Dataset: CTD - Profiles

Name: CTD profiles from R/V Tangaroa cruise 61TG_3052 in the Southern Ocean in 1999 (SOIREE project)
Published: 2008-09-11
Keywords: oceans

Cite This Dataset

Spatial Extent: N:-45.6471 E:171.0708 S:-62.0003 W:138.9933

Project:

Southern Ocean Iron Release Experiment (SOIREE)

Program:

Iron Synthesis (FeSynth)

Principal Investigator:

Dr Matt Walkington (New Zealand National Institute of Water and Atmospheric Research, NIWA)

Co-Principal Investigator:

Dr Edward Abraham (New Zealand National Institute of Water and Atmospheric Research, NIWA)

Contact:

Doug Mackie (University of Otago)

BCO-DMO Data Manager:

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

Version:

11September2008

Version Date:

2008-09-11

Validated:

Yes

Current State:

Final no updates expected

CTD profiles from R/V Tangaroa cruise 61TG_3052 in the Southern Ocean in 1999 (SOIREE project)

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Description

SOIREE CTD profile data (pressure, temperature, salinity)

Methods & Sampling

See SOIREE Preliminary Voyage Report

CTD data collection for SOIREE used NIWA's Seabird 911plus CTD and related

instrumentation - operated in its standard configuration, and according to standard procedures.

Data Processing Description

See SOIREE Preliminary Voyage Report

CTD data processing followed standard procedures.

These processes routinely result in pressure, temperature, salinity and

dissolved oxygen data that conform to WOCE Hydrographic Programme standards

(see WOCE HP Operations Manual WHP 91-1).
with the measurements referenced
to
(calibrated against) their respective international standards.

For SOIREE, the main exception was that there was no water-sample dissolved

oxygen data collected during the cruise. This meant that the dissolved O2

data could not be reliably calibrated to WOCE standards and that they are

only crudely indicative. It would be possible to somewhat further enhance

these dissolved O2 data by applying a calibration from a previous or

following cruise that used the same sensor.

BCO-DMO Processing Notes

Generated from original .mat files provided on the Deep-Sea Research II 48 (2001) accompanying CD-Rom

Matlab scripts:
Format_SOIREE_CTDmat_Files_with_DerivedParams.m v11July2008
Output_CTD_HeaderFile_With_Event.m v17July2008
used to reformat the CTD data and generate the header file

BCO-DMO Edits

- Calculated Potential Density, Potential Temperature and depth as derived parameters

- Corrected o/p formats of some parameters to conform to BCO-DMO convention

- Outputted header files to a separate file and eliminated them from the data o/p files

Data Files

File
CTD.csv (Comma Separated Values (.csv), 1.31 MB) MD5:fbc3b4e779d36289f66f0a86671b6809 Primary data file for dataset ID 2833

More Information about this dataset

Funding Sources

None available yet

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
61TG_3052	SOIREE	1999-01-31	R/V Tangaroa	Philip W. Boyd (Chief Scientist)	data info

Instruments

CTD Sea-Bird 911

Supplied Name: CTD Seabird 911

Supplied Description:

NIWA's Seabird 911plus CTD and related instrumentation

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	Cruise Station Id	text	station
date_start	Start Date of Cast (GMT)	YYYYMMDD	date_begin
lon	longitude, negative denotes West	decimal degrees	lon
lat	latitude, negative denotes South	decimal degrees	lat
time_start	Start Time of Cast (GMT)	HHMM	time_begin
cast	CTD cast number	integer	cast
press	CTD Pressure	decibars	press
temp	CTD Temperature (ITS-90)	degrees celsius	temp
sal	CTD Salinity (PSS-78)	dimensionless	sal
date_end	End Date of Cast (GMT)	YYYYMMDD	date_end
time_end	End Time of Cast (GMT)	HHMM	time_end
depth	CTD depth (derived parameter)	meters	depth
potemp	Potential Temperature (ITS-90) (derived parameter)	degrees celsius	potemp
sigma_0	Potential Density (derived parameter)	kilograms/meter^3	sigma_0
trans	Transmission	percentage	trans
PAR	PAR	volts	PAR
fluor	Fluorescence	volts	fluor

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Dataset: CTD - Profiles