WACSII

Ship

R/V Knorr

Vehicles

Cruise Party

Patricia Quinn: Chief Scientist, Principal Investigator
Organization Name 7600 Sand Point Way NE Seattle, WA United States 98115
+1 206 526 6892
patricia.k.quinn@noaa.gov

Departure: WHOI on May 19, 2014

Arrival: WHOI on Jun 6, 2014

Mobilization Date: May 14, 2014

Demobilization Date: Jul 6, 2014

Supporting documentation:

»WACS_II_proposed_cruise_track_for_WHOI.pdf

Operations Area: Northwest Atlantic

Lat/Lon: 31° 0.0′ N / 65° 0.0′ W

Depth Range: 0 / 2500

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

Science objectives

Sea spray aerosol (SSA) impacts the Earth’s radiation budget indirectly by altering cloud properties including albedo, lifetime, and extent, and directly by scattering solar radiation. The overarching scientific objective of WACSII is to characterize the properties of SSA in its freshly emitted stated to improve model calculations of the climate impacts of SSA. In addition, simultaneous measurements of surface seawater will be made to assess the impact of ocean properties on SSA.

Science Activities

Core WACS II Activities

1. To assess how ocean biogeochemistry impacts sea spray particles, measurements will be made in both high and low chlorophyll-a waters and relevant surface seawater parameters will be measured in situ. Freshly emitted sea spray particles will be generated using NOAA Pacific Marine Environmental Laboratory (PMEL)’s Sea Sweep particle generator which will be deployed over the  side of the ship next to the bow. Aerosol particles will be drawn from the Sea Sweep into the aerosol inlet located on top of AeroPhys van on the O2 deck. Aerosol will then be distributed to instruments in AeroPhys, AeroChem, Guest, and Russell vans. 
2. Characterization of surface ocean organic material to assess its influence on ocean-derived sea spray aerosol particles.  Uncontaminated seawater will be fed continuously to seawater van on the main deck and analyzed for fluorescence, particulate organic carbon (POC), and dimethylsulfide (DMS).
3. Comparison of surface and subsurface seawater POC and DOC. CTD sampling of seawater at several depths will be performed to assess which portion(s) of the seawater carbon pool impacts the composition of SSA.
4. Atmospheric sampling will be conducted continuously while the ship is in transit between Sea Sweep working areas. Atmospheric samples will be drawn into 20' high inlets mounted on top of the AeroPhys and Russell vans. Samples will be distributed from the two inlets to instruments in AeroPhys, AeroChem, Guest, and Russell vans.

Pre-cruise planning meeting: Teleconference

Stations:

Funding Agency: NSF #xxx, NOAA #xxx

- added NSF #xxx, added NOAA #xxx on Feb 5, 2014 2:11 PM by
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R/V Knorr

Shipboard Equipment

Deionized Water System
Science Underway Seawater System
Fume Hood

Shipboard Communication

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

CTD/Water Sampling

Wet Labs ECO-AFL fluorometer
911+ Rosette 24-position, 10-liter bottle Rosette with dual T/C sensors

Critical CTD Sensors: 

MET Sensors

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

Sample Storage

Chest Freezer (Household type) 0°F


Storage Notes:

Navigation

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

Will you be using Doppler/GPS navigation? no

Navigation

GPS

Navigation Notes:

Winches

CTD Winch with .322" Electro-mechanical wire

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? yes

Details: Sea Sweep will need to be lowered over the side of the ship with the ship's crane. It is deployed from the stern then pulled along side the ship to the bow. Ideally, it is deployed on the side of the ship that has minimal discharges.

Special Requirements

Elecrical Power: yes	Identify: Power for vans O2, O1, and main decks.
Equipment Handling: yes	Identify: Deployment of Sea Sweep
Inter/intraship Communications: no	Identify:
Science Stowage: no	Identify:
Water: yes	Identify: Uncontaminated seawater

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:

Radioactive Material

Radioiosotopes: no

Additional Information

Is night time work anticipated on this cruise? yes

Specialized tech support (Seabeam, coring, other): Deployment or capture of Sea Sweep

Other required equipment and special needs: 
Date Submitted: Feb 5, 2014 2:11 PM