (ODF): 20160609ODU

Note: 'FLAG_W' columns correspond to the WHP (WOCE Hydrographic Program) quality flag scheme.

Methods & Sampling

The Go-Flo bottles were rearranged between casts to eliminate the possibility of sampling bias. See the HLY1502 cruise report for more information on data acquisition.

NOTE: Station 4 cast 3 was abandoned due to non-tripped bottles (note the BTLNBR_FLAG_W values of "9") and repeated as Station 4 cast 5 using the same sample numbers. Disregard information for samples 10611, 10610, 10609, 10608, 10607, and 10606 where CASTNO = 3.

Data Processing Description

Version history:
2019-07-29: version 4: removed all "placeholder" columns containing no data (-999 only). These columns were included in the original files from ODF to indicate the expected datasets. All data reported from the cruise can by found on the HLY1502 cruise page or on the U.S. Arctic GEOTRACES project page.

2017-05-01: new version (3) served on 2017-05-01] replaces v2: 2016-06-09. Event 6079 was revised and event 6369 was added back to the file. It was present in version 2016-05-17 but missing in version 2016-06-09. SOLUBLE_TH and SOLUBLE_TH_FLAG_W contain no data so blanks were replaced with nd for 'no data'.

2016-06-09: new version (2) served [2016-06-09], replaces v:2016-05-17.

2016-05-17: version 1 served.

BCO-DMO Processing:
- added conventional header with dataset name; PI name; version date;
- added cruise_id column;
- reformatted time as HHMM;
- changed all hyphen, slash, and decimal points in parameter names to underscores (changed TH-232_COLL_0.02MICR to TH_232_COLL_02MICR);
- hour=2400 not legal time; changed day by one and time to 0000 (only for station 41/cast 3/event 6277);
- ZN_DISS and ZN_DISS_FLAG_W duplicated - removed pair with no data;
- 2019-07-29: removed all "placeholder" columns containing no data (-999 only); a list of the removed columns available as a tab-separated file: GTC_Bottle_Removals_20190729.tsv

Data Files

File
GTC_Bottle_v20190729.csv (Comma Separated Values (.csv), 282.44 KB) MD5:b286a7aeae8c4fcda020396eb05a96e4 Primary data file for dataset ID 647259

Supplemental Files

File
ARC01 (HLY1502, GN01) cruise report filename: ARC01-report.pdf (Portable Document Format (.pdf), 4.02 MB) MD5:371276af63d6b2d7f9127446e3b2c66e U.S. Arctic GEOTRACES cruise report

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1355833
NSF Division of Ocean Sciences	OCE-1355913
NSF Division of Ocean Sciences	OCE-1356008
NSF Division of Ocean Sciences	OCE-1455924

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
HLY1502	GN01 U.S. GEOTRACES Arctic 32H120150809	2015-08-09	USCGC Healy	David C. Kadko (Chief Scientist) William M. Landing (Co-Chief Scientist)	data info

Instruments

CTD Sea-Bird SBE 911plus

Supplied Name:

Supplied Description:

The system included a Dynacon winch with 7300 m of Vectran cable with conductors, clean lab, and Seabird carousel/CTD with 24 12L GO-FLO bottles (and 14 spares), GO-FLO bottles.

Instrument Type

Generic Name: CTD Sea-Bird SBE 911plus

Acronym: CTD SBE 911plus

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0058/

Generic Description:

The Sea-Bird SBE 911 plus is a type of CTD instrument package for continuous measurement of conductivity, temperature and pressure. The SBE 911 plus 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 9 plus and SBE 11 plus is called a SBE 911 plus. The SBE 9 plus uses Sea-Bird's standard modular temperature and conductivity sensors (SBE 3 plus and SBE 4). The SBE 9 plus 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

GO-FLO Teflon Trace Metal Bottle

Supplied Name:

Supplied Description:

CTD bottle data from 30-ODF/SIOR (Ocean Data Facility 12 bottle, 30 liter Niskin rosette) and GEOTRACES Clean Carousel sampling system (GTC).

Instrument Type

Generic Name: GO-FLO Teflon Trace Metal Bottle

Acronym: GO-FLO Teflon TM

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/30/

Generic Description:

GO-FLO Teflon-lined Trace Metal free sampling bottles are used for collecting water samples for trace metal, nutrient and pigment analysis. The GO-FLO sampling bottle is designed specifically to avoid sample contamination at the surface, internal spring contamination, loss of sample on deck (internal seals), and exchange of water from different depths.

