Dataset: CTD_TMR_SFX_RR

Name: TMR CTD pressure, temperature, salinity profiles from R/V Roger Revelle cruise DRFT08RR from the Southern Ocean, south of New Zealand in 2002 (SOFeX project)
Published: 2006-03-02
Keywords: oceans

Cite This Dataset

Spatial Extent: N:-54.093 E:-169.242 S:-66.602 W:-172.038

Project:

Southern Ocean Iron Experiment (SOFeX)

Program:

Ocean Carbon and Biogeochemistry (OCB)

Iron Synthesis (FeSynth)

Principal Investigator:

Ken Johnson (Monterey Bay Aquarium Research Institute, MBARI)

BCO-DMO Data Manager:

Cynthia L. Chandler (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

2 March 2006

Version Date:

2006-03-02

Validated:

Yes

Current State:

Final no updates expected

TMR CTD pressure, temperature, salinity profiles from R/V Roger Revelle cruise DRFT08RR from the Southern Ocean, south of New Zealand in 2002 (SOFeX project)

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Description

CTD pressure, temperature, salinity profiles from
Trace Metal Clean Rosette (TMR) CTD instrument package

Methods & Sampling

 dates:           11 January 2002 to 10 February 2002  (20020111-20020210)
 location:        N: -54.093  S: -66.602  W: -172.038  E: -169.242 
 project/cruise:  SOFeX/RR

Data Processing Description

 DMO notes: original version prepared from CTD (TMR CTD) casts
 Added to OCB: 10 January 2006 by Cyndy Chandler (cchandler@whoi.edu)
 
 Questions:
 are times UTC or GMT ?
 still unsure about some user sensors

10 January 2006: Prepared for OCB data system by Terry McKee (PO Dept, WHOI) and Cyndy Chandler, OCB DMO (WHOI).

Data were processed using the standard set of Seabird utilities,
to generate final 1-decibar pressure sorted downtrace files for all CTD casts.
All final processed *.asc CTD files were downloaded by the OCB DMO
in December 2005 from the SOFeX web site:

http://www.mbari.org/SOFeX/Revelle_Data/Revelle_Station_Data/Revelle_TMR_CTD_data.htm

The event number, date, time, latitude
and longitude position information were taken from the *.hdr CTD header files.
For TMR1 station 7, the latitude may have been entered incorrectly during data acquisition
(55 °W) but was not changed to be consistent with the
cruise Activity Log (56 °W).

Final CTD station header record showing history of processing steps:

TMR-CTD station 7

Final CTD station configuration (con report) files were not provided with .asc files.

MATLAB data processing scripts:
Physical properties of seawater function was used to compute potential density:: PhyPropSW sw_pden.m

Data Files

File
ctd-TMR.csv (Comma Separated Values (.csv), 428.07 KB) MD5:e66bdb44f7a66d3fd761342bf3f6ab2c Primary data file for dataset ID 2934

More Information about this dataset

Funding Sources

None available yet

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
DRFT08RR	RR_2002_SOFeX	2002-01-06	R/V Roger Revelle	Ken Johnson (Chief Scientist)	data info

Instruments

Sea-Bird SBE 25 Sealogger CTD

Supplied Name: CTD Seabird 25

Supplied Description:

Instrument Type

Generic Name: Sea-Bird SBE 25 Sealogger CTD

Acronym: CTD SBE 25

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0040/

Generic Description:

The Sea-Bird SBE 25 SEALOGGER CTD is battery powered and is typically used to record data in memory, eliminating the need for a large vessel, electrical sea cable, and on-board computer. All SBE 25s can also operate in real-time, transmitting data via an opto-isolated RS-232 serial port. Temperature and conductivity are measured by the SBE 3F Temperature sensor and SBE 4 Conductivity sensor (same as those used on the premium SBE 9plus CTD). The SBE 25 also includes the SBE 5P (plastic) or 5T (titanium) Submersible Pump and TC Duct. The pump-controlled, TC-ducted flow configuration significantly reduces salinity spiking caused by ship heave, and in calm waters allows slower descent rates for improved resolution of water column features. Pressure is measured by the modular SBE 29 Temperature Compensated Strain-Gauge Pressure sensor (available in eight depth ranges to suit the operating depth requirement). The SBE 25's modular design makes it easy to configure in the field for a wide range of auxiliary sensors, including optional dissolved oxygen (SBE 43), pH (SBE 18 or SBE 27), fluorescence, transmissivity, PAR, and optical backscatter sensors. More information from Sea-Bird Electronics: http:www.seabird.com.

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
sta	station identifier	dimensionless	sta
ev_type	event type descriptor string	dimensionless	no_bcodmo_term
event	unique sampling event composite of date and time	YYYYMMDDhhmm	event
date	date sampling began	YYYYMMDD	date
time	time sampling began	hhmm	time
lon	longitude, negative denotes West	decimal degrees	lon
lat	latitude, negative denotes South	decimal degrees	lat
press	pressure, from CTD Strain Gauge	decibars	press
depth	depth, calculated from pressure	meters	depth
temp	temperature, from CTD, ITS-90	degrees Celsius	temp
sal	salinity, from CTD, PSS-78 (PSU)	dimensionless	sal
sigma_0	sigma theta (potential density) (from primary T0,C0 sensors)	kilograms/meter^3	sigma_0
potemp	potential temperature, ITS-90 (from primary T0,C0 sensors)	degrees Celsius	potemp
fluor	fluorescence, from CTD profiler (is this fluor_chla ??)	micrograms/liter ??	fluor
V0	unknown	unknown ??	no_bcodmo_term
cond	conductivity, from CTD (from primary C0 sensor)	Siemens/meter	cond

Status message

Database

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Dataset: CTD_TMR_SFX_RR