Dataset: SF6 - CTD Surface SF6

Name: Surface Sulphur Hexafluoride (SF6) values at start and finish of CTD casts from R/V Tangaroa cruise 61TG_3052 in the Southern Ocean in 1999 (SOIREE project)
Published: 2009-08-12
Keywords: oceans

Cite This Dataset

Spatial Extent: N:-60.8805 E:141.08367 S:-61.999 W:138.99217

Project:

Southern Ocean Iron Release Experiment (SOIREE)

Program:

Iron Synthesis (FeSynth)

Principal Investigator:

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

Co-Principal Investigator:

C.S. Law (Plymouth Marine Laboratory, PML)

Contact:

Doug Mackie (University of Otago)

BCO-DMO Data Manager:

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

Version:

12August2009

Version Date:

2009-08-12

Validated:

Yes

Current State:

Final no updates expected

Surface Sulphur Hexafluoride (SF6) values at start and finish of CTD casts from R/V Tangaroa cruise 61TG_3052 in the Southern Ocean in 1999 (SOIREE project)

Expand/Collapse All

Description

SOIREE Surface SF6 Values at CTD Times

Comments preserved from the original file:

This table gives the values of the underway SF6 at the

start and finish times of each CTD down and up cast.

A value of -1 indicates either that no SF6 data is

available at that time, or that the closest measurements

were separated by more than 15minutes, and so the data
could not be reliably interpolated.

The percentage columns are the SF6 values expressed as a

percentage of the maximum concentration during the previous

evening's mapping.

The upcast column is 0 for downcasts and 1 for upcasts.

Methods & Sampling

See SOIREE Preliminary Voyage Report
See comments preserved from original file in dataset description as well

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
See comments preserved from original file in dataset description as well

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 ctd_sf6.xls file provided on the

Deep-Sea Research II 48 (2001) accompanying CD-Rom

BCO-DMO Edits

- parameter names modified to conform to BCO-DMO convention

- added 'T' to CTD Station number for compatibility with events in other spreadsheets

- date, time. Lat, lon added from SOIREE_Stations_MasterStationList.xls using GMT dates/times

- "-1" No data or Bad data flag changed to BCO-DMO standard of "nd"

Data Files

File
CTD_SurfaceSF6.csv (Comma Separated Values (.csv), 10.63 KB) MD5:12af13d7c8f8e47d7b07cbcd42a22cc2 Primary data file for dataset ID 2831

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	Station Id (Text String)	text	station
date	date	YYYYMMDD	date
lon	longitude, negative denotes West	decimal degrees	lon
lat	latitude, negative denotes South	decimal degrees	lat
time	time	HHMM	time
cast	CTD cast number	integer	cast
Upcast	Up/Down Cast Flag (0=Down, 1=Up)	integer	no_bcodmo_term
SF6_Start	SF6 at Start	fMol	no_bcodmo_term
SF6_Start_percentage	SF6 Percentage at Start	percentage	no_bcodmo_term
SF6_Finish	SF6 at Finish	fMol	no_bcodmo_term
SF6_Finish_percentage	SF6 Percentage at Finish	percentage	no_bcodmo_term

Status message

Database

Contribute Data

Dataset: SF6 - CTD Surface SF6