
MEDLEY
MixED Layer hEterogeneitY
MEDLEY brings together state of the art observations, groundbreaking submesoscale-resolving models, an innovative sea-ice model, and the latest generation of climate models (with an eddying ocean) involved in the HighResMIP intercomparison. The objectives of MEDLEY are 1) to evaluate the spatial heterogeneity of fluxes and processes controlling the ocean mixed layer
2) to take into account this heterogeneity to improve the representation of the mixed layer transfer function in climate models.
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By pooling their expertise, MEDLEY members will produce the most complete evaluation of the mixed layer dynamicsin climate models, from the North Atlantic to the Arctic ocean.
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MEDLEY will improve our understanding of the relationship between air-sea fluxes and mixed layer properties,taking into account the mediation of the fluxes induced by the fractured sea ice cover. It will evaluate the effect of heterogeneities on mixed layer properties, including currents and kinetic energy, as well as the relationship between the mixed layer and the interior through the stratified transition layer.
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MEDLEY will impact European climate models based on the NEMO modelling platformby improving the representation of sea ice and mixed layer processes. We will create new diagnostics for model evaluation to ensure that the mixed layer transfer function is better constrained in future climate models.

About
The project integrates state of the art observational datasets and basin scale ocean models resolving the kilometre scale, an innovative sea-ice model, and the latest generation of climate models with an eddying ocean component. Building on interdisciplinary collaborations between its members, MEDLEY will take advantage of the most recent data analysis (e.g., machine-learning based classification).
Project leader
Research themes: numerical ocean modelling from the global to the regional scale. Influence of mesoscale eddies on the ocean circulation and on the large scale transports of heat and freshwater. Ocean surface mixed layer. Influence of bottom topography on the ocean circulation.
Regions of interest: North Atlantic (always), Tropical Atlantic (this is where I started), South Atlantic and Antarctic circumpolar current (a little bit), Nordic Seas and Arctic ocean (recent).
Project consortium
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Parent programme
Climate science for oceans
JPI Climate & JPI Oceans Joint Transnational Call on the Next Generation Climate Science in Europe for Oceans
Oceans play a key role in the climate system and are also affected by climate change. As confirmed by the IPCC special report on ocean and cryosphere, ocean dynamics are a major modulator of weather and climate including future trends and extremes. However, there are still uncertainties in the understanding and quantification of key climate-ocean interactions and the ocean’s buffering capacities for absorbing heat and CO2. This joint call aims to address these uncertainties.
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