CTD_SurfaceSF6

Data Object CTD - Surface SF6

contact PIs:

name	title
Dr Edward Abraham	Principal Investigator
Dr C.S. Law	Co-Principal Investigator
Dr Doug Mackie	Contact

Dataset 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.

Acquisition description

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.

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"

Field Names List

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

Platforms List

R/V Tangaroa 61TG_3052

Instruments List

CTD Seabird 911:
NIWA's Seabird 911plus CTD and related instrumentation

This document is created from the content of the BCO-DMO metadata database. 2010-03-17 21:29:20

info app: /home/bco/dbase-v2 v.100108 CLC
Data URL: http://data.bco-dmo.org/jg/serv/BCO/Fe_Synthesis/SOIREE/61TG_3052/CTD_SurfaceSF6.