Niskin bottle

Supplied Name:

Supplied Description:

Instrument Type

Generic Name: Niskin bottle

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0412/

Generic Description:

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.

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
cruise_id	cruise identification	unitless	cruise_name
EXPOCODE	expedition code assigned by the CCHDO: NODCShipCodeYearMonthDay	unitless	EXPOCODE
SECT_ID	cruise section identification number	unitless	cruise_name
STNNBR	station number	unitless	station
CASTNO	cast number	unitless	cast
GEOTRC_EVENTNO	GEOTRACES Event Number	unitless	event
GEOTRC_SAMPNO	GEOTRACES Sample Number	unitless	sample
SAMPNO	sequential sample number within a cast	unitless	sample
BTLNBR	Bottle Number	unitless	bottle
BTLNBR_FLAG_W	Bottle Quality Flag	unitless	flag
DATE	Station Date (GMT); format is YYYYMMDD	unitless	date
TIME	Station Time (GMT); format is HHMM	unitless	time
ISO_DateTime_UTC	Date/Time (ISO8601 formatted); format is YYYY-MM-DDTHH:MM:SS[.xx]Z	unitless	ISO_DateTime_UTC
LATITUDE	Station Latitude (South is negative)	decimal degrees	lat
LONGITUDE	Station Longitude (West is negative)	decimal degrees	lon
CTDPRS	CTD pressure	decibars	press
CTDDEPTH	CTD depth: Fofonoff-Millard depth (non-integrated; also used by SBE)	meters	depth
CTDTMP	CTD temperature; ITS-90	degrees celsius	temp
CTDSAL	CTD salinity	PSS-78	sal
CTDSAL_FLAG_W	CTD salinity quality flag	unitless	flag
SALNTY	salinity	PSS-78	sal
SALNTY_FLAG_W	salinity quality flag	unitless	flag
SALTREF	salinity reference ??	G/KG	no_bcodmo_term
SALTREF_FLAG_W	salinity reference quality flag	unitless	flag
CTDOXY	CTD oxygen	UMOL/KG	O2
CTDOXY_FLAG_W	CTD oxygen quality flag	unitless	flag
BTMDEPTH	Bottom Depth	meters corrected	depth_w
SILCAT	SILCAT	UMOL/KG	SiO4
SILCAT_FLAG_W	SILCAT quality flag	unitless	flag
NITRAT	nitrate	UMOL/KG	NO3
NITRAT_FLAG_W	nitrate quality flag	unitless	flag
NITRIT	nitrite	UMOL/KG	NO2
NITRIT_FLAG_W	nitrite quality flag	unitless	flag
PHSPHT	phosphate	UMOL/KG	PO4
PHSPHT_FLAG_W	phosphate quality flag	unitless	flag
AL_UH	AL Uhawaii lab	NMOL/L	no_bcodmo_term
AL_UH_FLAG_W	AL_UH quality flag	unitless	flag
MN_UH	MN Uhawaii lab	NMOL/L	no_bcodmo_term
MN_UH_FLAG_W	MN_UH quality flag	unitless	flag
FE_UH	FE Uhawaii lab	NMOL/L	no_bcodmo_term
FE_UH_FLAG_W	FE_UH quality flag	unitless	flag
HG_TOTAL	HG total	PMOL/L	no_bcodmo_term
HG_TOTAL_FLAG_W	HG total quality flag	unitless	flag
HG_ELEMENTAL	HG elemental	PMOL/L	no_bcodmo_term
HG_ELEMENTAL_FLAG_W	HG elemental quality flag	unitless	flag
HG_DM	HG DM	PMOL/L	no_bcodmo_term
HG_DM_FLAG_W	HG DM quality flag	unitless	flag
COLLOIDAL_HG	colloidal HG	PMOL/L	no_bcodmo_term
COLLOIDAL_HG_FLAG_W	colloidal HG quality flag	unitless	flag
ZN_DISS	ZN dissolved	NMOL/KG	no_bcodmo_term
ZN_DISS_FLAG_W	ZN dissolved quality flag	unitless	flag
BTL_DATE	Bottle Date (GMT); format is YYYYMMDD	years days months	date
BTL_TIME	Bottle Time (GMT); format is HHMM	unitless	time
BTL_LAT	Bottle Latitude (South is negative)	decimal degrees	lat
BTL_LON	Bottle Longitude (West is negative)	decimal degrees	lon
ODF_CTDPRS	ODF CTD PRESSURE	decibars	press
ODF_CTDDEPTH	ODF CTD depth	meters	depth