Dataset: Hood Canal CTD

Name: CTD profiles of temperature, oxygen, salinity, density, fluorescence, PAR, and pH collected in Hood Canal on cruises CB1072, CB1077, and RC008 during 2017 and 2018
Published: 2020-10-09
Keywords: oceans

Cite This Dataset

DOI:10.26008/1912/bco-dmo.826281.1

Spatial Extent: N:47.42 E:-123.01 S:47.38 W:-123.11

Temporal Extent: 2017-06-13 - 2018-09-27

Project:

Causes and consequences of hypoxia and pH impacts on zooplankton: Linking movement behavior to vertical distribution. (Zooplankton Swimming)

Principal Investigator:

Julie E. Keister (University of Washington, UW)

Co-Principal Investigator:

Daniel Grunbaum (University of Washington, UW)

Contact:

Julie E. Keister (University of Washington, UW)

BCO-DMO Data Manager:

Shannon Rauch (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2020-10-09

Restricted:

Validated:

Yes

Current State:

Final no updates expected

CTD profiles of temperature, oxygen, salinity, density, fluorescence, PAR, and pH collected in Hood Canal on cruises CB1072, CB1077, and RC008 during 2017 and 2018

Abstract:

CTD profiles of temperature, oxygen, salinity, density, fluorescence, PAR, and pH collected in Hood Canal on cruises CB1072, CB1077, and RC008 during 2017 and 2018.

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Archival Copy

Version Date	Archive	Persistent Identifier (PID)	Date PID Issued
2020-10-09	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.26008/1912/bco-dmo.826281.1	2020-11-10

Description

CTD profiles of temperature, oxygen, salinity, density, fluorescence, PAR, and pH collected in Hood Canal on cruises CB1072, CB1077, and RC008 during 2017 and 2018.

Methods & Sampling

CTD data were collected from near surface to 5-10 m off the seafloor. Winkler titrations were used to calculate a calibration for oxygen data (equation provided, but not applied to this dataset).

Data Processing Description

CTD data from near surface to 5-10 m off the seafloor were processed using Sea Bird software to create 1-m data bins. Oxygen was aligned. Dates and times are in local time, PDT.

Based on modified Winkler titrations, the formula y = 0.9144x + 0.1975 can be applied to the CTD data to calibrate the "Oxygen, SBE 43 (mg/l)" for the 2017 cruises. The formula y = 0.9698x + 0.0691 can be applied for the 2018 cruises.

BCO-DMO Processing:
- concatenated data from separate cruises into one dataset;
- renamed fields.

Data Files

File
CTD.csv (Comma Separated Values (.csv), 485.90 KB) MD5:adb2d7077fe2d58941d27c72b330d4de Primary data file for dataset ID 826281

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1657992

Deployments

Deployment	Start Date	Platform	Investigator
CB1072	2017-06-13	R/V Clifford A. Barnes	Julie E. Keister (Chief Scientist)	data info
CB1077	2017-08-15	R/V Clifford A. Barnes	Julie E. Keister (Chief Scientist)	data info
RC008	2018-09-18	R/V Rachel Carson	Julie E. Keister (Chief Scientist)	data info

Instruments

CTD Sea-Bird 9

Supplied Name: Sea-Bird SBE9 CTD

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

pH Sensor

Supplied Name: SBE 18

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: 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: 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
year_month	Year and month (UTC) of cruise	unitless	date
cruise	Cruise identifier	unitless	cruise_id
file_name	Original file name	unitless	file_name
Density	Density	kilograms per cubic meter (Kg/m^3)	density
Depth	Depth (salt water)	meters (m)	depth
Fluorescence	Fluorescence, WET Labs ECO-AFL/FL	milligrams per cubic meter (mg/m^3)	fluor
Latitude	Latitude	degrees North	lat
Longitude	Longitude	degrees East	lon
Oxygen_raw	Oxygen raw, SBE 43	volts (V)	O2_v
Oxygen_SBE_43	Oxygen, SBE 43	milligrams per liter (mg/l)	O2
Oxygen_saturation_Garcia_Gordon	Oxygen saturation, Garcia & Gordon	milligrams per liter (mg/l)	O2sat
Oxygen_saturation_Weiss	Oxygen saturation, Weiss	milligrams per liter (mg/l)	O2sat
PAR_Irradiance	PAR/ Irradiance, Biospherical/Licor	micromoles photons per square meter per second (umol photons/m^2/s^1)	PAR
pH	pH	unitless	pH
Salinity_Practical	Salinity, Practical	PSU	sal
Sound_Velocity_Delgrosso	Sound Velocity (Delgrosso)	meters per second (m/s)	sound_vel
Temperature	Temperature (ITS-9)	degrees Celsius	temp
Voltage_0	Voltage 0	volts (V)	no_bcodmo_term
Voltage_1	Voltage 1	volts (V)	no_bcodmo_term
Voltage_2	Voltage 2	volts (V)	no_bcodmo_term
Voltage_3	Voltage 3	volts (V)	no_bcodmo_term
Voltage_4	Voltage 4	volts (V)	no_bcodmo_term
Voltage_5	Voltage 5	volts (V)	no_bcodmo_term
Voltage_6	Voltage 6	volts (V)	no_bcodmo_term
Voltage_7	Voltage 7	volts (V)	no_bcodmo_term
Descent_Rate	Descent Rate	meters per second (m/s)	descent_rate
Pressure_Temperature	Pressure Temperature	degrees Celsius	temp
Pressure_db	Pressure, Digiquartz	decibars (db)	press
Pressure_psi	Pressure, Digiquartz	psi	press
Sound_Velocity_Chen_Millero	Sound Velocity (Chen-Millero)	meters per second (m/s)	sound_vel
Sound_Velocity_Wilson	Sound Velocity (Wilson)	meters per second (m/s)	sound_vel
Average_Sound_Velocity_Delgrosso	Average Sound Velocity (Delgrosso)	meters per second (m/s)	sound_vel
Oxygen_SBE_43_Aligned	Oxygen, SBE 43, offset corrected	milligrams per liter (mg/l)	O2
Flag	flag	unitless	q_flag

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Database

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Dataset: Hood Canal CTD