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AT20-01a&b / CLIVAR

Ship

R/V Atlantis

Cruise Party

Ruth Curry: Chief Scientist Woods Hole Oceanographic Institution Clark 354, MS#21 Woods Hole, Ma. USA 02543 +1 508 289 2799 rcurry@whoi.edu Michael McCartney: Chief Scientist Woods Hole Oceanographic Institution Clark 358, MS#21 Woods Hole, Ma. USA 02543 +1 508 289 2797 mmccartney@whoi.edu James Swift: Principal Investigator Organization Name USA +1 858 534 3387 jswift@ucsd.edu

Departure: Mar 24, 2012
Woods Hole
Arrival: May 15, 2012
Woods Hole, MA
Operations Area
Western North Atlantic along 66 W and 52 W between 6 N and 42 N
Lat/Lon: 40° 0.0′ N / 70° 0.0′ W
Depth Range: 200 / 6000
Will the vessel be operating within 200 NM of a foreign country?	Bermuda, Dominican Republic, Aruba, Suriname, French Guiana
Are visas or special travel documents required?	no
Science Objectives
The main objective is to conduct a hydrographic survey nominally along longitudes 66 W and 52W including shipboard CTD, ADCP, LADCP and Niskin bottle sampling of the water column.  This is part of the U.S. CLIVAR Carbon / Repeat Hydrography program that aims to identify changes in ocean properties and circulation through time.
Science Activities
The hydrographic surveys will consist of approximately 180 full water column CTD/LADCP casts along the trackline.  Each cast will acquire up to 36 water samples on the upcast, which will be analyzed for salinity, oxygen, and nutrient concentrations.  Water samples will also be analyzed during the cruise for dissolved inorganic carbon (DIC), pH, total alkalinity and transient tracers (CFCs and SF6).  Additional water samples will be collected and stored for shore-based analysis of dissolved organic carbon (DOC), helium/tritium, 13C/14C, and chromophoric dissolved organic matter (CDOM).  Underway measurements will include surface pCO2, temperature, conductivity, dissolved oxygen, fluorescence, various meteorological parameters, and bathymetry.
Additional Info
Pre-cruise Planning Meeting: Visit WHOI
Stations:
Supporting documentation:
»A22_A20_statime.26Jan.pdf
»Feb_15__Proposed_Cruise_track_A22_A20.JPG
Notes: Station list as of Jan 26th 2012.  Mid cruise port stop will be Bridgetown Barbados April 17 - April 19.  Dividing leg 1 into two parts (a & b).

Funding

Funding Agency: NSF

Grant or contract number: 0752970

Scientific Instrumentation for R/V Atlantis

Other Science Vans:

Shipboard Equipment
Bathymetry System 12 kHz
ADCP 75 kHz
Deionized Water System
Science Underway Seawater System
Navigation - Heading
Fume Hood
Navigation - Position
Shipboard Communication
Basic Internet access via HiSeasNet
Critical CTD Sensors
SIO is bringing their own CTD/rosette and Niskin Bottles
Hydrographic Analysis Equipment
Salinometer
MET Sensors
Barometric Pressure
Air temperature
Relative Humidity
Wind speed and direction
Short Wave Solar Radiation
Storage Notes: 56 CO2 gas cylinders.   ROV bay and Alvin Hangar.  Run hoses to hydro lab and main lab.
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
Winch Notes: SIO has asked for two winches to be outfitted with 0.322 cable.
Wire use and application
CTD Winch with .322" Electro-mechanical wire
Winch Notes: SIO will supply their CTD/rosette package with 36-Niskin bottles.  U of Hawaii will supply some combination of upward and downward looking LADCP instruments (WH300, WH150) Rosette info (from winch tension meter) Weight in air (bottles empty): 2000lbs Weight in air (bottles Full ): 2900lbs Weight in water: 1200lbs (surface) Weight in water (6000M out): 4600lbs   Max depth of deployment:  6000 m Volume of samples:  360 liters
Standard Oceanographic Cables
Slip ring required? no Non-standard wire required? no Traction winch required? no
Portable Vans
Chemical Storage Van

Science Van 1
Type/size: 20'		Location: main 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: Unknown whether CDOM measurements will be acquired at this time.
UPDATE Feb 1 =  NO CDOM.

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:yes Small Boat Operations:no SCUBA Diving Operations:no

Hazardous Material

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

Radioactive Material

Radioiosotopes:no

Additional Information

Is night time work anticipated on this cruise?yesSpecialized tech support (Seabeam, coring, other):
An SSSG to assist with deployment and recovery of CTD package.Other required equipment and special needs:
CTD Shelter from weather and sea outside main lab entrance.  Overhead lighting improved in that same area.

CTD tracks with sled and tugger needed to get CTD under overhead outside main lab doors.

Checklist & Notes

Checklist
U.S. Customs Form:	yes
Diplomatic Clearance:	yes
Date Submitted:	Nov 3, 2011
Date Approved:
Agent Information:
Countries:
Notes:
US Custom forms 4455's needed for all science equipment loaded on Atlantis in March. http://www.whoi.edu/cms/files/Cust_Form_4455_summary_19606.pdf Anything shipped to Barbados for loading - Send ALL BOL's / AWB's to Eric Benway < ebenway@whoi.edu >
Isotope Use Approval:	no
Isotope Notes:
SCUBA Diving:	no
Checklist
SSSG Tech:
MOB = 3/20 - 3/23.