Dataset: NILS CTD Profiles
Deployment: BH05-18

CTD Profile Data from Lake Superior

Principal Investigator:

Dr Robert W. Sterner (University of Minnesota Duluth)

BCO-DMO Data Manager:

Ms Dicky Allison (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Amber D. York (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

The Nitrifying of Lake Superior and Its Intersections with the P and Fe Cycles (NILS)

Deployment Synonyms:

NILS4

Data URL:

https://www.bco-dmo.org/dataset-deployment/682022/data

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Description

This dataset contains temperature, conductivity, dissolved oxygen, fluorescence, PAR, and salinity measured during CTD profile downcasts in Lake Superior.

Methods & Sampling

Dataset acquisition description

CTD casts were conducted during R/V Blue Heron cruises at designated stations.

Deployment-specific acquisition description

NILSS4

Data Processing Description

Dataset Processing Description

BCO-DMO Data Manager Processing Notes:
* added a conventional header with dataset name, PI name, version date
* modified parameter names to conform with BCO-DMO naming conventions
* blank values replaced with no data value 'nd'
* Added ISO Date format generated from Date and Time values
* fixed date error from date 20830829 to 20050829 for station k1 in cruise NILSS4 based on samples before and after all being from same day
* date and time of NILS11 station change to "nd" for "no data" because of erroneous dates and times

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-0352208	NSF Division of Ocean Sciences
OCE-0352291	NSF Division of Ocean Sciences

Instruments

CTD Sea-Bird SBE 911plus

Supplied Description:

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

Fluorometer

Supplied Description:

Wetlab Wetstar

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.

Photosynthetically Available Radiation Sensor

Supplied Description:

Biospherical/Licor

Instrument Type

Generic Name: Photosynthetically Available Radiation Sensor

Acronym: PAR sensor

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/122/

Generic Description:

A PAR sensor measures photosynthetically available (or active) radiation. The sensor measures photon flux density (photons per second per square meter) within the visible wavelength range (typically 400 to 700 nanometers). PAR gives an indication of the total energy available to plants for photosynthesis. This instrument name is used when specific type, make and model are not known.

Sea-Bird SBE 43 Dissolved Oxygen Sensor

Supplied Name: SBE 43 Dissolved Oxygen Sensor

Supplied Description:

SBE 43

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:

Beam Transmission, Chelsea/Seatech/Wetlab CStar

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.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
CruiseID	cruise identifier	unitless	cruise_id
Station	station identifier	unitless	station
Date	date (UTC) in format YYYYMMDD	unitless	date
Time	time (UTC) in format HHMMSS	unitless	time
Lat	latitude of the station	decimal degrees	lat
Lon	longitude of the station; west is negative	decimal degrees	lon
temp	temperature	degrees C	temp
cond	actual conductivity	microSiemens per centimeter	cond
cond_spec	specific conductance (actual conductivity at 25 degrees C)	microSiemens per centimeter	cond
beam_trans	beam transmission	percent	trans
fluor	fluorescence	miligrams per meter cubed	fluor
O2_ml_L	dissolved oxygen	milileters per liter	O2_ml_L
O2_mg_L	dissolved oxygen	miligrams per liter	O2_mg_L
O2_umol_kg	dissolved oxygen	micromoles per kilogram	O2_umol_kg
PAR	Photosynthetically Active Radiation (Biospherical/Licor)	microEinsteins per meter squared per second	PAR
sal	salinity	practical salinity units	sal
ISO_DateTime_UTC	Date/Time (UTC) in ISO format YYYY-MM-DDTHH:MM:SS[.xx]	unitless	ISO_DateTime_UTC
press	Pressure at time of CTD sample.	decibars	press

Database

Contribute Data

Dataset: NILS CTD Profiles
Deployment: BH05-18

Dataset acquisition description

Deployment-specific acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: NILS CTD ProfilesDeployment: BH05-18

Dataset acquisition description

Deployment-specific acquisition description

Dataset Processing Description

Dataset: NILS CTD Profiles
Deployment: BH05-18