Dataset: CTD - Water Column DOC Chl PN PC PON POC

Name: Water column DOC, Chl, PN, PC, PON, and POC data from CTD casts from R/V Tangaroa cruise VDT0410 in the South East of New Zealand, S.W. Bounty Trough in 2004 (SAGE project)
Published: 2010-04-01
Keywords: oceans

Cite This Dataset

Spatial Extent: N:-41.188 E:178.477 S:-47.0015 W:171.74367

Project:

Surface-Ocean Lower-Atmosphere Studies Air-Sea Gas Exchange (Experiment) (SAGE)

Program:

Iron Synthesis (FeSynth)

United States Surface Ocean Lower Atmosphere Study (U.S. SOLAS)

Principal Investigator:

Scott Nodder (New Zealand National Institute of Water and Atmospheric Research, NIWA)

BCO-DMO Data Manager:

Stephen R. Gegg (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

01April2010

Version Date:

2010-04-01

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Water column DOC, Chl, PN, PC, PON, and POC data from CTD casts from R/V Tangaroa cruise VDT0410 in the South East of New Zealand, S.W. Bounty Trough in 2004 (SAGE project)

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Description

Water column DOC, Chl, PN, PC, PON, POC data from CTD casts

A summary of methods used and detection limits is below under 'Data Processing Description'.

Methods & Sampling

Refer to SAGE Voyage Report

CTD-related instrumentation consisted of:
- a Seabird Electronics (SBE) 911plus CTD with:
- SBE-5 pumped SBE-3 temperature, SBE-4 conductivity and SBE-43 dissolved oxygen
sensors.
- SBE-5 pumped secondary SBE-3 temperature and SBE-4 conductivity sensors.
- Seapoint Sensors, Inc. SCF chlorophyll fluorometer.
- 25-cm Wetlabs C-star transmissometer.
- Biosherical Instruments Inc. photosynthetic ally active radiation (PAR) sensor, model
QSP200L4S.
- Datasonics sonar altimeter, model PSA-900D.
- a SBE 32 24x10-litre Carousel water sampler.
- Ocean Test Equipment Standard BES external-spring Niskin-type water-sampling bottles.
- Salinity sample bottles.
- CTD winch with 10-km 10.5-mm single-core seacable.

Performance: With the exception of issues noted below, the CTD-related instrumentation apparently
functioned to specification and was operated essentially according to accepted practices for the duration of
the voyage. A total of 85 one-cast CTD stations were completed, labelled u3502 to u3743.

PAR Sensor: The initial CTD PAR sensor experienced an intermittent fault that manifested as a time
variable offset, both cast to cast and, less evidently, within casts. It was eventually replaced with a formally
identical spare unit for station u3719 cast 1 and subsequent casts.

Secondary Conductivity Sensor: The initial secondary conductivity sensor eventually developed a clear
fault (during station u3740 cast 1). It was replaced with a formally identical spare unit for station u3740 cast
1 and subsequent casts. The development of this fault was perhaps somewhat progressive, as possibly
indicated by slight shifts in the primary-secondary conductivity difference on casts before station u3740 cast 1.

Data Processing Description

Water column DOC, Chl, PN, PC, PON, POC data from CTD casts

NIWA HAMILTON INORGANIC CHEMISTRY LABORATORY	
											
CLIENT :Scott Nodder		LOT NUMBER :	2004000218	CHECKED :	MC
NIWA Wellington		        SF NUMBER :	KX 7303		APPROVED :	MC	
JOB NUMBER :	OEBI032		REPORT DATE :	5/10/2006	
JOB :	TAN 0403	
								
A summary of methods used and detection limits is as follows.

Parameter                                                             Description			                                 Detection Limit                     Method	
		
Chlorophyll a(Chla-Av)                            Acetone pigment extraction, spectrofluorometric measurement.		0	A*10200H
Chlorophyll a(Chla-2)                             Acetone pigment extraction, spectrofluorometric measurement.		0	A*10200H
Chlorophyll a(Chla-1)                             Acetone pigment extraction, spectrofluorometric measurement.		0	A*10200H
Chlorophyll a(Chla)                               Acetone pigment extraction, spectrofluorometric measurement.		0	A*10200H
Dissolved Organic Carbon(DOC)                     Dissolved Organic Carbon(low level) using TOC analyser			            100			APHA5310B
Particulate Nitrogen Filter 1(PN-1)		          Catalytic comb @900°C, sep, TCD, CE Instruments C/N analyser		2			MAM, 01-1090	
Particulate Carbon Filter 2(PC-2)		          Catalytic comb @900°C, sep, TCD, CE Instruments C/N analyser		1			MAM, 01-1090
Particulate Carbon Filter 1(PC-1)		          Catalytic comb @900°C, sep, TCD, CE Instruments C/N analyser		1			MAM, 01-1090
Particulate Nitrogen Filter 2(PN-2)		          Catalytic comb @900°C, sep, TCD, CE Instruments C/N analyser		2			MAM, 01-1090
Particulate Organic Carbon Filter 1(POC-1)	      Catalytic comb @900°C, sep, TCD, CE Instruments C/N analyser		1			MAM, 01-1090
Particulate Organic Nitrogen Filter 2(PON-2)	  Catalytic comb @900°C, sep, TCD, CE Instruments C/N analyser		2			MAM, 01-1090	
Particulate Organic Nitrogen Filter 1(PON-1)	  Catalytic comb @900°C, sep, TCD, CE Instruments C/N analyser		2			MAM, 01-1090	
Particulate Organic Carbon Filter 2(POC-2)	      Catalytic comb @900°C, sep, TCD, CE Instruments C/N analyser		1			MAM, 01-1090	
Particulate Phosphorus(PartP-2)			          Acid digest, NH4-N, DRP auto analysis					0.1		Searle
Particulate Phosphorus(PartP-1)			          Acid digest, NH4-N, DRP auto analysis					0.1			Searle
Particulate Nitrogen(PartN-2)			          Acid digest, NH4-N, DRP auto analysis					0.1		    Searle
Particulate Nitrogen(PartN-1)			          Acid digest, NH4-N, DRP auto analysis					0.1			Searle
													
These samples were analysed as received at the laboratory.

BCO-DMO Processing

Generated from original spreadsheet TAN0403_water col_chlPOCPNPPDOC.xls

BCO-DMO Edits
- station_CTD, date, time, lat, lon, SAGEtime and Patch merged in from CTD station data
- 'nd' added to blank cells
- lat/lon for station U740 from position for Northern Biophysical Mooring in voyage report and is approximate
- no date/time for station U740 located to date, date of 20040414 is estimated
- U741 (U3741) has no date, time or position
- U741 (U23741) is in SAGE_watercol_chlPOCPNPPDOC.xls and SAGE_BCODMO_ARCHER_DMS.xls
- U741 (U3741) not found in any other data
- parameter names modified to conform to BCO-DMO convention

Data Files

File
CTD_WaterCol.csv (Comma Separated Values (.csv), 29.86 KB) MD5:fc6bb7e32708f5c64b72a1f20397b431 Primary data file for dataset ID 3329

More Information about this dataset

Funding Sources

Funding Source	Award Number
National Science Foundation	unknown SAGE NSF
New Zealand International Science and Technology Fund	unknown SAGE ISAT
New Zealand Foundation for Research, Science and Technology	C01X0204
New Zealand Foundation for Research, Science and Technology	C01X0223

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
VDT0410	SOLAS-ANZ	2004-03-17	R/V Tangaroa	Mike Harvey (Chief Scientist)	data info

Instruments

CTD Sea-Bird 911

Supplied Name: CTD Seabird 911

Supplied Description:

CTD-related instrumentation consisted of:

- a Seabird Electronics (SBE) 911plus CTD with:

- SBE-5 pumped SBE-3 temperature, SBE-4 conductivity and SBE-43 dissolved oxygen

sensors.

- SBE-5 pumped secondary SBE-3 temperature and SBE-4 conductivity sensors.

- Seapoint Sensors, Inc. SCF chlorophyll fluorometer.

- 25-cm Wetlabs C-star transmissometer.

- Biosherical Instruments Inc. photosynthetic ally active radiation (PAR) sensor, model

QSP200L4S.

- Datasonics sonar altimeter, model PSA-900D.

- a SBE 32 24x10-litre Carousel water sampler.

- Ocean Test Equipment Standard BES external-spring Niskin-type water-sampling bottles.

- Salinity sample bottles.

- CTD winch with 10-km 10.5-mm single-core seacable.

Instrument Type

Generic Name: CTD Sea-Bird 911

Acronym: CTD SBE 911

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0035/

Generic Description:

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.

