Dataset: CTD Profiles

Name: CTD Profiles from R/V Kilo Moana, R/V Seward Johnson KM0703, SJ0609 in the tropical and subtropical Southwest Pacific, and tropical North Atlantic from 2006-2007 (DIAZOTROPHS project)
Published: 2009-11-12
Keywords: oceans

Cite This Dataset

Spatial Extent: N:18.393 E:147.415 S:-30.0002 W:-27.2405

Project:

Biology and Ecology of Newly Discovered Diazotrophs in the Open Ocean (DIAZOTROPHS)

Principal Investigator:

Jonathan P. Zehr (University of California-Santa Cruz, UCSC)

Co-Principal Investigator:

Matthew J. Church (University of Hawaiʻi at Mānoa, SOEST)

Joseph Montoya (Georgia Institute of Technology, GA Tech)

BCO-DMO Data Manager:

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

Version:

12Nov2009

Version Date:

2009-11-12

Validated:

Yes

Current State:

Final no updates expected

CTD Profiles from R/V Kilo Moana, R/V Seward Johnson KM0703, SJ0609 in the tropical and subtropical Southwest Pacific, and tropical North Atlantic from 2006-2007 (DIAZOTROPHS project)

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Description

DIAZOTROPHS - CTD profile data
These data were collected as part of a study of the diversity and
activity of nitrogen-fixing organisms in oligotrophic waters.

Methods & Sampling

See Platform deployments for cruise specific documentation

Data Processing Description

BCO-DMO Processing Notes
Generated from original files contributed to BCO-DMO as zipped data/docs files by Joseph Montoya

BCO-DMO Edits
- Date formatted to YYYYMMDD
- Time formatted to HHMM
- Parameter names modified to conform to BCO-DMO convention
- Duplicate date column deleted
- empty cells filled with 'nd' (no data)
- 'trans' parameter added to KM0703 data set with 'nd' for data values
- 'O2_%saturation' added to SJ0609 data set with 'nd' for data values
- Data values padded to consistent decimal places

Data Files

File
CTD_Profiles.csv (Comma Separated Values (.csv), 9.30 MB) MD5:26b8cadaed0caf80012499c48ad0ebc3 Primary data file for dataset ID 3263

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-0425583
NSF Division of Ocean Sciences	OCE-0425363
Gordon and Betty Moore Foundation	unknown DIAZOTROPHS Moore

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
KM0703	SPEEDO SPAK	2007-03-14	R/V Kilo Moana	Jonathan P. Zehr (Chief Scientist) Joseph Montoya (Co-Chief Scientist)	data info
SJ0609		2006-06-18	R/V Seward Johnson	Jonathan P. Zehr (Chief Scientist)	data info

Instruments

CTD Sea-Bird 911

Supplied Name: CTD Seabird 911

Supplied Description:

CTD-rosette

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.

Fluorometer

Supplied Description:

Seapoint

Instrument Type

Generic Name: Fluorometer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/113/

Generic Description:

A fluorometer or fluorimeter is a device used to measure parameters of fluorescence: its intensity and wavelength distribution of emission spectrum after excitation by a certain spectrum of light. The instrument is designed to measure the amount of stimulated electromagnetic radiation produced by pulses of electromagnetic radiation emitted into a water sample or in situ.

Sea-Bird SBE 43 Dissolved Oxygen Sensor

Supplied Name: CTD Seabird SBE 43

Supplied Description:

Instrument Type

Generic Name: Sea-Bird SBE 43 Dissolved Oxygen Sensor

Acronym: SBE-43 DO

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0036/

Generic Description:

The Sea-Bird SBE 43 dissolved oxygen sensor is a redesign of the Clark polarographic membrane type of dissolved oxygen sensors. 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
Cruise	Cruise Id	text	cruiseid
Station	Station Id (Station number.Cast number at station)	nn.xx	station
depth	depth	meters	depth
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	decibars	press
temp	temperature; from CTD; ITS-90	degrees Celsius	temp
sal	salinity; from CTD; PSS-78 (PSU)	dimensionless	sal
trans	transmissivity	voltage	trans
Density	Density	kg/m3	density
SigmaT	SigmaT	unitless	sigma_t
fluor	fluorescence; uncalibrated	voltage	fluor
O2	oxygen; dissolved from SBE 43	umol/kg	O2
O2_satP	oxygen saturation (percentage)	percent	O2sat

Status message

Database

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Dataset: CTD Profiles