Dataset: CTD casts - Pelican 17-02

Name: Depth-binned CTD casts from Pelican PE17-02 on the Louisiana Shelf, Gulf of Mexico in July-August 2016 (Methane cycling in OMZs project)
Published: 2017-01-27
Keywords: oceans

Cite This Dataset

DOI:10.26008/1912/bco-dmo.679374.1

Spatial Extent: N:29.3013 E:-89.5967 S:27.6953 W:-92.8012

Temporal Extent: 2016-07-23 - 2016-08-02

Project:

Microbial processes of pelagic anaerobic methane cycling in oxygen minimum zones (Methane cycling in OMZs)

Principal Investigator:

Frank James Stewart (Georgia Institute of Technology, GA Tech)

Co-Principal Investigator:

Dr Jennifer B. Glass (Georgia Institute of Technology, GA Tech)

BCO-DMO Data Manager:

Nancy Copley (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Theresa McKee (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2017-01-27

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Data URL:

https://www.bco-dmo.org/dataset/679374/data

Depth-binned CTD casts from Pelican PE17-02 on the Louisiana Shelf, Gulf of Mexico in July-August 2016 (Methane cycling in OMZs project)

Abstract:

Depth-binned CTD casts from Pelican PE17-02 on the Louisiana Shelf, Gulf of Mexico in July-August 2016.

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Archival Copy

Version Date	Archive	Persistent Identifier	Date Assigned
2017-01-27	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.26008/1912/bco-dmo.679374.1	2021-02-24

Processing Description

Using the SeaBird data processing software, with the following steps applied:
            - Filter: applied to the pressure data only (low pass 0.15s)
            - Alignment: applied to the oxygen data only (using a value of 3)
            - Loop edit: to mark and remove scans when the CTD is moving less than minimum velocity (set at 0.2 m/s)
            - Binned: into 1m depth bins (Bd) and by time (Bt)

BCO-DMO Processing Notes:

Data were received as one-meter bin averaged Seabird CTD .cnv files. For station 1, the fluorometer data were bad and the sensor was replaced for the remaining stations, which recorded PAR and fluorescence. The fluor field was flagged with "nd" for bad data for station 1. Extraneous parameters used for acquisition purposes were hidden.

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1558916

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
PE17-02		2016-07-23	R/V Pelican	Frank James Stewart (Chief Scientist)	data info

Instruments

CTD Sea-Bird SBE 911plus

Supplied Name: Seabird CTD

Supplied Description:

Conductivity, Temperature, Depth (CTD) sensor package from SeaBird Electronics, no specific unit identified. This instrument designation is used when specific make and model are not known. See also other SeaBird instruments listed under CTD. More information from Sea-Bird Electronics.

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: WET Labs ECO CDOM Fluorometer

Supplied Description:

A CTD-fluorometer is an instrument package designed to measure hydrographic information (pressure, temperature and conductivity) and chlorophyll fluorescence.

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.

LI-COR Biospherical PAR Sensor

Supplied Name: PAR/Irradiance

Supplied Description:

The LI-COR Biospherical PAR Sensor is used to measure Photosynthetically Available Radiation (PAR) and irradiance (SPAR) in the water column.

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 Oxygen Sensor

Supplied 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

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

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
cast	number of cast	dimensionless	cast
cruise_id	cruise identifier	dimensionless	cruise_id
year	year reported as yyyy	dimensionless	year
lat	latitude	decimal degrees	lat
lon	longitude	decimal degrees	lon
mon	month reported as mm	dimensionless	month
day	day reported as dd	dimensionless	day
time	start time of cast reported as hhmm	dimensionless	time
ISO_DateTime_UTC	UTC date and time ISO formatted	YYYY-MM-DDTHH:MM:SS[.xx]Z	ISO_DateTime_UTC
yrday_utc	UTC day and decimal time	dimensionless	yrday_utc
depth	sampling depth	meters	depth
press	sampling pressure	decibars	press
temp	temperature	degrees Celsius	temp
sal	salinity	PSU	sal
potemp	potential temperature	degrees Celsius	potemp
sigma_0	potential density: sigma-theta; takes into account adiabatic heating/cooling with changes in pressure.	kilograms/meter^3-1000	sigma_0
O2_sat_pcnt	oxygen concentration	percent	O2_sat_pcnt
O2_umol_kg	dissolved oxygen concentration	micromoles/kg	O2_umol_kg
PAR	Photosynthetically Available Radiation	uE/m^2/sec	PAR
fluor	fluorescence	milligrams/meter^3	fluor

Database

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Dataset: CTD casts - Pelican 17-02