AT43: Graff "EXPORTS"

Ship

R/V Atlantis

Cruise Party

Jason Graff: Chief Scientist, Principal Investigator Oregon State Univeristy USA +1 541 737 4090 jrgraff@science.oregonstate.edu Debbie Steinberg: Chief Scientist, Principal Investigator Virginia Institute of Marine Science United States +1 804 684 7838 debbies@vims.edu

Departure: Apr 14, 2020
Woods Hole
Arrival: May 31, 2020
Woods Hole
Operations Area
Northeast Atlantic Ocean near the Porcupine Abyssal Plain Long-term Monitoring site
Lat/Lon: 45° 0.0′ N / 17° 0.0′ W
Depth Range: 0 m / 3000 m
Will the vessel be operating within 200 NM of a foreign country?	no
Science Objectives
EXport Processes in the Ocean from Remote Sensing (EXPORTS) is a large-scale NASA-led field campaign that will provide critical information for quantifying the export and fate of upper ocean net primary production (NPP) using satellite observations and state of the art ocean technologies. Our objectives while at sea are to measure stocks of organisms, chemistry, particles and the pathways regulating the export of carbon from the surface ocean to the deeper twilight zone.
Science Activities
Multiple overboard operations including CTD rosette casts, trace metal clean CTD and tow fish, MOCNESS tows, zooplankton net tows, neutrally buoyant (no surface expression) and surface tethered sediment traps, wire-walker package with surface expression, optics packages, and marine snow catchers with potential deployments of other autonomous assets such as a BioArgo float.  On-deck and lab activities will include the use of multiple (9?) on-deck incubators with flowing surface seawater as well as re-circulating incubators chilled to temperatures found at deeper depths, use of the ship's flow-through seawater system (diaphragm pump provided by the science party) for continuous optical, chemical, and semi-continous biological measurements, use of the walk-in temperature control rooms for sample storage and experiments, additional small volume incubations in multiple lab spaces, a trace metal clean "bubble", and a multitude of general and specialized scientific equipment.  Two rad vans will be used for measuring radioisotopes used in incubations and a general purpose an will be used by multiple groups related to the on-deck incubations.  A trace metal clean van will be used in conjunction with the trace metal clean CTD rosette. All vans will require water and power. This work will be conducted while coordinating with two other vessels working within the NASA EXPORTS framework (HMS Discovery) and the Woods Hole Twilight Zone Project (Sarmiento de Gamboa).  The Atlantis will serve as the "Process" ship and will work with a lagrangian approach following deployed assets (either previously deployed before our arrival or deployed during this cruise), while the Discovery will conduct wider surveys of the surrounding waters.  We will occasionally "meet up" with the other ships to perform simultaneous measurements necessary for instrument intercalibrations.
Additional Info
Pre-cruise Planning Meeting: Teleconference
Meeting Notes: Scheduled for Wednesday November 6.
Stations:
Supporting documentation:
»Atlantis_Deck_Plan_EXPORTS_prelim_shared.pdf
»Lab_space_diagram_prelim_shared.pdf
»ExamplePicsExports.pptx
»EXPORTS_prelim_berthing_roster.pdf
»EXPORTS-Overside_operations.pptx

Funding

Funding Agency: NASA

Grant or contract number: XXXXXX

Scientific Instrumentation for R/V Atlantis

Other Science Vans:

Shipboard Equipment
ADCP 75 kHz
A-Frame
Deionized Water System
Science Underway Seawater System
Navigation - Heading
Fume Hood
Navigation - Position
Crane
Shipboard Communication
Basic Internet access via HiSeasNet
Is there a need to receive data from shore on a regular basis?
CTD/Water Sampling
911+ Rosette 24-position, 10-liter bottle Rosette with dual T/C sensors
Mocness
Biospherical underwater PAR (1000m depth limit) with reference Surface PAR
SBE43 oxygen sensor
Seapoint STM turbidity sensor
Wet Labs C*Star transmissometer (660nm wavelength)
Wet Labs ECO-AFL fluorometer
Wet Labs FLNTURTD Combination Flourometer and Turbidity Sensor
Critical CTD Sensors
May use own sensors (TBD) plus underwater video profiler (UVP) and LISST
MET Sensors
Barometric Pressure
Air temperature
Relative Humidity
Wind speed and direction
Short Wave Solar Radiation
Sample Storage
Climate Controlled Walk-in
Freezer -70°C 25 cu. ft.
Freezer -70°C 3.2 cu. ft. ea.
Refrigerator 8.6 cu. ft.
Scientific Walk-in Freezer
Scientific Walk-in Refrigerator
Storage Notes: In addition to ship provided fridge and freezer space, the science party will bring aboard multiple liquid nitrogen dewars for sample storage. Does the Atlantis still have the LN production capabilities it purchased a few years ago?  If so, what capacity for production? We will pre-fill our dewars but given the length of this cruise will need to top them off occassionally.  We are likely to bring a larger filling dewar as well.
Navigation
Will you be using Long Base Line (LBL) navigation?	no
How many nets?	null
How many tansponders?	null
Will you be using Ultra-short baseline (USBL) navigation?	no
Navigation
GPS
Navigation Notes:
Winches
CTD Winch with .322" Electro-mechanical wire
Hydro Winch with .25" hydro wire
Mooring / TSE winch
Other Portable Winch
Winch Notes: Many overboarding activities on the previous EXPORTS cruise aboard the RV Revelle required sharing of winches/wires between packages.  Starboard side deployments included standard ship's CTD, MOCNESS, zooplankton nets, Marine Snow Catchers, trace metal clean tow-fish, and a small optics package (self powered and logging).  Recoeries of the neutrally buoyant sediment traps also occurred on the starboard side. Aft deployments using the A-frame or hand deployed packages include the trace metal clean CTD rosette, deployment of neutrally buoyant sediment traps and deployment and recovery of a surface tethered sediment trap array and a 500 m wire-walker with surface expression, and multiple hand deployed optics packages where one may require an air-tugger to assist in the deployment and recovery due to its weight in air (~100 lbs). Starboard deployments will include a trace metal clean towfish, MOCNESS on a .322 conducting cable, zooplankton nets (separate hydrowire preferred, do not need conducting wire), marine snow catchers (does not reqiure conducting wire), small optics package (does not require conducting wire). If possible, the TMC rosertte would preferable be deployed off starboard side. See EXPORTS Overside operations document.
Wire use and application
Other
Hydro Winch with .25" hydro wire
CTD Winch with .322" Electro-mechanical wire
Winch Notes: See EXPORTS Overside operations document.
Standard Oceanographic Cables
Slip ring required? no Non-standard wire required? no Traction winch required? no
Portable Vans
Hydrographic Van
Isotope Van

Science Van 1
Type/size: Trace Metal Clean Van		Location: Aft deck
Water: yes		Power:yes

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? yes Details: A block to be used with the trace metal clean rosette will be provided by the science party.  Specs forthcoming.

Special Requirements

Elecrical Power: yes	Identify Freshwater needed in all vans. (TMC, GP, 2 Rad vans)
Equipment Handling: yes	Identify: marine snow catchers (small crane use?)
Inter/intraship Communications: yes	Identify: Will work with all three ships to determine best mode(s) of communication
Science Stowage: yes	Identify: Use of the forward hold and any other space for empty boxes and spare equipment would be helpful.
Water: yes	Identify: Freshwater needed in all vans. (TMC, GP, 2 Rad vans)

Additional Cruise Items/Activities

Explosive Devices:no Portable Air Compressors:yes Flammable Gases:no Small Boat Operations:no SCUBA Diving Operations:no

Hazardous Material

Will hazardous material be utilized?yesDescribe deployment method and quantity:

Radioactive Material

Radioiosotopes:yes

Additional Information

Is night time work anticipated on this cruise?yesSpecialized tech support (Seabeam, coring, other):
Other required equipment and special needs:

Checklist & Notes

Checklist
U.S. Customs Form:	no
Diplomatic Clearance:	no
Date Submitted:
Date Approved:
Agent Information:
Countries:
Notes:
Isotope Use Approval:	no
Isotope Notes:
SCUBA Diving:	no
Checklist
SSSG Tech: