Carbon / Repeat Hydrography A22

Ship

R/V Atlantis

Vehicles

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: Woods Hole on Mar 24, 2012

Arrival: Woods Hole, MA on May 15, 2012

Mobilization Date: Mar 20, 2012

Supporting documentation:

»A22_A20_statime.26Jan.pdf

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.

Pre-cruise planning meeting: Visit WHOI

Stations:

Funding Agency: NSF #0752970

- added NSF #0752970 on Jan 11, 2012 12:45 PM by Ruth Curry

R/V Atlantis

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:

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

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


Wire 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

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

Other Science Vans:

Other Science Vans:

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.

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? yes

Radioactive Material

Radioiosotopes: no

Additional Information

Is night time work anticipated on this cruise? yes

Specialized tech support (Seabeam, coring, other):  An SSSG to assist with deployment and recovery of CTD package.

Other required equipment and special needs: 
Date Submitted: Feb 1, 2012 9:42 AM by Eric Benway