1. WP13: Regional assessment for the Mediterranean Sea Partner 22: University of Perpignan, France Catherine Goyet. CARBOOCEAN

2. Objective 1 (D13.2, D13.5, D13.6) To further create the datasets of the carbonate system properties Despite a large number of cruises organized throughout the whole Mediterranean Sea during the last century, it is obvious that the region is particularly poor concerning the quantity and the quality of data that describe the properties of the carbonate system. Measurements of A T are old and of very low precision and there is almost no measurement available for C T. Despite a large number of cruises organized throughout the whole Mediterranean Sea during the last century, it is obvious that the region is particularly poor concerning the quantity and the quality of data that describe the properties of the carbonate system. Measurements of A T are old and of very low precision and there is almost no measurement available for C T. This lack of data is striking if we compare the Mediterranean databases (MEDAR/MEDATLAS II 2002) with those available for the world ocean (WOCE, CARINA). This lack of data is striking if we compare the Mediterranean databases (MEDAR/MEDATLAS II 2002) with those available for the world ocean (WOCE, CARINA). Objective 1 is clearly to fill this gap of knowledge for the Mediterranean Sea. Objective 1 is clearly to fill this gap of knowledge for the Mediterranean Sea.

3. . EMED-BIOPT Sept/2006. SARHYGOL Feb-Dec/2001. SEMANE Jul/2002. RHOFI Jul/2003. BOUSSOLE/AOPEX Jul-Aug/2004.. Cruises off Alger (ISMAL) 2006. TSS DYFAMED & SOLA... METEOR 51/2 Oct-Nov 2001 (University of Kiel, Germany)

4. Dyfamed TSS Touratier F., Aït-Ameur N. and C. Goyet (2005). Evolution of anthropogenic CO2 since the 90’s at the Dyfamed (French- JGOFS) Time-Series Station, North Western Mediterranean Sea, GEOITALIA, Spoleto, Italie.

5. SEMANE July 2002 Objective 2 (D13.12) Objective 2 (D13.12) To start assessing carbon fluxes To start assessing carbon fluxes Aït-Ameur N, Goyet C (2006). Distribution and transport of natural and anthropogenic CO 2 in the Gulf of Cadiz. Deep-Sea Research II, 53, 1329-1343. Conclusions: the Mediterranean Sea is  an important sink for C ant  a source of C ant for the Atlantic Ocean

6. Objective 3 (D13.7, D13.8) Objective 3 (D13.7, D13.8) To assess the concentration of anthropogenic CO 2 (C ant ) To assess the concentration of anthropogenic CO 2 (C ant ) ►Using the TrOCA method: Touratier F, Azouzi L., and C. Goyet (in press). CFC-11, ∆C, and 3 H tracers as a means to assess anthropogenic CO 2 concentrations in the ocean, Tellus B. Touratier F, Azouzi L., and C. Goyet (in press). CFC-11, ∆ 14 C, and 3 H tracers as a means to assess anthropogenic CO 2 concentrations in the ocean, Tellus B. WP9  The simple in situ TrOCA method is one of the 5 approaches used for the inter-comparison exercise in the Atlantic Ocean. Vázquez-Rodríguez et al. (in preparation). Anthropogenic carbon in the Atlantic Ocean: comparison of five data-based calculation methods. ►Using the 3D GHER (university of Liège, Belgium) model of the Mediterranean Sea: The coupling with 2 biogeochemical models is now operationel at the university of Perpignan.

7. A B AAABBB

8. Other CARBOOCEAN contributions from Partner 22 Paper – Lee K. et al. (2006). Global relationships of total alkalinity with salinity and temperature in surface waters of the world’s oceans. GRL, 33, doi:10.1029/2006GL027207 Meeting– Goyet C. (2006). Review of various methods to estimate anthropogenic CO2 in the ocean. CARBOOCEAN WP9 meeting, Barcelona, March 2006. – Touratier F. (2006). Data quality asessment and guidance of forthcoming studies. CARBOOCEAN WP13 meeting, Cadiz, June2006. PhD – Aït-Ameur. Processus de séquestration du CO2 anthropique en Mer Méditerranée et en Mer de Ross. To be completed in January 2007. Poster – Touratier F., Azouzi L., and C. Goyet (2005). Distribution of anthropogenic CO2 in the world ocean using the TrOCA approach. ASLO Summer meeting, Santiago de Compostela, June 2005. Report – Taalba A. (2006). Estimation des champs de carbone organique total et anthropique en mer Méditerranée. Master report, Université de Perpignan, 26 p.

9. The in situ TrOCA method A T = A T ant + A T NAT C T = C T ant + C T NAT Methods using the preformed values A T = A T ant + A T 0 + A T bio + A T phys C T = C T ant + C T 0 + C T bio + C T phys The link is given by: A T NAT = A T 0 + A T bio + A T phys C T NAT = C T 0 + C T bio + C T phys

10. C ant (µmol/kg), ∆C* approach 1000 m2500 m C ant (µmol/kg), TrOCA approach 300 m 1000 m 700 m 2500 m 300 m700 m

11. A BA C ant (µmol/kg) TrOCA ∆C* ∆ 14 C (°/ oo ) CFC-11 (pmol/kg ) B

12. C ant (µmol/kg) TrOCA C ant (µmol/kg) ∆C*