Davis Strait 2022

Ship

RV Neil Armstrong

Vehicles

Cruise Party

Kumiko Azetsu-Scott: Principal Investigator
Bedford Institute of Oceanography
+1 902 426 8572
Azetsu-ScottK@mar.dfo-mpo.gc.ca

Thomas Juul-Pedersen: Principal Investigator
Greenland Institute of Natural Resources
+1 123 456 7890
thpe@natur.gl

Craig Lee: Chief Scientist, Principal Investigator
Applied Physics Laboratory, University of Washington 1013 NE 40th St Seattle, WA USA 98105
+1 206 685 7656
craiglee@uw.edu

Kate Stafford: Principal Investigator
Oregon State University
+1 206 852 7188
kate.stafford@oregonstate.edu

Departure: Nuuk on Oct 1, 2022

Arrival: Nuuk on Oct 23, 2022

Mobilization Date: Sep 28, 2022

Demobilization Date: Oct 24, 2022

Supporting documentation:

Operations Area: Baffin Bay and Nortern Labrador Sea

Lat/Lon:

Depth Range: min / max (m)

Will the vessel be operating within 200 NM of a foreign country? Canada (Nunavut), Greenland
Are visas or special travel documents required? no

Science objectives

The Davis Strait observatory is a long-term program, started in 2004, focused on documenting and understanding the exchanges  between the Arctic Ocean and the North Atlantic. Davis Strait Gateway observations are crucial to address several high-priority science objectives, including: (1) Quantifying change in Arctic freshwater and heat balances, (2) Understanding the interactions between Arctic change and global climate, (3) Documenting changes in Arctic Ocean acidification and potential impacts on subpolar oceans and (4) Establishing a sustained, international integrated Arctic Observing Network. These observations aim to quantify changes in water mass characteristics, volume and freshwater fluxes, freshwater constituents, carbon variables and biological variability. The measurements will also be used to investigate the mechanisms that control transport variability through the Canadian Arctic Archipelago (CAA), and the impacts of these exchanges on deepwater formation rates, Atlantic Meridional Overturning Circulation strength, ocean acidification, and the heat and freshwater balances of the Arctic Ocean. Acoustic recorders will document atmospheric, anthropogenic and biogenic (marine mammal) seasonal and interannual variability in ambient noise in Davis Strait. Marine ecosystem components from plankton to whales will explore how environmental changes influence the presence and phenology of multiple trophic levels.

Science Activities

Recover 13 moorings - 12 across Davis Strait and 1 bottom prerrure recorder in central Baffin Bay.
Deploy 13 moorings - 12 across Davis Strait and 1 bottom prerrure recorder in central Baffin Bay.
Occupy sampling lines for CTD and biological (nets tows) sampliny:

• Mooring Line
• Northern Line
• Labrador Sea - West, Central and East
• additonal lines as time allows

Locations provided in attached document.

Pre-cruise planning meeting: Teleconference

Stations:

Funding Agency: NSF #OPP-1902595

- added NSF #OPP-1902595 on Jun 15, 2022 6:54 PM by
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R/V Armstrong

Shipboard Equipment

Bathymetry System 12 kHz
ADCP 300 kHz
Sippican XBT System (Mark 21)
Bathymetry System 3.5 kHz
ADCP 150 kHz
A-Frame
Deionized Water System
Science Underway Seawater System
12 kHz Pinger for Wire Use
Fume Hood
EM122 (12 kHz) Multibeam Echosounder
Dynamic Positioning System
ADCP 38 kHz
Crane


Shipboard Equipment Notes:

Shipboard Communication

Basic Internet access via HiSeasNet
Is there a need to receive data from shore on a regular basis?
Is there a need to transfer data to shore on a regular basis?


Shipboard Communication Notes: Possible need for ship-shore data transfers.

CTD/Water Sampling

Wet Labs ECO-AFL fluorometer
Wet Labs C*Star transmissometer (660nm wavelength)
SBE43 oxygen sensor
911+ Rosette 24-position, 10-liter bottle Rosette with dual T/C sensors
Biospherical underwater PAR (1000m depth limit) with reference Surface PAR
Wet Labs FLNTURTD Combination Flourometer and Turbidity Sensor

Critical CTD Sensors:  science-supplied CDOM fluorometer

MET Sensors

Barometric Pressure
Air temperature
Precipitation
Relative Humidity
Wind speed and direction
Short Wave Solar Radiation
Long Wave Solar Radiation

Sample Storage

Freezer -70°C 25 cu. ft.
Freezer -70°C 3.2 cu. ft. ea.
Scientific Walk-in Freezer
Scientific Walk-in Refrigerator


Storage Notes:

Navigation

GPS

Navigation Notes:

Winches

Trawl Winch with 9/16th trawl wire
UNOLS Winch Pool

Winch Notes: Will need TSE or Hawboldt mooring winch. Current understanding is that this will be aboard for the cruise prior to ours, and that we will continue using it for our operations.
Second winch and conducting wire will be needed for science-supplied multi net system.
Trawl wire might be needed for horizontal net tows for fish larvae.

Wire use and application

CTD Winch with .322" Electro-mechanical wire
Trawl Winch with 9/16th trawl wire
3/8" Hydro Wire


Wire Notes: As above - in addtion to CTD rosette, wires will be needed for multi net and trawl nets.

Slip ring required? no	Number of conductors:
Non-standard wire required? no	Type:
Traction winch required? no	Describe:

Portable Vans

Isotope Van

Other Science Vans:

Other Science Vans:

Science Van 1
Type/size: 20' hardtop container		Location: main deck?
Water: NA		Power:NA

Over the Side Equipment

Will you be bringing any equipment (winches, blocks, etc.) that lowers instruments over the side? yes

Details: We may bring blocks for mooring operations.

Special Requirements

Elecrical Power: no	Identify:
Equipment Handling: no	Identify:
Inter/intraship Communications: no	Identify:
Science Stowage: no	Identify:
Water: no	Identify:

Additional Cruise Items/Activities

Explosive Devices: no Portable Air Compressors: no Flammable Gases: no

Small Boat Operations: no SCUBA Diving Operations: no

Hazardous Material

Will hazardous material be utilized? yes

Describe deployment method and quantity:
Will compile list.

Radioactive Material

Radioiosotopes: yes

Additional Information

Is night time work anticipated on this cruise? yes

Specialized tech support (Seabeam, coring, other):  Mooring recoveries are daylight operations.
All other operations would proceed on a 24h basis.

Other required equipment and special needs: 
Date Submitted: Jun 15, 2022 7:17 PM