Davis Strait 2015

Ship

R/V Atlantis

Vehicles

Cruise Party

Craig Lee: Chief Scientist, Principal Investigator
Applied Physics Laboratory, University of Washington 1013 NE 40th St Seattle, WA USA 98105-6698
+1 206 685 7656
craig@apl.washington.edu

Departure: Nuuk, Greenland on Sep 6, 2015

Arrival: Nuuk, Greenland on Sep 25, 2015

Mobilization Date: Sep 3, 2015

Demobilization Date: Sep 26, 2015

Supporting documentation:

»DS2015_MSR_Charts.pdf

Operations Area: Northern Labrador Sea to Southern Baffin Bay

Lat/Lon:

Depth Range: 50 / 3000

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

Science objectives

As part of a coordinated international effort to quantify (and eventually monitor) the variability of fluxes connecting the Arctic and Atlantic Oceans and to understand the role played by the Arctic and sub-Arctic in steering decadal scale climate variability, an integrated observing system will provide year-round measurements of volume, liquid freshwater and ice fluxes across Davis Strait. Fluxes through the Strait represent the net integrated Canadian Archipelago throughflow, modified by terrestrial inputs and oceanic processes during its southward transit through Baffin Bay. By the time they reach Davis Strait, Arctic waters already embody most of the transformations they undergo prior to exerting their influence on the deepwater formation sites in the Labrador Sea. This makes the Strait an ideal site for monitoring temporal and spatial variability in the critical upstream boundary condition for Labrador Sea convection. Measurements at Davis Strait will be used to study how fluctuations in the Arctic freshwater system modulate deep water formation to the south, thus influencing the associated meridional overturning circulation (MOC).

Science Activities

1. Service mooring array (15 elements deplyed across Davis Strait).
2. Conduct exrensive hydrographic survey extending from the nothern Laborador Sea into southern Baffin Bay
3. Marine mammal observations
4. (tentative) Deploy long-range glider at Davis Strait

Pre-cruise planning meeting: Teleconference

Will be at WHOI 20-21 July for OCB meeting. Could come by during that period.

Stations:

Funding Agency: NSF #ARC-1022472

- added NSF #ARC-1022472 on Jun 30, 2015 12:50 PM by
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R/V Atlantis

Shipboard Equipment

Bathymetry System 12 kHz
ADCP 75 kHz
Deionized Water System
Science Underway Seawater System
Navigation - Heading
Multibeam
Fume Hood
Navigation - Position

Shipboard Communication

Basic Internet access via HiSeasNet

CTD/Water Sampling

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

Critical CTD Sensors: 

MET Sensors

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

Sample Storage

Freezer -70°C 25 cu. ft.
Freezer -70°C 3.2 cu. ft. ea.
Refrigerator 8.6 cu. ft.
Scientific Walk-in Freezer


Storage Notes:

Navigation

Will you be using Long Base Line (LBL) navigation? no

Will you be using Ultra-short baseline (USBL) navigation for other than Alvin operations? no

Navigation

GPS

Navigation Notes:

Winches

CTD Winch with .322" Electro-mechanical wire
Mooring / TSE winch

Winch Notes:



Wire Notes:

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

Other Science Vans:

Specialized Deck Equipment

Mooring Deployment/Recovery Equipment Required: no	Type:
Cruise Specific Science Winch Required: no	Type:
Nets Required: no	Type:

Over the Side Equipment

Will you be bringing any equipment (winches, blocks, etc.) that lowers instruments over the side? no

Special Requirements

Elecrical Power: no	Identify:
Equipment Handling: no	Identify:
Inter/intraship Communications: no	Identify:
Science Stowage: yes	Identify: transport of science gear to and from WHOI on a not-to-interfere basis with the Weller cruise.
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:
LI primary battteries (moored instruments, gliders)

Radioactive Material

Radioiosotopes: yes

Additional Information

Is night time work anticipated on this cruise? yes

Specialized tech support (Seabeam, coring, other): 

Other required equipment and special needs: 
Date Submitted: Jun 30, 2015 12:59 PM