Dataset: 2017 Wire Flyer CTD data

Name: CTD data from 12 Wire Flyer deployments conducted on R/V Sikuliaq cruise SKQ201701S in the Eastern Tropical North Pacific from January to February 2017
Published: 2021-09-01
Keywords: oceans

Cite This Dataset

DOI:10.26008/1912/bco-dmo.859947.1

Spatial Extent: N:22.604527 E:-117.008986 S:21.222493 W:-118.591766

Temporal Extent: 2017-01-25 - 2017-02-12

Project:

Collaborative Research: A metabolic index to predict the consequences of climate change for midwater ecosystems (Metabolic Index)

Principal Investigator:

Christopher Neil Roman (University of Rhode Island, URI)

BCO-DMO Data Manager:

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

Version:

Version Date:

2021-09-01

Restricted:

Validated:

Yes

Current State:

Final no updates expected

CTD data from 12 Wire Flyer deployments conducted on R/V Sikuliaq cruise SKQ201701S in the Eastern Tropical North Pacific from January to February 2017

Abstract:

This dataset includes CTD data from 12 Wire Flyer deployments conducted on R/V Sikuliaq cruise SKQ201701S in the Eastern Tropical North Pacific from January to February 2017.

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Archival Copy

Version Date	Archive	Persistent Identifier	Date Assigned
2021-09-01	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.26008/1912/bco-dmo.859947.1	2022-05-03

Methods & Sampling

Data were collected on R/V Sikuliaq cruise SKQ201701S in the Eastern Tropical North Pacific during January and February 2017. These data are reported directly from the sensor or were calculated using the seawater toolbox. The data have not been corrected for any time lags. Temperature, salinity, and depth are from a Seabird 49 Fast-CAT CTD.

These data have not been processed to any significant extent. The latitude and longitude positions reported are for the Wire Flyer vehicle, and not the ship. This position was calculated using measurements of the clump weight depth and the wire payout. Refer to the Supplemental Files for more information on the Wire Flyer.

Data Processing Description

BCO-DMO Processing:
- concatenated data from 12 separate files into one dataset;
- replaced "NaN" with "nd" (no data);
- created new column "deployment_id" (based on original file name);
- converted date/time field to ISO8601 format.

Data Files

File
ctd_2017.csv (Comma Separated Values (.csv), 1.02 GB) MD5:00bde351174a3aa239090d3d02b614b7 Primary data file for dataset ID 859947

Supplemental Files

File
SKQ201701S Wire Flyer Summary Plots filename: summary_plots.zip (ZIP Archive (ZIP), 16.49 MB) MD5:81e1ebe72d60bf253110a9aa93a5fc21 Summary plots of data from 12 Wire Flyer deployments conducted on R/V Sikuliaq cruise SKQ201701S. There is one PDF for each deployment. The file naming convention is YYYYMMDD_HHMMSS, set at the start of the deployment, e.g. 20170125_151748. The times are all in GMT, not local time.
Wire Flyer Launch and Recover Document filename: flyer_launch_and_recover_document.pdf (Portable Document Format (.pdf), 7.26 MB) MD5:f9274b8c8b003b9a39083191e4f2c76b Document describing the Wire Flyer launch and recovery procedures.
Wire Flyer Overview 2019 filename: Wire_flyer_overview_2019.pdf (Portable Document Format (.pdf), 15.84 MB) MD5:7c3c14f839142f115c5aa467894395d7 Slides from a presentation by Christopher Roman titled "The Wire Flyer vehicle system and high resolution hydrographic sections".

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1458967

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
SKQ201701S		2017-01-19	R/V Sikuliaq	Brad Seibel (Chief Scientist)	data info

Instruments

Sea-Bird SBE 49 FastCAT CTD Sensor

Supplied Name: Seabird 49 Fast-CAT CTD

Supplied Description:

Instrument Type

Generic Name: Sea-Bird SBE 49 FastCAT CTD Sensor

Acronym: SBE-49

Generic Description:

The SBE 49 FastCAT is a CTD sensor for use in autonomous platforms. It contains a SBE 3P temperature sensor, a SBE 4C conductivity sensor and a strain-gauge pressure sensor as standard. It can operate in autonomus (16 Hz per sec) or polled mode (transmits each sample). The sensor is depth-rated to 350 m (plastic housing) or 7000 m (titanium housing). Accuracy: +/- 0.002 deg C (temperature), +/- 0.0003 S/m (conductivity), 0.1% of full scale range (pressure).

Wire Flyer Towed Profiling System

Supplied Name: Wire Flyer

Supplied Description:

Instrument Type

Generic Name: Wire Flyer Towed Profiling System

Acronym: Wire Flyer

Generic Description:

Description from Roman et al. (2019):
The Wire Flyer towed vehicle is a platform able to collect high-resolution water column sections. The vehicle is motivated by a desire to effectively capture spatial structures at the submesoscale. The Wire Flyer profiles up and down along a ship-towed cable autonomously using controllable wings for propulsion. At ship speeds between 2 and 5 kt (1.02–2.55 m s−1), the vehicle is able to profile over prescribed depth bands down to 1000 m. The vehicle carries sensors for conductivity, temperature, depth, oxygen, turbidity, chlorophyll, pH, and oxidation reduction potential. During normal operations, the vehicle is typically commanded to cover vertical regions between 300 and 400 m in height with profiles that repeat at kilometer spacing. The vertical profiling speed can be user-specified up to 150 m min−1. During operations, an acoustic modem is used to communicate with the vehicle to provide status information, data samples, and the ability to modify the sampling pattern.

Detailed information can be found in the following publication:
Roman, C., Ullman, D. S., Hebert, D., & Licht, S. (2019). The Wire Flyer Towed Profiling System. Journal of Atmospheric and Oceanic Technology, 36(2), 161–182. doi:10.1175/jtech-d-17-0180.1

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
deployment_id	identifier for the deployment; indicates the start date and time of deployment in format: YYYYMMDD_hhmmss (time zone is GMT)	unitless	deployno
pressure	pressure	decibars (db)	press
temperature	temperature	degrees Celsius	temp
soundVelocity	sound velocity	meters per second (m/s)	sound_vel
timestamp	time stamp in microunix seconds	microunix seconds	time
conductivity	conductivity	siemens (S)	cond
salinity	salinity	psu	sal
datestring	date-time string (GMT) in format where xxx represent milliseconds: YYYY-MM-DD hh:mm:ss.xxx	unitless	DateTime
ISO_DateTime_UTC	date-time string converted to ISO8601 format: YYYY-MM-DDThh:mm:ss.xxxxxxZ. Note that data are accurate to milliseconds (not microseconds) Format: %Y-%m-%dT%H:%M:%S.%fZ	unitless	ISO_DateTime_UTC
lat	latitude	degrees North	lat
lon	longitude	degrees East	lon

Status message

Database

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Dataset: 2017 Wire Flyer CTD data