Dataset: CTD casts - Krill cruises

Name: CTD profiles acquired in Puget Sound, WA aboard R/V Clifford A. Barnes during cruises CB1073 and CB1078 in 2017.
Published: 2021-03-02
Keywords: hypoxia, ocean acidification, coastal oceanography, oceans

Cite This Dataset

DOI:10.26008/1912/bco-dmo.842972.1

Spatial Extent: N:47.8972 E:-122.477 S:47.2748 W:-123.134

Temporal Extent: 2017-06-24 - 2017-09-02

Project:

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

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)

Version:

Version Date:

2021-03-02

Restricted:

Validated:

Yes

Current State:

Final no updates expected

CTD profiles acquired in Puget Sound, WA aboard R/V Clifford A. Barnes during cruises CB1073 and CB1078 in 2017.

Abstract:

CTD profiles acquired in Puget Sound, WA aboard R/V Clifford A. Barnes during cruises CB1073 and CB1078 in 2017.

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Archival Copy

Version Date	Archive	Persistent Identifier	Date Assigned
2021-03-02	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.26008/1912/bco-dmo.842972.1	2021-03-24

Methods & Sampling

CTD (Sea Bird SBE 911) casts with WETLabs ECO-AFL fluorometer, SBE 43 oxygen sensor, and SBE 18 pH sensor.

Data starting at 1m depth from the surface were processed using Sea-Bird software to create 1-m data bins. Oxygen data were aligned. The pH data from CTD casts for each cruise were corrected using an average offset to pH calculated from the discrete total alkalinity and dissolved inorganic samples from that cast (see Bottle Data). Both raw and corrected pH are given.

Data Processing Description

BCO-DMO processing notes:

Concatenated all CTD cast files
Added station ID to dataset
Adjusted parameter names to comply with database requirements

Data Files

File
concat_all.csv (Comma Separated Values (.csv), 170.45 KB) MD5:b799fb9f0c3fc9b1aa15e1bee89a427d Primary data file for dataset ID 842972

More Information about this dataset

Funding Sources

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

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
CB1073		2017-06-23	R/V Clifford A. Barnes	Anna K. McLaskey (Chief Scientist)	data info
CB1078		2017-08-25	R/V Clifford A. Barnes	Anna K. McLaskey (Chief Scientist)	data info

Instruments

CTD Sea-Bird 9

Supplied Name: Sea-Bird SBE9 CTD profiler

Supplied Description:

Sea-Bird SBE9 CTD profiler equipped with a pH sensor (SBE 18), oxygen sensor (SBE 43), fluorometer (WETLabs ECO-AFL), and 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 a pH sensor (SBE 18), oxygen sensor (SBE 43), fluorometer (WETLabs ECO-AFL), and 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.

pH Sensor

Supplied Name: SBE18

Supplied Description:

 Sea-Bird SBE9 CTD profiler equipped with a pH sensor (SBE 18), oxygen sensor (SBE 43), fluorometer (WETLabs ECO-AFL), and Niskin bottles.

Instrument Type

Generic Name: pH Sensor

Generic Description:

An instrument that measures the hydrogen ion activity in solutions.

The overall concentration of hydrogen ions is inversely related to its pH. The pH scale ranges from 0 to 14 and indicates whether acidic (more H+) or basic (less H+).

Sea-Bird SBE 43 Dissolved Oxygen Sensor

Supplied Name: oxygen sensor (SBE 43)

Supplied Description:

Sea-Bird SBE9 CTD profiler equipped with a pH sensor (SBE 18), oxygen sensor (SBE 43), fluorometer (WETLabs ECO-AFL), and Niskin bottles.

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

Wet Labs ECO-AFL/FL Fluorometer

Supplied Name: fluorometer (WETLabs ECO-AFL)

Supplied Description:

Sea-Bird SBE9 CTD profiler equipped with a pH sensor (SBE 18), oxygen sensor (SBE 43), fluorometer (WETLabs ECO-AFL), and Niskin bottles

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

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

Supplied Name	Supplied description	Supplied Units	Standard Name
Station	Station ID	unitless	sta_id
Latitude	Latitude of CTD cast	decimal degrees	lat
Longitutde	Longitude of CTD cast	decimal degrees	lon
ISO_DateTime_UTC	Date and time of CTD cast in ISO format (yyyy-mm-ddThh:mm:ss), UTC time zone Format: %Y-%m-%dT%H:%M:%SZ	unitless	ISO_DateTime_UTC
Depth	Water depth	meters (m)	depth
pH	Raw pH from sensor	unitless	pH
Temperature	Water temperature	degrees Celsius (°C)	temp
Salinity	Seawater salinity	PSU	sal
Fluorescence	Fluorescence	milligrams per cubic meter (mg/m3)	fluor
Oxygen_mg_L	Dissolved oxygen	milligrams per liter (mg/L)	O2
Oxygen_mM_L	Dissolved oxygen	micromoles per liter (umol/L)	O2
pH_corrected	pH adjusted with an average offset calculated from bottle samples	unitless	pH
Pressure	Water pressure	decibels (db)	press

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Database

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Dataset: CTD casts - Krill cruises