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Cruise dates « almost official » : October 21- December 13 LEG 1 : 29 jours LEG 1 : 25 jours 54 days 48 hour stop at Easter Island.

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Presentation on theme: "Cruise dates « almost official » : October 21- December 13 LEG 1 : 29 jours LEG 1 : 25 jours 54 days 48 hour stop at Easter Island."— Presentation transcript:

1 Cruise dates « almost official » : October 21- December 13 LEG 1 : 29 jours LEG 1 : 25 jours 54 days 48 hour stop at Easter Island

2 Possible evolutions regarding initial strategy Tahiti Easter Island Concepcion 164°W132°W100°W68°W 4°N 20°S 44°S

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4 Tahiti Easter Island Concepcion OPTION 1

5 OPTION 2

6 6 1 Tahiti Easter Island Concepcion 6 2 6 2 6 2 6 2 6 2 6 2 6 2 6 2 46 OPTION 3

7 Tahiti Easter Island Concepcion 4 6 6 2 6 2 6 2 6 2 6 2 6 2 6 2 6 2 OPTION 4

8 Alternative scenarii for the cruise OLIGO MESO (+ HLNC) EUTRO Transit. OPTION 1 basic 30 8 6 10 28 10 6 10 26 12 8 22 16 8 OPTION 2 + ref HLN Marq. OPTION 3 + gradient towards UPW OPTION 4 + mesotrophic station in grad. 54

9 Three types of stations Short stations :7 hours 30 Transit time calculated at 11 knots Long stations : 2 days Long stations : 4-6 days

10 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

11 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

12 5 Day-stations Context / constraints : 1.CTD-rosette-PVM-IOP every 3 hours 2.Eventually perfom a deep station

13 Deep stations TCO2, O2, N20, Iron nutrients Other trace elements (?) DOM diversity irradiation MO profonde Measurements : Where and how deep?

14 Detritus and surface microlayer specific sampling? At convergence, misinterpretation of the signal in terms of [Chla] because of the presence of floating detritus

15 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 m 3 ) 23 ARGO floats (SCRIPPS) (10 m 3, stockage à labris) sent to Tahiti : Claudie will be taught and made in charge of deployment. 2 floats + radiometers (Marlon?) Tramp deployment station gyre (5 days)

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17 Continuous underway measurements Temperature, Salinity fluo Turner Hiac Transmissometer Cstar 488 nm – 660 nm pCO2, N2O (flow cytometry, 1 hour) other measurements ???

18 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?

19 Radioisotopes – produits chimiques container : (France, Thierry, Peggy, Marcel) compteur à scintillation demande CIREA – personnes compétentes contraintes sur les produits chimiques? Fiches produits

20 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

21 Data - base

22 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

23 Chief of mission or cruise data person in charge Parameter manager PROOF Data Base M.P. Labaied Researchers which make the data acquisition

24 Listing of all the planned parameters Step 1 - Before the cruise (June)Chief of mission

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

26 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

27 Complete the Parameter form Step 3 - After the cruiseManager of Parameters

28 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

29 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 ??


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