Dataset: Seaglider 658 Northeast US shelf and slope survey

Name: Seaglider 658 profile data from a deployment from April to August 2022 on the Northeast US shelf deployed from the R/V Armstrong cruise AR66-A
Published: 2024-11-05
Keywords: Seaglider, North Atlantic, (2749), oceans

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Spatial Extent: N:40.280105 E:-69.167727 S:38.404096 W:-72.388847

Slope Sea, North Atlantic, approximately 40°N, 70W.

Temporal Extent: 2022-04-09 - 2022-08-29

Project:

Collaborative Research: Investigating meso- and submeso-scale variability in air-sea CO2 exchange in the Gulf Stream region with autonomous platforms (Gulf Stream Glider)

Principal Investigator:

Alison Gray (University of Washington, UW)

Co-Principal Investigator:

Jaime B. Palter (University of Rhode Island, URI)

BCO-DMO Data Manager:

Amber D. York (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2024-11-05

Restricted:

Validated:

Current State:

Data not available

Seaglider 658 profile data from a deployment from April to August 2022 on the Northeast US shelf deployed from the R/V Armstrong cruise AR66-A

Abstract:

These profile data were collected by a Seaglider (serial number 658), carrying a Seabird CT0344 to measure temperature, salinity, and pressure; Aanderaa 4831IW to measure oxygen; and Wetlabs BBFL2IRB to measure optical properties of seawater (CDOM and chlorophyll fluorescence, and scattering). It profiled 561 times, typically between the surface and 1000 m (or within 10 m of the seafloor, if shallower) on the Northeast US continental shelf. The Seaglider was deployed at 2022-04-09 from 39.847459 °N, 70.731300W and last collected profiling data 2022-08-29 at 40.96°N and 70.87°W. The purpose of the deployment was to collect water column information beneath two Saildrone uncrewed surface vehicles also collecting data in the region. The project was funded by NSF-OCE, with co-PIs Alison Gray (UW), Jaime Palter and Lora Van Uffelen (URI).

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Description

This BCO-DMO dataset contains supplementary information and supporting metadata for this deployment. NetCDF files for the deployment are available at https://gandalf.gcoos.org/data/gandalf/uri/sg658/2022/2022_04_08/processed_data/nc_files/
* See the "Related Datasets" section for more details of these data holdings and archived version at NCEI accessed through NOAA OneStop.

Methods & Sampling

Seaglider 658 was deployed from the R/V Armstrong AR66-A (Cruise DOI: 10.7284/909534) and recovered from a small fishing boat in Rhode Island Sound.

All data were collected by factory-calibrated sensors carried by the Seaglider. Calibration files and characterization sheets for sensors are available under "Supplemental Files" of this dataset page.

Many sensor and engineering parameters are available in the self-describing netcdfs at https://gandalf.gcoos.org/data/gandalf/uri/sg658/2022/2022_04_08/processed_data/nc_files/
* See the "Related Datasets" section for more details of these data holding and archived version at NCEI accessed through NOAA OneStop.

Some examples of the sensor data are:

"pressure". [dbar]. Uncorrected sea-water pressure at pressure sensor
"temperature". [deg C] Temperature (in situ) corrected for thermistor first-order lag
"conductivity". [S/m] Conductivity corrected for anomalies
"Salinity" [PSU] Salinity corrected for thermal-inertia effects (PSU)
"aanderaa4831_dissolved_oxygen" [umol/kg] Dissolved oxygen concentration, calculated from optode tcphase corrected for salinity and depth

(see supplemental file "NetCDF header information" for more information about the structure and contents of the netCDF files.

Problems/Issues

No known problems.

Data Processing Description

Binary files were internally logged on the Seaglider. These were converted to self-describing netcdf files (one per profile) and uploaded to the Gandalf server https://gandalf.gcoos.org/. No additional post processing was performed on these data.

Data were archived at NCEI after the mission was marked as completed. "sg658-20220408T0000" https://data.noaa.gov/onestop/collections/details/4f9132fd-d275-4035-8ded-45e4c6f66f5e (See "Related Datasets" section for more details).

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-2148276

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
AR66-A		2022-04-08	R/V Neil Armstrong	Albert Plueddemann (Chief Scientist)	data info

Instruments

Aanderaa 4831F (fast-response) oxygen optode

Supplied Name: Aanderaa 4831IW, serial number 747

Supplied Description:

Instrument Type

Generic Name: Aanderaa 4831F (fast-response) oxygen optode

Acronym: Aanderaa 4831F

Generic Description:

A stand-alone oxygen optode with integrated temperature sensor, manufactured by Aanderaa. This instrument exploits the physio-chemical principle of dynamic fluorescence quenching to measure absolute oxygen concentration and percent saturation. Depth rating: 300 m, 3000 m or 6000 m; oxygen concentration accuracy of < 8 uM or 5 %, and resolution of < 1 uM; air saturation accuracy of < 5 %, and resolution of 0.4 %; response time (63 %): < 8 s.

CTD Sea-Bird 41

Supplied Name: Seabird CTD, serial number 0344

Supplied Description:

model extracted from profile .nc metadata instrument_ctd:make_model = "Seabird SBE41"

Instrument Type

Generic Name: CTD Sea-Bird 41

Acronym: CTD SBE 41

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/130/

Generic Description:

The Sea-Bird SBE 41 CTD module was originally developed in 1997 for integration with sub-surface oceanographic floats. It uses MicroCAT Temperature, Conductivity, and Pressure sensors.

Pressure Sensor

Supplied Name: Kistler Piezoresistive Pressure Sensor 4260M091, serial number 5023276

Supplied Description:

Instrument Type

Generic Name: Pressure Sensor

Generic Description:

A pressure sensor is a device used to measure absolute, differential, or gauge pressures. It is used only when detailed instrument documentation is not available.

WETLabs ECO FLBB scattering fluorescence sensor

Supplied Name: Wetlabs BBFL2IRB, serial number 5366

Supplied Description:

Instrument Type

Generic Name: WETLabs ECO FLBB scattering fluorescence sensor

Acronym: WETLabs ECO FLBB

Generic Description:

A dual-optical-sensor that carries a single-wavelength chlorophyll fluorometer (470nm ex/695nm em) and backscattering sensor (700 nm) that measures phytoplankton and particle concentration. It operates by using blue (470nm) and red (700 nm) LEDs that alternately flash. The blue LED stimulates chlorophyll fluorescence in plants while the red light illuminates the total particle field. The backscattering sensor has an in-water centroid angle of 142 degrees and can be calibrated to measure turbidity. The fluorometer can typically measure phytoplankton concentrations in the range 0-30 ug/l, with a sensitivity of 0.015 ug/l. The backscattering sensor can measure within the range 0-3 m-1, with a sensitivity of 0.0015 m-1. The instrument output in the standard version is digital and uses a low power mode and stores data. Other variants are used. The instrument is rated to a depth of 600m as standard, with the options of deeper instruments rated up to 6000m and instruments with bio-wipers, rated to 300 m.

This instrument comes in the following optional models: FLbb(RT), FLbb(RT)D, FLbbB, FLbbS, FLbbBS, FLbb2k. Refer to the datasheet from the manufacturer: https://www.seabird.com/asset-get.download.jsa?id=55460873804

Parameters

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Dataset: Seaglider 658 Northeast US shelf and slope survey