Dataset: CTD

Name: CTD data collected on three NSF RAPID Plankton cruises on R/V Point Sur and R/V Pelican in the Gulf of Mexico during 2017-2018
Published: 2020-11-02
Keywords: oceans

Cite This Dataset

DOI:10.26008/1912/bco-dmo.827969.1

Spatial Extent: N:29.30622 E:-93.68694 S:27.31797 W:-95.20932

Temporal Extent: 2017-11-03 - 2018-03-22

Project:

Collaborative Research: RAPID-HARVEY: Response of plankton assemblages and trophodynamics to a historic, hurricane-induced floodwater plume in a subtropical, pelagic environment (RAPID Plankton)

Principal Investigator:

Beth Stauffer (University of Louisiana at Lafayette)

Co-Principal Investigator:

Simon Geist (Texas A&M, Corpus Christi, TAMU-CC)

Kelly L. Robinson (University of Louisiana at Lafayette)

Astrid Schnetzer (North Carolina State University, NCSU)

Student:

Gulce Kurtay (University of Louisiana at Lafayette)

Contact:

Kelly L. Robinson (University of Louisiana at Lafayette)

BCO-DMO Data Manager:

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

Version:

Version Date:

2020-11-02

Restricted:

Validated:

Yes

Current State:

Final no updates expected

CTD data collected on three NSF RAPID Plankton cruises on R/V Point Sur and R/V Pelican in the Gulf of Mexico during 2017-2018

Abstract:

This dataset includes processed CTD data collected during three NSF RAPID Plankton cruises. RAPID Plankton Cruise 1 took place on R/V Point Sur, cruise number PS1813, from October 28-November 3, 2017. RAPID Plankton Cruise 2 took place on R/V Pelican, cruise number PE18-18, from January 6- 12, 2018. RAPID Plankton Cruise 3 took place on R/V Pelican, cruise number PE18-21, from March 19- 23, 2018. Data were collected at 10 stations on each cruise.

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Archival Copy

Version Date	Archive	Persistent Identifier (PID)	Date PID Issued
2020-11-02	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.26008/1912/bco-dmo.827969.1	2021-08-05

Description

Data collected during three NSF RAPID Plankton cruises.

RAPID Plankton Cruise 1 took place on R/V Point Sur, cruise number PS1813, from October 28-November 3, 2017. CTD data are reported from 10 stations.

RAPID Plankton Cruise 2 took place on R/V Pelican, cruise number PE18-18, from January 6- 12, 2018. CTD data are reported from 10 stations.

RAPID Plankton Cruise 3 took place on R/V Pelican, cruise number PE18-21, from March 19- 23, 2018. CTD data are reported from 10 stations.

Methods & Sampling

On each cruise, the CTD was lowered to within 10m of the bottom, or to the target max depth at standard speeds (30m/min first 100m, 60m/min thereafter). Water samples were collected in Niskin bottles during the upcast. CTD cast ended at approx. 2-5m, which counted as the surface for each cast.

Known Problems:
RAPID Plankton Cruise 1 (PS1813): Station 10, parameter (CDOM) malfunction observed.
RAPID Plankton Cruise 3 (PE18-21): Stations [6-10] WETLabs sensor applied for fluorescence parameter; Stations [1-5] Seapoint sensor applied for fluorescence parameter; Fluorecence sensor changed due to the malfunction of sensor during cruise.

Data Processing Description

Data Processing:
SBE Data Processing Software Version 7.26.7, from Sea-Bird Scientific was used to convert and bin the data.
Upcast and downcast of hex files converted into cnv file. Converted cnv files binned by using downcast with 0.2 m depth bin.

BCO-DMO Processing:
- concatenated data from all 3 cruises into one dataset;
- re-named fields to conform with BCO-DMO naming conventions;
- added Cruise_ID column;
- added Cast column.

Data Files

File
CTD.csv (Comma Separated Values (.csv), 4.89 MB) MD5:be7e5b5e132d8a13c39b39488fb48793 Primary data file for dataset ID 827969

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1760704
NSF Division of Ocean Sciences	OCE-1760674
NSF Division of Ocean Sciences	OCE-1760465

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
PE18-18	RPD-2	2018-01-06	R/V Pelican	Beth Stauffer (Chief Scientist)	data info
PE18-21	RPD-3	2018-03-18	R/V Pelican	Simon Geist (Chief Scientist) Astrid Schnetzer (Co-Chief Scientist)	data info
PS1813	RPD-1	2017-10-28	R/V Point Sur	Kelly L. Robinson (Chief Scientist)	data info

Instruments

CTD Sea-Bird SBE 911plus

Supplied Name: Seabird 9-11 Plus CTD rosette

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 Name: Fluorometer, WET,Labs

Supplied Description:

WETLabs Fluorometer used on PS1813 cruise; and on PE-18-21 cruise at stations 6-10.

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.

Fluorometer

Supplied Name: Fluorometer, Chelsea, Aqua 3

Supplied Description:

Fluorometer used on cruise PE18-18.

Instrument Type

Generic Name: Fluorometer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/113/

Generic Description:

Fluorometer

Supplied Name: Fluorometer Seapoint

Supplied Description:

Fluorometer used on cruise PE18-21 at stations 1-5.

Instrument Type

Generic Name: Fluorometer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/113/

Generic Description:

LI-COR Biospherical PAR Sensor

Supplied Name: Biospherical/Licor

Supplied Description:

Instrument Type

Generic Name: LI-COR Biospherical PAR Sensor

Acronym: LI-COR Biospherical PAR

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0074/

Generic Description:

The LI-COR Biospherical PAR Sensor is used to measure Photosynthetically Available Radiation (PAR) in the water column. This instrument designation is used when specific make and model are not known.

Sea-Bird SBE 43 Dissolved Oxygen Sensor

Supplied Name: SBE43

Supplied Description:

SBE43: Dissolved oxygen sensors, Owens-Millard Calibration coefficient applied

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 {Sea-Bird WETLabs} C-Star transmissometer

Supplied Name: Transmissometer, WET Labs, C-Star

Supplied Description:

Instrument Type

Generic Name: WET Labs {Sea-Bird WETLabs} C-Star transmissometer

Acronym: WL CSTAR Trans

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0160/

Generic Description:

The C-Star transmissometer has a novel monolithic housing with a highly intgrated opto-electronic design to provide a low cost, compact solution for underwater measurements of beam transmittance. The C-Star is capable of free space measurements or flow-through sampling when used with a pump and optical flow tubes. The sensor can be used in profiling, moored, or underway applications. Available with a 6000 m depth rating.

More information on Sea-Bird website: https://www.seabird.com/c-star-transmissometer/product?id=60762467717

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
Cruise_ID	Cruise identifier	unitless	cruise_id
Cast	Cast number	unitless	cast
Station	Station number	unitless	station
Depth	Depth	meters	depth
Latitude	Latitude	degrees North	lat
Longitude	Longitude	degrees East	lon
Potential_Temperature1	Potential temperature, primary	degrees Celsius	potemp
Potential_Temperature2	Potential temperature, secondary	degrees Celsius	potemp
Salinity_Practical1	Practical salinity, primary	PSU	sal
Salinity_Practical2	Practical salinity, secondary	PSU	sal
Oxygen_SBE1	Dissolved oxygen measured by SBE43, primary	milliliters per liter (ml/l)	O2
Oxygen_SBE2	Dissolved oxygen measured by SBE43, secondary	milliliters per liter (ml/l)	O2
Oxygen_pcnt_sat1	Percent oxygen saturation, primary	unitless (percent)	O2sat
Oxygen_pcnt_sat2	Percent oxygen saturation, secondary	unitless (percent)	O2sat
Fluorescence_WET_CDOM	Colored dissolved organic matter (CDOM)	milligrams per cubic meter (mg/m^3)	CDOM
Fluorescence_WET	Fluorescence measured by WETLabs sensor	milligrams per cubic meter (mg/m^3)	fluor
Fluorescence_Chelsea	Fluorescense measure by Chelsea sensor	micrograms per liter (ug/l)	fluor
Fluorescence_Seapoint	Fluorescence measured by Seapoint sensor	micrograms per liter (ug/L)	fluor
Beam_Attenuation	Beam attenuation	1/m	beam_cp
Beam_Transmission	Transmission	unitless (percent)	light_trans
PAR_Irradiance	Photosynthetically active radiation	micromoles photons per square meter per second (umol photons m-2 s-1)	PAR
SPAR	Surface photosynthetically active radiation	micromoles photons per square meter per second (umol photons m-2 s-1)	SPAR
Altimeter	Altimeter reading	meters (m)	altitude
Density1	Density, primary	kilograms per cubic meter (kg/m^3)	density
Density2	Density, secondary	kilograms per cubic meter (kg/m^3)	density
Oxygen_raw1	Raw oxygen, primary	volts	O2_v
Oxygen_raw2	Raw oxygen, secondary	volts	O2_v
Conductivity1	Conductivity, primary	Siemens per meter (S/m)	cond
Conductivity1_2	Conductivity, primary (duplicate)	Siemens per meter (S/m)	cond
Conductivity_2	Conductivity, secondary	Siemens per meter (S/m)	cond
Bottles_Fired	Number of bottles fired	unitless	numb_obs
flag	Flag	unitless	q_flag
Start_ISO_DateTime_UTC	Start date and time of cast (UTC) Format: yyyy-MM-ddTHH:mm:ssZ	unitless	ISO_DateTime_UTC

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Dataset: CTD