OSIW: Oceanic Sub-mesoscales and Internal gravity Waves: an issue for SWOT
- (LOS - IFREMER)
This comparison will allow us to assess with more confidence, using this validated simulation, when and in which regions SWOT observations can be used to retrieve balanced motions. It should also stimulate future fundamental studies to better understand the mechanisms involved in this 10-100 km range.
This project is part of an international effort and will be carried out within the context of the new international Working Group on High-Resolution Models (WG) created during the last SWOT Science Team meeting (June 2016). It first focuses on the Southern Hemisphere using a unique in-situ dataset at high-resolution. Another OSTST project (submitted to NASA-ROSES and led by Andy Thompson) mostly focuses on the Northern Hemisphere using the same strategy. We will then take advantage of the results from a separate study that analyses a new satellite dataset covering the World Ocean. This dataset, involving AlitKa and Sentinel-3 altimeter data, displays some impact of internal waves on SSH (Clément Ubelmann personal communication). