Dataset: Niskin bottle hydrography
Deployment: NBP0601

hydrographic measurements from Niskin bottle samples

Principal Investigator:

Giacomo DiTullio (College of Charleston - Hollings Marine Lab, CoC-HML)

BCO-DMO Data Manager:

Theresa McKee (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

Controls of Ross Sea Algal Community Structure (CORSACS)

Current State:

Final no updates expected

Version:

09 September 2010

Deployment Synonyms:

CORSACS I

Version Date:

2010-09-09

Data URL:

https://osprey.bco-dmo.org/dataset-deployment/452645/data

Expand/Collapse All

Description

Water-column nutrients and CTD data from CORSACS 1 cruise (NBP-0601) and CORSACS2 cruise (NBP-0608) to the Ross Sea in 2005 and 2006.

Collection of these data was funded by the NSF Office of Polar Programs as "Collaborative Research: Interactive Effects of Iron, Light and Carbon Dioxide on Phytoplankton Community Dynamics in the Ross Sea", NSF Award OPP-0338097.

Methods & Sampling

Dataset acquisition description

Hydrographic reports on sampling and analytical methodology for both cruises can be found at the following website:

ftp://pangea.stanford.edu/pub/dunbar/CORSACSHydrographyReports/

Cruise Report Summary

Reported here are Conductivity, Temperature, Depth (CTD), C system, oxygen, and nutrient data from the CORSACS I & II cruises, which were collected aboard the Research Vessel Ice Breaker (RVIB) Nathaniel B. Palmer.

The RVIB Nathaniel B. Palmer is equipped with a SeaBird Electronics Model SBE- 911plus conductivity, temperature, and depth instrument, which is mounted on a SeaBird, epoxy coated 24-bottle rosette sampler. The sampler is equipped with a SeaBird pylon and 10-liter Bullister bottles.

Water samples were drawn in accord with Joint Global Ocean Flux Study (JGOFS) protocols [SCOR, 1994]and Nutrient samples were analyzed on a Lachat Quickchem FIA+, series 8000, a bench-top instrument. High precision pH determinations were made following the spectrophotometric method described in SOP7 of Dickson and Goyet (1994).

Salinity samples were analyzed using a Guildline 8400 Autosal four-electrode salinometer (S/N NSF 04504) aboard the RVIB Nathaniel B. Palmer. Discrete dissolved oxygen (DO) measurements were made with a Lamont-Doherty Earth Observatory amperometric oxygen titrator titration system [Langdon, 2003; Culberson and Huang, 1987].

Samples for Carbon analysis were collected in accordance with JGOFS protocols (Dickson and Goyet 1994) and were measured by infrared absorption analysis of CO2 in a nitrogen gas stream using an automated injection system connected to an infrared gas analyzer (LI-COR LI7000).

Important note: cast 35 on NBP06-08 was a 'ghost' CTD, that is no bottle samples were drawn. Some folks didn't realize that, so some data sets list stations 36 through 36+N as stations 35 through 35+N, where N is some unspecified number of casts, not always all remaining casts. This means it is very difficult to match measurements from other data sets with the hydro bottle data.

Deployment-specific acquisition description

CORSACS I

The RVIB Nathaniel B. Palmer departed Lyttleton, New Zealand at December 18, 2005 and arrived at station #000 on December 24, 2005 at 00:07 UTC. The cruise track proceeded into the Ross Sea polynya where a total of 102 hydrographic stations were occupied through late January, 2006. Sampling and analytical methods are described in full in the CORSACS-I Cruise Report CORSACS I Cruise Report

Data Processing Description

Dataset Processing Description

BCO-DMO processing note:
2010-Sep-09: NBP0601 station 21 year_day value corrected from 366.01xx to 1.01xx (this parameter was named Julian in the original contributed Excel file)

More information about this dataset deployment

Funding

Award Number	Funding Source
OPP-0338097	NSF Office of Polar Programs (formerly NSF PLR)

Instruments

Autosal salinometer

Supplied Description:

Salinity samples were analyzed using a Guildline 8400 Autosal four-electrode
salinometer (S/N NSF 04504) aboard the RVIB Nathaniel B. Palmer.

Instrument Type

Generic Name: Autosal salinometer

Acronym: salinometer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB30/

Generic Description:

The salinometer is an instrument for measuring the salinity of a water sample.

CTD Sea-Bird 911

Supplied Description:

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.

LI-COR LI-7000 Gas Analyzer

Supplied Description:

Instrument Type

Generic Name: LI-COR LI-7000 Gas Analyzer

Acronym: LI-COR LI-7000

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/382/

Generic Description:

The LI-7000 CO2/H2O Gas Analyzer is a high performance, dual cell, differential gas analyzer. It was designed to expand on the capabilities of the LI-6262 CO2/ H2O Gas Analyzer. A dichroic beam splitter at the end of the optical path provides radiation to two separate detectors, one filtered to detect radiation absorption of CO2 and the other to detect absorption by H2O. The two separate detectors measure infrared absorption by CO2 and H2O in the same gas stream. The LI-7000 CO2/ H2O Gas Analyzer is a differential analyzer, in which a known concentration (which can be zero) gas is put in the reference cell, and an unknown gas is put in the sample cell.

Niskin bottle

Supplied Name: Niskin Bottle

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.

Oyxgen Titrator -Langdon

Supplied Description:

Discrete dissolved oxygen (DO) measurements were made with a Lamont-Doherty Earth Observatory amperometric oxygen titrator titration system [Langdon, 2003; Culberson and Huang, 1987].

Instrument Type

Generic Name: Oyxgen Titrator -Langdon

Acronym: O2 titrator -Langdon

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB12/

Generic Description:

A Langdon Oyxgen Titrator is an amperometric oxygen titration system developed to measure dissolved oxygen in seawater. The device uses a conventional polarographic electrode in connection with chronoamperometry to overcome many of the problems limiting the performance of oxygen electrodes. Reproducibility is typically better than +/- 0.8 micromolar and essentially drift-free for several weeks. A microcomputer controls all phases of the measuring process: pulse generation, data acquisition, reduction, and storage. Software is used to correct sensor output for temperature dependence and an activity coefficient, a function of temperature and salinity, is computed to correct for salinity. (Langdon, 1984. Deep Sea Research Part A. Oceanographic Research Papers, Volume 31, Issue 11, pp. 1357-1367; Culberson and Huang, 1987. Automated amperometric oxygen titration. Deep Sea Res. 34:875-880).

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
cruise_id	ship's cruise designation	dimensionless	cruise_id
date_local	local date of sampling	YYYYMMDD	date_local
time_local	local time of sampling	hhmm	time_local
year_day	day of year for a specified year as a decimal	dimensionless	yrday_local
lat	latitude; North is positive, South is negative	decimal degrees	lat
lon	longitude; East is positive, West is negative	decimal degrees	lon
sta	station number	dimensionless	sta
bot	bottle number	dimensionless	bot
sample_label	sample number composed of cruise, station and bottle	dimensionless	sample
depth	depth	meters	depth
temp	temperature	degrees Celsius	temp
cond	conductivity	Siemens per meter	cond
sal	salinity from CTD sensor	practical salinity units (PSU)	sal
sal_bottle	salinity from bottle by Autosal system	practical salinity units (PSU)	sal_bottle
sal_diff	salinity difference; Autosal minus CTD sensor	practical salinity units (PSU)	no_bcodmo_term
sal_merged	salinity merged from Autosal and CTD sensor	practical salinity units (PSU)	no_bcodmo_term
sigma_t	sigma-t density	kilograms per meter cubed - 1000	sigma_t
O2sat	oxygen saturation	milliliters per liter	O2sat
O2_volts	oxygen from CTD sensor	volts	O2
O2	oxygen from CTD sensor	milliliters per liter	O2
O2_bot	oxygen; from bottle by Winkler method	milliliters per liter	O2_ml_L
O2_diff	oxygen difference; Winkler method minus CTD sensor	milliliters per liter	no_bcodmo_term
O2_umol_kg	oxygen; from CTD sensor	micromoles per kilogram	O2_umol_kg
fluor	fluorescence, FIECO-AFL	volts	fluor
PAR	Photosynthetically Available Radiation (PAR)	microeinsteins per meter2 per second	PAR
PAR_surface	surface PAR	microeinsteins per meter2 per second	PAR
DIC	dissolved inorganic Carbon	micromoles per kilogram	DIC
pH	pH; by colorimetric analysis	pH units	pH_sw
DIC_dC13	dissolved inorganic Carbon from C13	per mil (ppt)	no_bcodmo_term
PO4	dissolved inorganic phosphate concentration	micromoles per liter	PO4
NO2	dissolved nitrite concentration	micromoles per liter	NO2
NO3_NO2	dissolved nitrate plus nitrite concentration	micromoles per liter	NO3_NO2
NH4	dissolved ammonium concentration	micromoles per liter	NH4
Si_acid	dissolved silicic acid concentration	micromoles per liter	Si_acid
NO3	dissolved nitrate concentration	micromoles per liter	NO3
PON	Particulate Organic Nitrogen	percent	PON
POC	Particulate Organic Carbon	percent	POC
dN15_POM	Nitrogen 15 to Nitrogen 14 ratio	per mil (ppt)	dN15_POM
dC13_POM	Carbon 13 to Carbon 12 ratio	per mil (ppt)	dC13_POM
C_to_N	carbon to nitrogen ratio	dimensionless	C_to_N
PON_ug_L	Particulate Organic Nitrogen	micrograms per liter	PON
POC_ug_L	Particulate Organic Carbon	micrograms per liter	POC
temp_0	temperature; CTD sensor 0	degrees Celsius	temp
temp_1	temperature; CTD sensor 1	degrees Celsius	temp2
potemp_1	potential temperature; CTD sensor 1	degrees Celsius	potemp
cond_0	conductivity; CTD sensor 0	Siemens per meter	cond
cond_1	conductivity; CTD sensor 1	Siemens per meter	cond2
O2_volts_0	oxygen in volts; CTD sensor 0	volts	no_bcodmo_term
O2_volts_1	oxygen; CTD sensor 1	volts	no_bcodmo_term
O2_0	oxygen; CTD sensor 0	milliliters per liter	O2
O2_1	oxygen; CTD sensor 1	milliliters per liter	O2
O2_0_umol_kg	dissolved oxygen; CTD sensor 0 (primary)	micromoles per kilogram	O2_umol_kg
O2_1_umol_kg	oxygen; CTD sensor 1	micromoles per kilogram	O2_umol_kg
O2_1_PS	unknown	unknown	no_bcodmo_term

Database

Contribute Data

Dataset: Niskin bottle hydrography
Deployment: NBP0601

Dataset acquisition description

Cruise Report Summary

Deployment-specific acquisition description

CORSACS I

Dataset Processing Description

Database

Contribute Data

Dataset: Niskin bottle hydrographyDeployment: NBP0601

Dataset acquisition description

Cruise Report Summary

Deployment-specific acquisition description

CORSACS I

Dataset Processing Description

Dataset: Niskin bottle hydrography
Deployment: NBP0601