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
station_CTD	text	text	no_bcodmo_term
date_NZST	YYYYMMDD	YYYYMMDD	no_bcodmo_term
time_local	HHMM	HHMM	time_local
SAGEtime	Custom project time pre/post 25March2004 19:00 Local Time (NZST)	dd.xxxx	no_bcodmo_term
lon	Station longitude (West is negative)	decimal degrees	lon
lat	Station latitude (South is negative)	decimal degrees	lat
NIWA_ID	NIWA Sample ID	text	no_bcodmo_term
Client_ID	Client Sample ID (cast id + depth in m)	text	no_bcodmo_term
depth	Sample Depth	meters	depth
Date_Collected	Date Sample Collected	YYYYMMDD	no_bcodmo_term
Date_Received	Date Sample Received	YYYYMMDD	no_bcodmo_term
Patch	Patch designation (In/Out/Pre)	text	no_bcodmo_term
DOC	Dissolved Organic Carbon(DOC) Dissolved Organic Carbon(low level) using TOC analyser	mg/m3	DOC
Chla	Chlorophyll a(Chla) Acetone pigment extraction; spectrofluorometric measurement.	mg/m3	no_bcodmo_term
Chla_1	Chlorophyll a(Chla_1) Replicate 1 Acetone pigment extraction; spectrofluorometric measurement	mg/m3	no_bcodmo_term
Chla_2	Chlorophyll a(Chla_2) Replicate 2 Acetone pigment extraction; spectrofluorometric measurement	mg/m3	no_bcodmo_term
Chla_Av	Chlorophyll a (Chla_Av) Acetone pigment extraction; spectrofluorometric measurement	mg/m3	no_bcodmo_term
PN_1	Particulate Nitrogen Filter 1 (PN_1) Catalytic comb @900°C; sep; TCD; CE Instruments C/N analyser	mg/m3	no_bcodmo_term
PN_2	Particulate Nitrogen Filter 2 (PN_2) Catalytic comb @900°C; sep; TCD; CE Instruments C/N analyser	mg/m3	no_bcodmo_term
PC_1	Particulate Carbon Filter 1 (PC_1) Catalytic comb @900°C; sep; TCD; CE Instruments C/N analyser	mg/m3	no_bcodmo_term
PC_2	Particulate Carbon Filter 2 (PC_2) Catalytic comb @900°C; sep; TCD; CE Instruments C/N analyser	mg/m3	no_bcodmo_term
PON_1	Particulate Organic Nitrogen Filter 1 (PON_1) Catalytic comb @900°C; sep; TCD; CE Instruments C/N analyser	mg/m3	no_bcodmo_term
PON_2	Particulate Organic Nitrogen Filter 2 (PON_2) Catalytic comb @900°C; sep; TCD; CE Instruments C/N analyser	mg/m3	no_bcodmo_term
AV_PON	Average Particulate Organic Nitrogen	mg/m3	no_bcodmo_term
POC_1	Particulate Organic Carbon Filter 1 (POC_1) Catalytic comb @900°C; sep; TCD; CE Instruments C/N analyser	mg/m3	no_bcodmo_term
POC_2	Particulate Organic Carbon Filter 2 (POC_2) Catalytic comb @900°C; sep; TCD; CE Instruments C/N analyser	mg/m3	no_bcodmo_term
AV_POC_mg	Average POC mg/m3	mg/m3	no_bcodmo_term
AV_POC_mmol	Average POC mmol/m3	mmol/m3	no_bcodmo_term
Int_POC	Int POC	mg/m2	no_bcodmo_term
AV_C_to_N	Average C:N	molar	no_bcodmo_term
PartN_1	Particulate Nitrogen (PartN_1) Acid digest; NH4-N; DRP auto analysis	mg/m3	no_bcodmo_term
PartN_2	Particulate Nitrogen (PartN_2) Acid digest; NH4-N; DRP auto analysis	mg/m3	no_bcodmo_term
AV_PN	Average Particulate Nitrogen	mg/m3	no_bcodmo_term
PartP_1	Particulate Phosphorus (PartP_1) Acid digest; NH4-N; DRP auto analysis	mg/m3	no_bcodmo_term
PartP_2	Particulate Phosphorus (PartP_2) Acid digest; NH4-N; DRP auto analysis	mg/m3	no_bcodmo_term

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Dataset: CTD - Water Column DOC Chl PN PC PON POC