Dataset: Chesapeake Bay CTD 2021

Name: CTD data from R/V Hugh R. Sharp cruise HRS2110 in the Chesapeake Bay during August 2021
Published: 2022-01-26
Keywords: oceans

Cite This Dataset

DOI:10.26008/1912/bco-dmo.868879.1

Spatial Extent: N:39.1405 E:-76.0922 S:35.0061 W:-76.4395

Temporal Extent: 2021-08-04 - 2021-08-10

Project:

Nitrite Oxidation in Oxygen Minimum Zones (NO2Ox_OMZs)

Principal Investigator:

Bess B. Ward (Princeton University)

BCO-DMO Data Manager:

Sawyer Newman (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2022-01-26

Restricted:

Validated:

Yes

Current State:

Final no updates expected

CTD data from R/V Hugh R. Sharp cruise HRS2110 in the Chesapeake Bay during August 2021

Abstract:

This dataset includes CTD data from R/V Hugh R. Sharp cruise HRS2110 in the Chesapeake Bay during August 2021. These data are associated with the "Nitrate Oxidation in Oxygen Minimum Zones" project.

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Archival Copy

Version Date	Archive	Persistent Identifier	Date Assigned
2022-01-26	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.26008/1912/bco-dmo.868879.1	2022-02-09

Methods & Sampling

Water samples were collected using a 12 x 10-liter Niskin bottle rosette sampler equipped with a conductivity, temperature, and pressure instrument package (SBE9, Sea-Bird Electronics, Bellevue, Washington, U.S.A.), a sensor for dissolved oxygen (SBE43, Sea-Bird), and a sensor for chlorophyll fluorescence (FluoroWetlabECO, AFL FL Sensor).

Data Processing Description

CTD data were processed with Seasave V 7.26.0.7.

BCO-DMO Processing Notes:
- Standardized UTC time formatting;
- Added a UTC datetime field in ISO 8601 format;
- Renamed fields to remove all special characters except underscores.

Data Files

File
cb_2021_compiledctdfiles-1.csv (Comma Separated Values (.csv), 90.12 KB) MD5:84db1a8541471dc87cb5aec3cc3fd161 Primary data file for dataset ID 868879

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1946516

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
HRS2110	HRS 21-10 CB2021 Chesapeake Bay 2021	2021-08-03	R/V Hugh R. Sharp	Bess B. Ward (Chief Scientist)	data info

Instruments

CTD Sea-Bird 9

Supplied Description:

A conductivity, temperature, and pressure instrument package (SBE9, Sea-Bird Electronics, Bellevue, Washington, U.S.A) attached to the Niskin bottle rosette used for sample collection.

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 bottle rosette sampler

Supplied Description:

Water samples were collected using a 12 x 10 L Niskin bottle rosette sampler, which was equipped with CTD Sea-Bird 9, Sea-Bird SBE 43 Dissolved Oxygen, and Wet Labs ECO-AFL/FL Fluorometer sensors.

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.

Sea-Bird SBE 43 Dissolved Oxygen Sensor

Supplied Name: SBE43, Sea-Bird

Supplied Description:

A dissolved oxygen sensor attached to the Niskin bottle rosette used for sample collection.

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: FluoroWetlabECO, AFL FL Sensor

Supplied Description:

A sensor for chlorophyll fluorescence attached to the Niskin bottle rosette used for sample collection.

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
Cast	cast number	unitless	cast
Station	station name	unitless	station
ISO_DateTime_UTC	Datetime of cast; YYYYY-MM-DDTHH:MM:SSZ Format: %Y-%m-%dT%H:%M:%SZ	unitless	ISO_DateTime_UTC
Date	Date of cast; YYYY-MM-DD Format: %Y-%m-%d	unitless	date
time_UTC	Time of deployent, UTC; HH:MM:SS Format: %H:%M:%S	unitless	time
timeS	Time, Elapsed	seconds	time_elapsed
depSM	Depth [salt water]	m	depth
prDM	Pressure, Digiquartz	decibars	press
t090C	Temperature	oC	temp
t190C	Temperature, 2	oC	temp
c0S_per_m	Conductivity	S/m	cond
c1S_per_m	Conductivity, 2	S/m	cond
sal00_1	Salinity, Practical	PSU	sal
sal11_1	Salinity, Practical, 2	PSU	sal
timeQ	Time, NMEA	seconds	time
timeY	Time, System	seconds	time
latitude	Latitude	decimal degrees	lat
longitude	Longitude	decimal degrees	lon
svCM_1	Sound Velocity	m/s	sound_vel
flECO_AFL	Fluorescence, WET Labs ECO-AFL/FL	mg/m3	fluor
sbeox0ML_per_L	Oxygen, SBE 43	ml/l	O2
sbox0Mm_per_Kg	Oxygen, SBE 43	µmol/kg	O2
sbeox0Mg_per_L	Oxygen, SBE 43	mg/l	O2
sigma_E00	Density [sigma-theta]	kg/m3	density
sigma_E11	Density, 2 [sigma-theta]	kgk/m3	density
potemp090C	Potential Temperature	oC	potemp
potemp190C	Potential Temperature, 2	oC	potemp
svCM_2	Sound Velocity [Chen-Millero]	m/s	sound_vel
sal00_2	Salinity, Practical	PSU	sal
sal11_2	Salinity, Practical, 2	PSU	sal
flag	flag	unitless	flag

Status message

Database

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Dataset: Chesapeake Bay CTD 2021