Dataset: PE21-18 Unbinned CTD

Name: Processed CTD data (unbinned) and station information for the PE21-18 Microbial DO respir cruise (15 total casts) aboard the R/V Pelican during April and May 2021
Published: 2021-11-08
Keywords: oceans

Cite This Dataset

DOI:10.26008/1912/bco-dmo.859612.1

Spatial Extent: N:28.8701 E:-90.4883 S:28.6074 W:-90.62202

Temporal Extent: 2021-04-27 - 2021-05-02

Project:

CAREER: Investigating aerobic microbial respiration dynamics in coastal hypoxia (Coastal O2 Respir)

Principal Investigator:

J. Cameron Thrash (University of Southern California, USC)

Contact:

J. Cameron Thrash (University of Southern California, USC)

BCO-DMO Data Manager:

Karen Soenen (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2021-11-08

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Processed CTD data (unbinned) and station information for the PE21-18 Microbial DO respir cruise (15 total casts) aboard the R/V Pelican during April and May 2021

Abstract:

Processed CTD data (unbinned) and station information for the PE21-18 Microbial DO respir cruise (15 total casts) aboard the R/V Pelican during April and May 2021.

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Archival Copy

Version Date	Archive	Persistent Identifier	Date Assigned
2021-11-08	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.26008/1912/bco-dmo.859612.1	2021-11-08

Methods & Sampling

Fifteen CTD casts were taken during the PE21-18 cruise at 5 stations. The planned stations had the following location and depth:

Station: Lat, Long, Depth (m)
C6C: 28.8686, -90.4903, 19.2
D2: 28.8417, -90.8333, 15.6
D4: 28.6083, -90.8333, 19.1
E3: 28.6583, -91.25, 22
F4: 28.7833, -91.6167, 24.2

The data was collected using a SeaBird 911 plus system with 12-12 liter Niskin bottles. The instruments included in the 911 plus suite are dual Temperature (SBE 3), dual Conductivity (SBE 4), and dual Oxygen (SBE 43) sensors. Additionally, the suite included an SBE 27 pH/Oxidation, Chelsea Aquatracka 3 Chl_a, and a Wetlabs CDOM. Serial numbers and calibration information is stored in the Header Information included in the .cnv files.

Data Processing Description

The data was processed using Seabird's SBEDataProccessing_Win32 software. The data was converted from hexadecimal to engineering units first.

Data Files

File
pe2118_ctd_unbinned.csv (Comma Separated Values (.csv), 886.15 KB) MD5:7dd8f09bb1bdc83ff8e2e1ba959ad691 Primary data file for dataset ID 859612

Supplemental Files

File
PE21-18 cruise plan filename: Cruise_Plan_Apr2021.pdf (Portable Document Format (.pdf), 1.25 MB) MD5:3e2aa0496a8b74aaf96af059ee825ce5 Cruise plan for PE21-18 cruise with cruise tracks, dates, science operation descriptions and schematics.
PE21-18 navigation plot filename: nav_plot_all_topo.png (Portable Network Graphics (.png), 12.98 KB) MD5:27c079463466eb83b67cd631892e561a PE21-18 navigation plot
PE21-18_unbinned_CTD filename: PE21-18_unbinned_CTD.zip (ZIP Archive (ZIP), 223.56 KB) MD5:f0c89794e3438d46ced4d73c48ae507c Original Seabird CTD files (.cnv) for the dataset 859612, version 1. Sensor serial numbers and calibration information is store in the header information section.

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1945279

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
PE21-18	Microbial DO respir	2021-04-27	R/V Pelican	J. Cameron Thrash (Chief Scientist)	data info

Instruments

CTD Sea-Bird SBE 911plus

Supplied Name: SeaBird 911 plus system

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: Wetlabs CDOM

Supplied Description:

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.

Niskin bottle

Supplied Name: 12-12 liter Niskin bottles

Supplied Description:

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 27 pH/O.R.P. sensor

Supplied Name: SBE 27 pH/Oxidation

Supplied Description:

Instrument Type

Generic Name: Sea-Bird SBE 27 pH/O.R.P. sensor

Acronym: SBE 27 pH/Oxidation sensor

Generic Description:

The SBE 27 pH and O.R.P. (Redox) sensor combines a pressure-balanced, glass-electrode, Ag/AgCl reference probe and platinum O.R.P. electrode to provide in-situ measurements at depths to 1200 m. The replaceable pH probe is permanently sealed and is supplied with a soaker bottle attachment that prevents the reference electrode from drying out during storage. The SBE 27 is intended for use as an add-on auxiliary sensor for profiling CTDs (SBE 9plus; SBE 19, 19plus, and 19plus V2 SeaCAT; and SBE 25 and 25plus Sealogger).

Sea-Bird SBE 43 Dissolved Oxygen Sensor

Supplied Name: dual Oxygen sensor

Supplied Description:

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

Sea-Bird SBE-3 Temperature Sensor

Supplied Name: dual Temperature (SBE 3) sensor

Supplied Description:

Instrument Type

Generic Name: Sea-Bird SBE-3 Temperature Sensor

Acronym: SBE-3 Temperature

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/134/

Generic Description:

The SBE-3 is a slow response, frequency output temperature sensor manufactured by Sea-Bird Electronics, Inc. (Bellevue, Washington, USA). It has an initial accuracy of +/- 0.001 degrees Celsius with a stability of +/- 0.002 degrees Celsius per year and measures seawater temperature in the range of -5.0 to +35 degrees Celsius. more information from Sea-Bird Electronics

Sea-Bird SBE-4 Conductivity Sensor

Supplied Name: dual Conductivity (SBE 4) sensor

Supplied Description:

Instrument Type

Generic Name: Sea-Bird SBE-4 Conductivity Sensor

Acronym: SBE-4 Conductivity

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0417/

Generic Description:

The Sea-Bird SBE-4 conductivity sensor is a modular, self-contained instrument that measures conductivity from 0 to 7 Siemens/meter. The sensors (Version 2; S/N 2000 and higher) have electrically isolated power circuits and optically coupled outputs to eliminate any possibility of noise and corrosion caused by ground loops. The sensing element is a cylindrical, flow-through, borosilicate glass cell with three internal platinum electrodes. Because the outer electrodes are connected together, electric fields are confined inside the cell, making the measured resistance (and instrument calibration) independent of calibration bath size or proximity to protective cages or other objects.

Turbidity Meter

Supplied Name: Chelsea Aquatracka 3 Chl_a

Supplied Description:

Instrument Type

Generic Name: Turbidity Meter

Generic Description:

A turbidity meter measures the clarity of a water sample. A beam of light is shown through a water sample. The turbidity, or its converse clarity, is read on a numerical scale. Turbidity determined by this technique is referred to as the nephelometric method from the root meaning "cloudiness". This word is used to form the name of the unit of turbidity, the NTU (Nephelometric Turbidity Unit). The meter reading cannot be used to compare the turbidity of different water samples unless the instrument is calibrated. Description from: http://www.gvsu.edu/wri/education/instructor-s-manual-turbidity-10.htm

(One example is the Orion AQ4500 Turbidimeter)

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
cruise	Cruise identifier	unitless	cruise_id
station	Station identifier	unitless	station
cast_number	CTD Cast number	unitless	cast
latitude	Latitude, south is negative	decimal degrees	lat
longitude	Longitude, west is negative	decimal degrees	lon
ISO_DateTime_UTC	Cast date and time (UTC) in ISO 8601 format yyyy-mm-ddTHH:MM:SSZ Format: %Y-%m-%dT%H:%M:%SZ	unitless	ISO_DateTime_UTC
depSM	Depth	m	depth
t090C	Temperature	degrees Celsius (°C)	temp
t190C	Temperature	degrees Celsius (°C)	temp
c0mS_cm	Conductivity	mS/cm	cond
c1mS_cm	Conductivity	mS/cm	cond
sal00	Salinity	PSU	sal
sal11	Salinity	PSU	sal
sbeox0Mg_L	Oxygen	mg/l	O2
sbeox1Mg_L	Oxygent	mg/l	O2
flC	Fluoresence	ug/l	fluor
wetCDOM	Fluoresence	ug/l	fluor
ph	pH	unitless	pH
orp	Oxydation reduction potential	mV	Ox_Red
flag	flag	unitless	flag
file	file	unitless	no_bcodmo_term

Status message

Database

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Dataset: PE21-18 Unbinned CTD