NEWSLETTER
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    MAPPING

    TRICUSO key visual: a research vessel and a racing ship are crossing the letter C representing ocean carbon observation, leaving blue wakes behind and dropping argo floats after themselves for said observations.

    MAPPING

    Currently, there is a discrepancy between model and data-based estimates of ocean carbon uptake of approximately 30%. Resolving this uncertainty is a matter of high priority as it hampers policy making decisions towards managing our ocean and climate.

    TRICUSO will assess the reduction in uncertainty in the integrated air-sea CO2 flux by merging the available measurements collected during the TRICUSO fieldwork from different platforms: Argo floats, wave gliders and ships of opportunities (sailing yachts and cruise ships). This will provide the first air-sea CO2 flux reconstructions using measurements from three large European Research Infrastructures (RIs) and directly quantify the added value of combining them. We will perform two Observing System Simulation Experiments (OSSEs): one before and one after the TRICUSO fieldwork, the second with actual observations collected during the field campaigns. This will enable us to quantify the improvements by calculating the error reduction if we compare our reconstructed pCO2 fields with the model truth.

    The result will inform an assessment of new dependent parameters that more faithfully represent the pCO2 variability in the Southern Ocean.

    Schematic of the data processing chain from observations through machine learning reconstruction to near-real term monitoring and forecasting. The figure is divided in three parts: from bottom to top: Near-real time monitoring and forecasting; Data modelling building on SOM-FFN; and VLIZ and European observational infrastructure (e.g. ICOS, Lifewatch, ESA). On the bottom part, there is a graph with time on the horizontal x axis and air-sea CO2 flux on the vertical y axis. There are three upgoing trends shown on this graph: a true flux, a forecast and the forecast uncertainty. The middle part of the figure shows a data modelling, simplified to lines connecting different coloured dots. The top part of the figure represents a satellite scanning the Belgian Part of the North Sea, where different sensors are also measuring.
    Figure from a science paper by Peter Landschützer (from the Flemish Marine Institute). It shows three graphs of the Earth with a multi-coloured ocean.

    Recommended Scientific Papers

    Data-based estimates of the ocean carbon sink variability –first results of the Surface Ocean pCO2 Mapping intercomparison (SOCOM)

    Quantifying Errors in Observationally Based Estimates of Ocean Carbon Sink Variability

    A detectable change in the air‐sea CO2 flux estimate from sailboat measurements

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    “TRICUSO will combine the strengths of marine infrastructures to tackle the final frontier in marine carbon cycle science, i.e. the Southern Ocean CO₂ uptake”

    Peter Landschützer, WP3 Lead

    An illsutration of 2 ships and a long wake going accross the width of the screen, with 3 sensors floating in the wake after getting dropped off.
    Partly negative version of TRICUSO logotype - a half white, half blue logo symbol of wakes and 3 research infrastructure symbols with 'TRICUSO' title underneath.
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    This work was funded by the European Union under grant agreement no. 101188028. Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or the European Research Executive Agency (REA). Neither the European Union nor the granting authority can be held responsible for them.  

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