Dataset: CTD profiles
Deployment: WB0413

CTD pressure, temperature, salinity profiles

Principal Investigator:

Nicholas Bates (Bermuda Biological Station for Research, BBSR)

BCO-DMO Data Manager:

Theresa McKee (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

Eddies Dynamics, Mixing, Export, and Species composition (EDDIES)

Version:

08 March 2006

Deployment Synonyms:

EDT2 2004 Transect 2

Version Date:

2006-03-08

Data URL:

https://www.bco-dmo.org/dataset-deployment/452303/data

Expand/Collapse All

Description

CTD pressure, temperature, salinity profiles

Methods & Sampling

Dataset acquisition description

Deployment-specific acquisition description

 PI:              Nick Bates
 of:              Bermuda Biological Station for Research (BBSR)
 dataset:         CTD profiles; pres, temp, salinity, etc.
 dates:           02 August 2004 to 11 August 2004  (20040802-20040811)
 location:        N: 31.761  S: 30.331  W: -66.406  E: -64.164
 project/cruise:  EDDIES/WB0413 2004 Transect 2 (EDT2)
 platform:        R/V Weatherbird II
 
 Methodology: see Chapter 3: CTD & Related Measurements in U.S. JGOFS BATS  
    Method Manual Version 4 (1997).  Bermuda Atlantic Time-Series Study April 1997. 
    Anthony H. Knap, Anthony F. Michaels et al., 136 pp.
    (link to BATS Method Manual version 4 local copy)
 
 Change history: YYMMDD
    060308: downloaded x0413c*f.dat files from EDDIES data web site
            added to OCB database by Cyndy Chandler, OCB DMO;
            event, date, time, lon and lat are from CTD cast list;
            "unused" field (all -9.990) removed from data;
            potential temperature derived using MATLAB PhyPropSW routine
            [ sw_ptmp.m ]
 
 OCB DMO Note: all data are from primary sensors unless noted
 
 Caution:  this data is considered final, but oxygen, conductivity and
    it's derived parameters have not yet had field calibrations applied.
    
    Still need documentation for this data:
    (no units were specified, DMO is guessing at all of them) ??
    assuming salinity scale is PSS-78; and depth calculated from CTD 
    pressure; assuming temp scale ITS-90 (not IPTS-68); 
    guessing units for cond = S/m and CTD O2 = umol/kg 
    guessing density is sigma-t (and not sigma-theta)

Data Processing Description

Dataset Processing Description

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-0241310	NSF Division of Ocean Sciences

Instruments

CTD Sea-Bird SBE 911plus

Supplied Description:

SBE 911/917 plus CTD
Pressure, Digiquartz with TC
dual Temperature and Conductivity sensors
Fluorometer, Wetlab ECO-AFL/FL
PAR/Irradiance, Biospherical/Licor
Transmissometer, Chelsea/Seatech/Wetlab CStar
ISUS_NO3
Oxygen, SBE 43
SPAR/Surface Irradiance

Instrument Type

Generic Name: CTD Sea-Bird SBE 911plus

Acronym: CTD SBE 911plus

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0058/

Generic Description:

The Sea-Bird SBE 911 plus is a type of CTD instrument package for continuous measurement of conductivity, temperature and pressure. The SBE 911 plus includes the SBE 9plus Underwater Unit and the SBE 11plus Deck Unit (for real-time readout using conductive wire) for deployment from a vessel. The combination of the SBE 9 plus and SBE 11 plus is called a SBE 911 plus. The SBE 9 plus uses Sea-Bird's standard modular temperature and conductivity sensors (SBE 3 plus and SBE 4). The SBE 9 plus CTD can be configured with up to eight auxiliary sensors to measure other parameters including dissolved oxygen, pH, turbidity, fluorescence, light (PAR), light transmission, etc.). more information from Sea-Bird Electronics

LI-COR Biospherical PAR Sensor

Supplied Description:

Instrument Type

Generic Name: LI-COR Biospherical PAR Sensor

Acronym: LI-COR Biospherical PAR

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0074/

Generic Description:

The LI-COR Biospherical PAR Sensor is used to measure Photosynthetically Available Radiation (PAR) in the water column. This instrument designation is used when specific make and model are not known.

Sea-Bird SBE 43 Dissolved Oxygen Sensor

Supplied Name: SBE 43 Dissolved Oxygen Sensor

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

Transmissometer

Supplied Description:

Instrument Type

Generic Name: Transmissometer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/124/

Generic Description:

A transmissometer measures the beam attenuation coefficient of the lightsource over the instrument's path-length. This instrument designation is used when specific manufacturer, make and model are not known.

Wet Labs ECO-AFL/FL Fluorometer

Supplied Description:

Instrument Type

Generic Name: Wet Labs ECO-AFL/FL Fluorometer

Acronym: ECO AFL/FL

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0172/

Generic Description:

The Environmental Characterization Optics (ECO) series of single channel fluorometers delivers both high resolution and wide ranges across the entire line of parameters using 14 bit digital processing. The ECO series excels in biological monitoring and dye trace studies. The potted optics block results in long term stability of the instrument and the optional anti-biofouling technology delivers truly long term field measurements.
more information from Wet Labs

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
event	unique sampling event number	YYYYMMDDhhmm	event
date	start date of event (GMT)	YYYYMMDD	date
time	start time of event (GMT)	hhmm	time
lon	longitude, negative denotes West	decimal degrees	lon
lat	latitude, negative denotes South	decimal degrees	lat
Pmax	pressure, maximum during cast	decibars	Pmax
sta	station number	dimensionless	sta
press	pressure, from CTD	decibars	press
depth	depth, calculated from pressure	meters	depth
temp	temperature, from CTD, ITS-90 (from primary T0 sensor)	degrees Celsius	temp
potemp	potential temperature, ITS-90 (from primary T0,C0 sensors)	degrees Celsius	potemp
sal	salinity, from CTD, PSS-78 (PSU) (from primary T0,C0 sensors)	dimensionless	sal
sigma_0	sigma theta (potential density) (from primary T0,C0 sensors)	kilograms/meter^3	sigma_0
temp_S	temperature, from CTD, ITS-90 (from secondary T1 sensor)	degrees Celsius	temp2
sal_S	salinity, from CTD, PSS-78 (PSU) (from secondary T1,C1 sensors)	dimensionless	sal2
sigma_S	sigma theta (potential density) (from secondary T1,C1 sensors)	kilograms/meter^3	sigma_theta
cond	conductivity, from CTD (from primary C0 sensor)	Siemens/meter	cond
cond_S	conductivity, from CTD (from secondary C1 sensor)	Siemens/meter	cond2
O2_ml_L	oxygen, dissolved from SBE CTD	milliliters/liter	O2_ml_L
fluor_chla	fluorescence, from CTD profiler WET Labs ECO-AFL/FL sensor, rescaled units are numerically equivalent to chlorophyll-a concentrations	micrograms/liter	chl_a_fluor
PAR	irradiance, Biospherical/Licor	microEinsteins/meter^2/second	PAR
SPAR	surface irradiance	microEinsteins/meter^2/second	SPAR
trans	light transmission from Chelsea/Seatech/Wetlab CStar 0.000 indicates missing or no data	percent/100	trans
sigma_0_S	sigma theta (potential density) (from secondary T1,C1 sensors)	kilograms/meter^3	sigma_theta
O2_umol_kg	oxygen, dissolved from SBE CTD	micromoles/kilogram	O2_umol_kg
turb	seapoint turbidity meter data	FTU	turbidity
O2_mg_L	oxygen, dissolved from SBE 43	milligrams/liter	O2
fluor	fluorescence, (wetlabs eco)	micrograms/liter	fluor
O2_ml_L_S	oxygen, dissolved (secondary)	milliliters/liter	O2
sigma_t	sigma -T (density) from primary cond and temp	kilograms/meter^3	sigma_t

Database

Contribute Data

Dataset: CTD profiles
Deployment: WB0413

Dataset acquisition description

Deployment-specific acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: CTD profilesDeployment: WB0413

Dataset acquisition description

Deployment-specific acquisition description

Dataset Processing Description

Dataset: CTD profiles
Deployment: WB0413