Cruise dates « almost official » :

October 21- December 13

• LEG 1 : 29 jours

• LEG 1 : 25 jours

• 54 days

• 48 hour stop at Easter Island

Possible evolutions regarding initial strategy

Tahiti

EasterIsland

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on

164°W 132°W 100°W 68°W4°N

20°S

44°S

Tahiti

EasterIsland

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on

66

62

62

626

2

6262

OPTION 1

6

1

Tahiti

EasterIsland

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on

66

6262

6262

62

626

2

OPTION 2

6

1

Tahiti

EasterIsland

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6262

6262

6262

6262

46

OPTION 3

Tahiti

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4

6

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6262

6262

626

2

OPTION 4

Alternative scenarii for the cruise

OLIGO

MESO (+ HLNC)

EUTRO

Transit.

OPTION 1

basic

30

8

6

10

28

10

6

10

26

12

8

8

22

16

8

8

OPTION 2+ ref HLN

Marq.

OPTION 3+ gradient

towards UPW

OPTION 4+

mesotrophic station in

grad.

54 54 54 54

Three types of stations

• Short stations :7 hours 30

Transit time calculated at 11 knots

• Long stations : 2 days

• Long stations : 4-6 days

Short stations

Three main temporal constraints :

1. Stations no longer than 7.5 hours

2. Sampling for simulated production before sunrise

3. Overpasses of satellites in the 9h00-15h00 time window

calval +/- 1 Hour of the passage• MERIS : 9h00 –11h00

• MODIS T: 9h00 –11h00

• SeaWiFS : 11h00-13h00

• MODIS A: 13h00-15h00

2 Day-stations

Context / constraints :

1. Locations will be choosen on the basis of high resolution color scenes (and SST for upwelling?)

2. a priori, distance between stations equals 55-70 miles (5-7 hour transit). Need to be on the following station on time (3-4 am) for primary production sampling

3. Eventually perfom a deep station

4. CTD-rosette-PVM-IOP every 3 hours

5 Day-stations

Context / constraints :

1. CTD-rosette-PVM-IOP every 3 hours

2. Eventually perfom a deep station

Deep stations

• TCO2, O2, N20,

• Iron

• nutrients

• Other trace elements (?)

• DOM

• diversity

• irradiation MO profonde

Measurements :

Where and how deep?

Detritus and surface microlayer specific sampling?

At convergence, misinterpretation of the signal in terms of [Chla] because of the presence of floating detritus

Moorings / argo floats / tramps

Mooring• sediment trap : drifting mooring with 2 PPS5 5?) ; sample (mass) budget ; 150 m and 300 m

• production line : brought by Thierry?

Argo floats / drifters• 10 drifters with drogue (NOAA) (20 m3 )

• 23 ARGO floats (SCRIPPS) (10 m3, stockage à l’abris)

sent to Tahiti : Claudie will be taught and made in charge of deployment.

• 2 floats + radiometers (Marlon?)

Tramp deployment• station gyre (5 days)

Continuous underway measurements

• Temperature, Salinity

• fluo Turner

• Hiac

• Transmissometer Cstar 488 nm – 660 nm

• pCO2, N2O

• (flow cytometry, 1 hour)

• other measurements ???

Deck incubation

• Who?

• Alternative solution to get Ze « at night » and to chose the accurate sampling depths (require to calibrate the Seatech fluorometer with “extracted turner Chla” and operate a small program just after the dowcast. Operational after 2-3 days (sufficient data points for the calibration of the turner).

• temperature controled?

Radioisotopes – produits chimiques

• container : (France, Thierry, Peggy, Marcel)

• compteur à scintillation

• demande CIREA – personnes compétentes

• contraintes sur les produits chimiques?

• Fiches produits

Rosette – bottles - sensors

• CTD INSU modifiée + O2 + CSTAR (660) + Fluo CDOM +AC9 + bb3

• batterie + capteur NO3 (Marlon)

• batterie + AC9 (dissous) + CSTAR (488) + SAM + ECO VSF

• PVM monotube

• place pour 19 ou 21 bouteilles sur la rosette

• 42 bouteilles INSU (21 classiques, 21 extérieures): quel choix?

• tests et assemblage de la rosette et des capteurs en Mars-Avril à Villefranche

Data - base

Role of the PROOF data base

1. To list, collect, organize and archive data originated from PROOF operations

2. To permit the exchange of data between national and international institutions

3. Transfer the validated data to international data bases (PANGAEA)

4. To diffuse scientific information within the PROOF program (Announcements,

Colloquium, Proposals …)

http://www.obs-vlfr.fr/proof/index_vt.htm

Chief of mission orcruise data person in charge

Parameter manager

PROOF Data BaseM.P. Labaied

Researchers which make the data acquisition

N° Responsible Planned Measured In bank Validated F PARAMETER GROUPS METHODS STOCK or FLUXES SAMPLING

1 x Meteo Meteo

2 x CTD Hydrology Seabird Vertical profiler

3 Salinité BTL Hydrology Salinometer Rosette

4 Oxygène Dissolved gas Seabird Stock Vertical profiler

5 Oxygène BTL Dissolved gas Winkler Stock Rosette

6 Fluorescence Chla vertical Inherent optical properties SeaTech/Chelsea/Wetlabs Stock Vertical profiler

7 Fluorescence CDOM Inherent optical properties Wetlabs Stock Vertical profiler

8 Nephelometry Inherent optical properties Cheslea Stock Vertical profiler

9 Attenuation Cstar Inherent optical properties C star Stock Vertical profiler

10 x PAR Apparent optical properties Biospherical Vertical profiler

11 x L ADCP Current RDI Vertical profiler

12 x ADCP 300khZ Current RDI Continuous horizontal

13 x ADCP 75khZ Current RDI Continuous horizontal

14 x Thermosalinograph Hydrology Seabird Continuous horizontal

15 Fluorescence Chla horizontal Inherent optical properties Turner / Wetlabs Stock Continuous horizontal

16 x Particules PVM Particle size distribution PVM Stock Vertical profiler

17 x Particules OPC lab Particle size distribution OPC lab Stock Plankton net

18 x Particules OPC fish Particle size distribution OPC fish Stock Continuous horizontal

Listing of all the planned parameters

Step 1 - Before the cruise (June) Chief of mission

Precise description of the parameters

Step 1 - Before the cruise (June) Responsibles of parameters

Give a first indication on what has been measured during the leg?

•number of stations•number of samples•continuous•etc

Step 2 - Before the end of each leg Managers of Parameters

Complete the Parameter form

Step 3 - After the cruise Manager of Parameters

Transmit your data files to the Proof Data Base

Marie-Paule Labaied

•Indicate the data validation level•Indicate the confidentiality (2 years)

Step 4 – Before your retirement ! Chief of Mission Managers of parameters

Embarquants : qui échantillonne pour les non-embarquants?Collaborations?

• phyto (Gomez) Antoine/ Hervé

• coccolithophoridés (Beaufort / de Varga) Frédéric

• ciliés (Dolan) Frédéric

• pigments photoheterotrophes (Bidigare) Joséphine

• flow cytometry : bacteria chla (Bidigare) Frédéric

• virus (Markus) ?

• Nif gene (Zehr) Frédéric

• Oxygène ?

• P pools (Karl) Thierry?

• FRRF IR (Kolber Falkowski?) ?

• Molecular CDOM (Repeta) Hervé / Davy

•??

•??