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Core theme 3: Quantification of the carbon sources and sinks at the European regional scale

Core theme 3: Quantification of the carbon sources and sinks at the European regional scale. Helmuth Thomas and CT3 partners. WP12 : Regional assessment for the North Sea WP13 : Regional assessment for the West Mediterranean WP14 : European Integration.

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Core theme 3: Quantification of the carbon sources and sinks at the European regional scale

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  1. Core theme 3: Quantification of the carbon sources and sinks at the European regional scale Helmuth Thomas and CT3 partners • WP12: Regional assessment for the North Sea • WP13: Regional assessment for the West Mediterranean • WP14: European Integration Please visit our posters in the PhD and regular poster sessions

  2. Core theme 3: • Operational goals: • To assess the • (Variability of) Carbon uptake and release from / to atmosphere • C-Exchange between: • Marginal seas, land, atmosphere and Atlantic Ocean • Full carbon budget for Western Europe; with CarboEurope IP).

  3. WP 12: Regional assessment for the North Sea

  4. 97.5 percentile 2.5 percentile 50 perc. Determining the reliability of CO2 air-sea flux estimates Public data VOS data fCO2 and SST Climatology SSS (1°x1°) NCEP/NCAR wind speed (2°x2°) Atmospheric xCO2 from Mace Head, Ireland Observations Statistical model (generalized additive mixed model): produces 10 000 estimates for each position monthly means & std-errors for SST, fCO2, … For each lon. & lat.: 10 000 estimates  mean & std-error wind speed SST fCO2 Distribution Simulator Randomly draws 10000 combinations for each Lat & Lon computes solubility, transfer velocity, fCO2 gradient and flux See poster by Omar et al. for details For each lon. & lat.: median & confidence interval abdir.omar@gfi.uib.no

  5. Evolving topic in WP12 Ecosystem metabolism vs. CO2 air-sea fluxes: How does the trophic state (autotrophy vs., heterotrophy relate to CO2 air-sea fluxes? Net community production (NCP) = Gross Primary Production (GPP) – community respiration (CR)

  6. Estimating organic carbon fluxes between North Sea and Baltic Sea 2006 2007 DOC [mg/L] Time Assessing the DOC source:DOC = f(Salinity, Chl. A, Phaepigment) See talk and poster by Kulinski et al. for details

  7. Metabolic balance of coastal ecosystems • Metabolic balance, i.e., the gross primary production to community respiration (GPP:CR) ratio, co-governs direction of CO2 air sea fluxes • Determination in the field is expensive • Artificial neural network (ANN): GPP:CR = f (depth, DOC, Temp) • ANNs can provide a robust tool for the determination of ecosystem metabolism in coastal ecosystems

  8. Belgian coastal zone (North Sea) Gypens, Borges & Lancelot (in prep.) See posters by Gypens et al. for details

  9. Belgian coastal zone (North Sea) Source Offset CO2 uptake: ≈300mmol m-2y-1 Annual CO2 air-sea flux [mmol m-2 y-1] Sink Annual NEP [mmol m-2 y-1] Gypens, Borges & Lancelot (in prep.) See poster by Gypens et al. for details

  10. source sink WP12/14Land-Ocean boundary: Wadden SeaCO2 flux from a tidal flat area

  11. WORKPACKAGE 13.- Regional assessment for the West-Mediterranean Work package objectives 1) To create the data sets, measurement systems, and model set-ups as prerequisite for a quantitative estimate of Mediterranean carbon fluxes and Mediterranean/Atlantic carbon exchanges. 2) To assess the concentration of anthropogenic CO2 in the W. Mediterranean. Universite de Perpignan Consejo Superior de Investigaciones Científicas L'Institut National de Recherche Halieutique

  12. Four more campaigns have been performed from month 25 (January 2007) to month 37 (December 2007) on board the Moroccan RV Al Amir Moulay Abdellah in the Strait of Gibraltar. • CARBOGIB7 (07.05.2007-08.05.2007) • CARBOGIB8 (04.07.2007-05.07.2007) • CARBOGIB9 (06.11.2007-07.11.2007) • CARBOGIB10 (NEXT WEEK) CB5 G3 CB4 • Two sampling sections: • CAMARINAL • GIFT (GIbraltar Fixed Time series) CB2 CB1 The periodic sampling aims at examining the temporal variability of the carbon system variables in the strait and the mechanisms controlling the exchange between the Atlantic Ocean and the Mediterranean Sea.

  13. MEDITERRANEAN WATERS ARE MUCH MORE ALKALINE AND ENRICHED IN TOTAL CARBON CARBOGIB 7 CARBOGIB 8 Atlantic inflow Atlantic inflow Mediterranean outflow Mediterranean outflow

  14. A data set containing results from 6 cruises and a VOS line using Research Vessels passing through the Strait of Gibraltar has been generated (D13.11)

  15. The Mediterranean Sea:A very high CO2 and acidified environment Anthro. CO2 2006 δ pH 2006 Touratier et al.

  16. WP14:European Integration CARBOOCEAN – CARBOEUROPE: Martin Heimann’s talk earlier today and Harro Meijer’s talk on Thursday

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