cruise dates « almost official » : october 21- december 13 leg 1 : 29 jours leg 1 : 25 jours 54...
TRANSCRIPT
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
Conce
pci
on
164°W 132°W 100°W 68°W4°N
20°S
44°S
Tahiti
EasterIsland
Conce
pci
on
66
62
62
626
2
6262
OPTION 1
6
1
Tahiti
EasterIsland
Conce
pci
on
66
6262
6262
62
626
2
OPTION 2
6
1
Tahiti
EasterIsland
Conce
pci
on
6262
6262
6262
6262
46
OPTION 3
Tahiti
EasterIsland
Conce
pci
on
4
6
6262
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
•??
•??