CO2 EXCHANGE BETWEEN WESTERN MEDITERRANEAN

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CO2 EXCHANGE BETWEEN WESTERN MEDITERRANEAN WORKPACKAGE 13.- Regional assessment for the West-Mediterranean CO2 EXCHANGE BETWEEN WESTERN MEDITERRANEAN AND ATLANTIC OCEAN STRAIT OF GIBRALTAR Emma Huertas

Mediterranean Water (MOW) Atlantic-Mediterranean Interface (AMI) Surface Atlantic Water (SAW) Inflow Mediterranean Water (MOW) Outflow

STRAIT OF GIBRALTAR (MOW) (SAW) (AMI) (NACW)

Five campaigns have been performed from month 1 (January 2005) to month 24 (Dec. 2006) on board the Moroccan RV Al Amir Moulay Abdallah Three sampling cruises on board the Spanish BIO García del Cid A meeting on data quality was celebrated in Cádiz on June 06. CARBOGIB1 (02.05.2005-05.05.2005) CARBOGIB2 (07.09.2005-09.09.2005) CARBOGIB3 (12.12.2005-13.12.2005) CARBOGIB4 (20.03.2006-21.03.2006) CARBOGIB5 (22.05.2006-23.05.2006) CARBOGIB6 (NEXT WEEK) G3 CB1 CB5 CB2 CB4 Two sampling sections: CAMARINAL GIFT (GIbraltar Fixed Time series)

VARIABLES Temperature & Salinity Total alkalinity pH Dissolved Oxygen DOC-TDN Inorganic nutrients & Chl a CNH

MEDITERRANEAN WATERS ARE MUCH MORE ALKALINE CARBOGIB1 CARBOGIB2 CARBOGIB3 r2=0.902 CARBOGIB4 r2=0.957 CARBOGIB5

pH DECREASES TOWARDS THE MEDITERRANEAN CARBOGIB1 CARBOGIB4 CARBOGIB5 NASW MOW NACW

Chlorophyll (mgl-1)

Nitrate (mM)

Phosphate (mM)

[O2] (mg L-1) CARBOGIB1 CARBOGIB2 CARBOGIB3 CARBOGIB4 CARBOGIB5

STRAIT OF GIBRALTAR CARBOGIB1 CARBOGIB2 CARBOGIB3 CARBOGIB4 CARBOGIB4

INFLOW ATLANTIC MEDITERRANEAN OUTFLOW ESPARTEL G1 CAMARINAL G2 G3 0.8 Sv 1 Sv INTERFACE ATLANTIC MEDITERRANEAN OUTFLOW 1 Sv 0.8 Sv

MO: Mediterranean outflow AI: Atlantic inflow MO: García-Lafuente in situ measurements AI: 0,69Sv (Sarmiento et al. 1988) MO: 0,65 Sv AI: 0,69Sv (Sarmiento et al. 1988) MO: García-Lafuente in situ measurements AI: 0,78Sv (Tsimplis & Bryden 2000)

INTERPOLATED VALUES

INTERPOLATED INORGANIC CARBON FLUXES IN THE MEDITERRANEAN OUTFLOW THROUGH THE STRAIT OF GIBRALTAR