Woods Hole Oceanographic Institution

Cruise Planning Synopsis

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AT42-10: Ohman/Send "CCE-LTER"


R/V Atlantis

Cruise Party

Uwe Send: Chief Scientist, Principal Investigator
+1 858 822 6710

Departure: Apr 28, 2019

San Diego

Arrival: May 4, 2019

San Diego

Operations Area

Southern California
Lat/Lon: 33° 0.0′ N / 122° 0.0′ W
Depth Range: 100 / 4000
Will the vessel be operating within 200 NM of a foreign country? no

Science Objectives

The California Current is a region of large ecological significance and
known sensitivity to climate forcing. Climate processes, complex
physical systems, carbon and nutrient chemistry, and ecosystem dynamics
all interact to create a rich, societally important, and scientifically
fascinating ocean environment off the west coast of the US. This project
establishes a unique highly multidisciplinary mooring presence in the
southern California Current: two moorings, called CCE(California Current
Ecosystems)-1 and -2 are located in the core of the California Current
and in the upwelling regime on the continental slope, respectively,
along CalCOFI line 80, and measure:
•  atmospheric conditions (CO2, wind, temperature, humidity,
precipitation, irradiance),
•  surface ocean conditions (temperature, salinity, pCO2, O2, pH,
currents, point and integrated measures of phytoplankton 
    chlorophyll content over the euphotic zone, and nitrate supply), and
mixed-layer depth,
•  broad-band active-acoustic observations of zooplankton and fish
biomass over the upper 300m.
The overarching science objectives are to:
1. Study the time variability of physical conditions and its forcing on
time scales from days to years.
2. Observe the impact of physical variability on biogeochemical and
ecosystem processes and conditions.
3. Relate environmental habitat conditions to fisheries quantities.

Science Activities

Cruise activities:

1. Recover a coastal mooring off Del Mar.
2. Recover the CCE1 mooring.
3. Recover the CCE2 mooring.
4. Re-deploy the (new/refurbished) CCE1 mooring.
5. Re-deploy the (new/refurbished) CCE2 mooring.
6. Collect CTD cast data with water samples for calibration/validation
(cal/val) of the mooring data.
7. Collect standard underway data for cal/val and as background site
information, esp. ship ADCP, thermosalinograph, and meteorology
8. CORC3 PIES recovery and redeployment
9. CORC3 Mooring acoustic data downloads

Additional Info

Pre-cruise Planning Meeting: Teleconference


Supporting documentation:



Funding Agency: NSF
Grant or contract number: OCE-16-37632
Funding Agency: NOAA
Grant or contract number: N/A, direct transfer

Scientific Instrumentation for R/V Atlantis

Shipboard Equipment

Bathymetry System 12 kHz
Bathymetry System 3.5 kHz
ADCP 75 kHz
Deionized Water System
Science Underway Seawater System
Navigation - Heading
Fume Hood
Navigation - Position

Shipboard Communication

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

CTD/Water Sampling

911+ Rosette 24-position, 10-liter bottle Rosette with dual T/C sensors
SBE43 oxygen sensor
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 3.2 cu. ft. ea.
Refrigerator 8.6 cu. ft.
Storage Notes:


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 Notes:


CTD Winch with .322" Electro-mechanical wire
Mooring / TSE winch
Other Portable Winch
Winch Notes:
two air tuggers for mooring operations

We will be attaching equipment to the CTD rosette for calibration/valibration.
Attaching an acoustic modem to the CTD rosette for acoustic downloads at CORC3 mooring site.
Winch Notes:

Standard Oceanographic Cables

Slip ring required? no
Non-standard wire required? no
Traction winch required? no

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: Yes, a block rated to 5500lbs & 10k lbs for mooring operations.

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

Hazardous Material

Will hazardous material be utilized?yes
Describe deployment method and quantity:

Radioactive Material


Additional Information

Is night time work anticipated on this cruise?yes
Specialized tech support (Seabeam, coring, other):
CTDs, and potentially mooring operations.
Other required equipment and special needs:

Checklist & Notes


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


SSSG Tech: