ii.    Studies on proxies and ocean modelling (Speich & Swart) 10 min .....................................................................

iv.    CFCs distribution along BGH, GH2004 and I6_2008 (Fine, Speich, Happel, Huhn & Rhein) 5 min ..........(refer to : cruise observation, above) .

5.   Scientific implementation (last half day of the meeting): for the content of discussion see further below in the report

·         The Southern Ocean Observing System

·         A deep ocean monitoring network

·         The Atlantic Meridional Overturning

·         The talks we have had during the two-day meeting have shown that there is a strong potential for many collaborations to enhance the scientific range and reach of BGH cruise results

·         To enhance the potential and collaborations we need to slightly organize and maybe centralize the collaborative work

It has been suggested that MP Torre prepares a “Data Base manual” with a contribution from the board to include rules of data use and exploitation.

As a general rule, one should always inform the scientist responsible for the data, with cc to the principal investigator of the project and the board, on the scientific use you will make of the data, on the scientific plans, use in conferences and publications. Please, always consider these basic rules of scientific deontology.

If any problem arises concerning the use or archiving of the data, please contact the board to inform it.

During the BGH post-cruise meeting it appeared that almost every group made progress in their data analyses and started to consider publications of their results. Some of the talks and announced publications showed already some collaborative effort among different groups and disciplines. Nevertheless, the uniqueness and richness of the BGH data set can be exploited scientifically well beyond these early results.

It has been therefore decided to form specific working groups that will meet (physically or by teleconferences) by June 2009 to enhance the already existing collaborations and the potential for novel important scientific results. During the last day of the meeting we listed some possible working groups and defined a person in charge for each of them. The task of the person in charge will be to organize the working group meetings and animate the collaborative work. Assistance for organization of workshops, meetings, etc, can be requested from the BGH project board.

The BGH 2009 Working groups that have been set-up during the meeting are:

Although a few participants are in a hurry to submit their publication asap (and this in the context of PhD studies), we have agreed that the bulk of results and the timing was compatible and suitable for a special issue in a scientific journal that has a good impact factor, that is fast in the publication process and that can be satisfy all the BGH “communities”, that is a journal red by physicists as well as geochemists and biogeochemists.

We have considered Deep Sea Research not entirely satisfactory under these constraints, and we are now looking to (preferentially) EGU journals (such Ocean Sciences or Biogeosciences), where the publication process is efficient and their impact factor high. Another possibility could be Journal of Geophysical Research, but it is expensive and relatively slow for manuscripts to appear.

While we are still making the last checks on the specific journal to choose, we have fixed the schedule for submission to a common “special issue” to early December 2009. A plenary BGH meeting will be organised during October 2009 to make the point on this issue.

At the moment, and this preliminary to the Working Groups meetings, we have listed the potential works/publications the different groups have in mind.

Cavagna, A. J., F. Planchon, F. Dehairs, M.-A. Sicre: Organic compounds including alkenones ? Two manuscripts to come and another one with very likely H. Claustre and J. Ras  (end 2009);

Planchon F., F. Dehairs: Th, C & N fluxes (before end 2009);

Planchon, F., H. Waldron, D. Cardinal: Estimate of C and remineralization (two manuscripts A+B?) (end 2009);

Waldron, H., W. Joubert, S. Thomalla and P. Monteiro: The spatial variability of ¹⁵N and ¹³C production fluxes in the BGH transect (end 2009)

Joubert, W. N. Cassar, H. Waldron, S. Thomalla, P. Monteiro : A comparison of the O₂/Ar and New production fluxes (end 2009)

Cassar, N., P. Monteiro, W. Joubert : The physics - biogeochemistry dynamics role in the spatial variability of underway NCP/GPP (end 2009) Monteiro, P., H. Waldron, S. Thomalla, B. Wake: Iron spike response characteristics (end 2009)

Thomalla, S., F. Dehairs (+ relevant ²³⁴Th person Planchon ?), Cassar, P. Monteiro, H. Waldron: Carbon export fluxes in the late summer 2008: Three different carbon export flux estimates (end 2009) ;C export from different estimation + Net community production (see Planchon et al. A) (end 2009)

Wake B., M. Boye, E. Achterberg, A. Milton: Multi-trace metals along BGH (end 2009);

Wake B., M. Boye, S. Thomalla, J. Bown, A. Masson, D. Nelson, E. Achterberg: Co-impact of Trace metals on phytoplankton (end 2009);

Bown, J., M. Boye, D. Nelson: Co-organic speciation along BGH (Summer 2009);

Bown, J., M. Boye, D. Nelson: Cd Zn dissolved / organic speciation (end 2010)

LeMoigne, F., M. Boye, A. Masson, A. Gueneugues, P. Pondaven D. Nelson Nutrients + chlorophylle and phaeopygments (?), Claustre & Ras, to be confirmed) + Speich S., M. Arhan (end 2009) ;

Tisnérat-Laborde, N., et al. DIC (Gonzalez-Davila, Santana-Casiano, Delille, Geillfus) with CFCs (Fine) and Physics (Speich, Arhan):

          Radiocarbon and stable carbon isotopes in the SO (end 2009)

          POC/DOC with Cavagna, Planchon, Charrière, Verdeny, (end 2009)

Chever, F., G. Sarthou, E. Bucciarelli, S. Speich, M. Arhan, C. Messager, A. Baker: Iron physical speciation + phys + atmos (end 2009)

Sarthou, G., E. Bucciarelli, F. Chever + Phys ? +DOC ? Iron redox speciation and H2O2 + phys +DOC (end 2009)

Bucciarelli, E. G. Sarthou, F. Chever: Co-impact Cu-Fe (end 2009)

Verdeny, E., P. Masqué, M. Villa + al. to be confirmed (Corvaisier/Pondaven) + Boye/Masson: Po fluxes  and Biogenic Silica + POC +PON (end of NH Summer 2009)

Hanfland C., W. Geibert et al. Ra and Ac (end 2010)

Fripiat F., D. Cardinal et al.? d³⁰Si along BGH (end 2009)

Beker, B., M. Boye: Taxonomy along BGH (end 2009) Corvaisier, R., F. Fripiat, P. Pondaven, E. Grosstefan, D. Cardinal : Incubation Si (A + B?) (end 2009?)

Corvaisier, R., P. Pondaven, E. Grosstefan: Biogenic Silica (end 2009)

Baker, A. (all trace metals LEMAR Team?)+ Verdeny et al?: Atmos input of Trace metals and macronutrients (end 2009)

Rujun Yang, Stan van den Berg, Marie Boye and Johan Brown: Organic speciation of iron and humic acid (end 2009)

Henderson, G. Cadmium isotopes (by 2010)

Boye, M., A. Masson + Gonzalez-Davila, Santana-Casiano: POC/PIC + Carbon (end 2009)

Boye + BGH group + Zero&Drake group: comparison of Trace metals (end 2009)

Boye+deBaar+Dehairs+van der Loeff+BGH groups+Zero&Drake groups+Physics  (Speich, Arhan, +Fahrbach?): TEIs (end 2009)

Cardinal, D., F. Planchon, F. Dehairs, F. Fripiat, AJ Cavagna: Mesopelagic remineralization (end 2009)

Dellille , B., N. X. Geillfus, PCO2 (end 2009)

Delille, B., N. X. Geillfus, M. Gonzalez-Davila, J. M. Santana-Casiano DIC intercalibration  (end 2009)

Delille, B., N. X. Geillfus, M. Gonzalez-Davila, J. M. Santana-Casiano + Polarstern Zero&Drake: DIC along BGH and Zero&Drake (end 2009?)

Gonzalez-Davila, Santana-Casiano, PH, Total Alkalinity Anthropogenic Carbon, Omega calcite and omega Aragonite along BGH (end 2009)

Jeandel (ou Garcia ou Grenier) et al.: Nd (dissolved) isotopes tracing water masses

Jeandel (ou Garcia ou Grenier) et al.: Nd (dissolved and particles) isotopes and REE concentrations tracing dissolved/particle interactions

Roy Barman (ou Jeandel) et al.: 230Th (dissolved and particles) tracing intermediate and deep water ventilation and particle dynamics

Radic, Lacan (ou l'inverse) et al. : Iron (dissolved) isotopes tracing the iron cycle

Radic, Lacan (ou l'inverse) et al. : Iron (dissolved and particles) isotopes tracing dissolved/particle interaction.

Lacan et al. : elemental concentrations of suspended particles.

Douville, E. : Boron Isotopes spatial variability (end 2009)

Uitz,  H. Claustre, J. Ras: HPLC pigments (end 2009?)

Charriere, B., R. Sempere et al.: Dissolved Organic Carbon (+ Chlorophylle and physics?)

Sicre, MA:  Alkenones along BGH (+ Physics+ Radium + Beaufort)

Barnes, K., Roychoudhury, A., Viollier, E., Pastor, L., Zeppa, P. Sulfate reduction in Southern Ocean sediments (end 2009).

Viollier et al. ?

Gladyshev, S., M. Arhan, S. Speich, R. Fine, O. Huhn, M. Rhein: Variability (interannual, interdecadal, trend) along BGH (end 2009)

Speich, S., M. Arhan, S. Gladyshev, V. Rupolo, X. Perrot: Upper layer structure and dynamics along BGH;

Arhan, M., S. Speich, S. Gladyshev, R. Fine (+Boye et al?): Deeper layers dynamics and structure (physical and biogeochemical) along BGH

Arhan, M., S. Speich, V. Rupolo, R. Fine, M. Boye et al. Eddies dynamics and physical and biogeochemical (nutrients, CFCs, pigments) structure during BGH

Rupolo, V., M. Arhan, S. Speich: Eddies fluxes using Argo and altimetry (end 2009)

Speich, S., K. Von Shukman, N. Grima, M. Arhan, A. Bentamy, F. Gaillard, S. Gladyshev: Southern Ocean variations in heat and salt content and steric height. (end 2009)

David, A., S. Speich, M. Arhan, P. Cornillon, F. d’Ovidio, P. Leborgne, F. Legekis: Defining Ocean fronts from in situ data, satellite altimetry and SST (2009-2010)

David, A. S. Speich, M. Arhan, F. Dovidio, P. Cornillon: Meridional transfers in the subsurface Southern Ocean south of Africa from in situ and altimetry data (2010).

Davila-Gonzalez, Santana-Casiano, Fine, Alavarez, Huhn, Rhein, Speich, Arhan, Gladyshev, Hopema : Carbon 2008 vs 2004 along GH

Messager, C., E. Key, M. Rouault, S. Speich, M. Arhan, S. Swart: Effect of ocean eddies south of Africa on the wind in the atmospheric boundary layer (end 2009)

Messager, C., E. Key, M. Rouault, S. Speich, M. Arhan, S. Swart: Air-sea interactions over fronts south of Africa and effect on the atmospheric boundary layer (end 2009)

Key E., Surface observations during BGH and validation of satellite SST (end 2009)

Saulquin B., M. Boye, J. Ras, H. Claustre, B. Beaufort: Satellite vs observed chlorophylle+pigments+coccolitophores (end 2009)

Beaufort,L.:  Coccolitophores (end 2009)

Fripiat, F., F. Dehairs, P. Mangion :  Delta¹⁵NO₃ (2010)

Dehairs F. Dissolved Barium along BGH (end 2009);

de Baar, Boye, Bowie, Dehairs, van der Loeff, Butler, Tovar-Sanchez, Nishioka, Masque, Croot, R. François, C. Hanfland. GEOTRACES during the IPY (2010) (order and list of co-authors to be refined).

Boye, Bowie, de Baar, Bathmann, Murphy, Tréguer, Johnston, Korb, et al.. The biogeochemical features of the SO during the IPY (2010) (order and list of co-authors to be refined).