Dataset: Bottle data - Krill cruises
Deployment: CB1073

View Data: For data, See Dataset Metadata Page: https://www.bco-dmo.org/dataset/842728

Principal Investigator:

Julie E. Keister (University of Washington, UW)

Contact:

Anna K. McLaskey (University of British Columbia , UBC-IOF)

BCO-DMO Data Manager:

Karen Soenen (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

Consequences of hypoxia on food web linkages in a pelagic marine ecosystem (PelagicHypoxia)

Version:

Expand/Collapse All

Description

Methods & Sampling

Dataset acquisition description

Discrete water samples were collected with Niskin bottles. Depths for discrete samples were chosen to characterize the shape of the vertical profile at each station, as determined by the CTD (see CTD data for full profiles). In some cases carbonate chemistry parameters and dissolved oxygen were not measured at the same depth. Temperature and salinity measurements are from the CTD; total dissolved inorganic carbon (CT), total alkalinity (AT), and dissolved oxygen (DO) were measured; pH and pCO2 were calculated.

Data Processing Description

Dataset Processing Description

All carbonate chemistry samples were collected and analyzed according to Dickson et al. (2007). Total alkalinity was measured by open-cell potentiometric titration and total dissolved inorganic carbon was measured by acidification and quantification using a CO2 coulometer (UIC model CM5015) at the University of Washington’s School of Oceanography. Certified Reference Materials were analyzed as an independent verification of instrument calibrations (Dickson et al. 2007). pH and pCO2 were calculated from AT and CT using the R package seacarb and constants from Lueker et al. (2000) and the total pH scale.

Dissolved oxygen was measured by the modified Winkler titration method (Carpenter 1965).

BCO-DMO processing notes:

Adjusted parameter names to comply with database requirements

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-1154648	NSF Division of Ocean Sciences

Instruments

CTD Sea-Bird 9

Supplied Name: Sea-Bird SBE9 CTD profiler

Supplied Description:

Sea-Bird SBE9 CTD profiler equipped with Niskin bottles

Instrument Type

Generic Name: CTD Sea-Bird 9

Acronym: CTD SBE 9

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/130/

Generic Description:

The Sea-Bird SBE 9 is a type of CTD instrument package. The SBE 9 is the Underwater Unit and is most often combined with the SBE 11 Deck Unit (for real-time readout using conductive wire) when deployed from a research 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, fluorometer, altimeter, etc.). Note that in most cases, it is more accurate to specify SBE 911 than SBE 9 since it is likely a SBE 11 deck unit was used. more information from Sea-Bird Electronics

Niskin bottle

Supplied Name: Niskin bottles

Supplied Description:

Sea-Bird SBE9 CTD profiler equipped with Niskin bottles

Instrument Type

Generic Name: Niskin bottle

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0412/

Generic Description:

A Niskin bottle (a next generation water sampler based on the Nansen bottle) is a cylindrical, non-metallic water collection device with stoppers at both ends. The bottles can be attached individually on a hydrowire or deployed in 12, 24, or 36 bottle Rosette systems mounted on a frame and combined with a CTD. Niskin bottles are used to collect discrete water samples for a range of measurements including pigments, nutrients, plankton, etc.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
ISO_Date	Date sample was collected in ISO format (yyy-mm-dd)	unitless	date
Station	Station code wwhere sampling occurred	unitless	sta_id
Latitude	Latitude of station, south is negative	decimal degrees	lat
Longitude	Longitude of station, west is negative	decimal degrees	lon
Depth	Depth of collection	meters (m)	depth
Temperature	In situ temperatures measured by CTD	degrees Celsius (°C)	temp
Salinity	In situ salinity measured by CTD	units	sal
Total_dissolved_inorganic_carbon	Total dissolved inorganic carbon	umol per kilogram (umol/kg)	DIC
Total_dissolved_inorganic_carbon_duplicate	Duplicate analysis for Total dissolved inorganic carbon	umol per kilogram (umol/kg)	DIC
Alkalinity	Total alkalinity	umol per kilogram (umol/kg)	TALK
pH	Calculated pH	total scale	pH
pCO2	Calculated pCO2	micro atmosphere (uatm)	pCO2
Dissolved_oxygen	Dissolved oxygen measured by Winkler titration	milligrams per liters (mg/L)	O2
Dissolved_oxygen_duplicate	Duplicate oxygen measured by Winkler titration	milligrams per liters (mg/L)	O2
Dissolved_oxygen_triplicate	Triplicate oxygen measured by Winkler titration	milligrams per liters (mg/L)	O2

Database

Contribute Data

Dataset: Bottle data - Krill cruises
Deployment: CB1073

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: Bottle data - Krill cruisesDeployment: CB1073

Dataset acquisition description

Dataset Processing Description

Dataset: Bottle data - Krill cruises
Deployment: CB1073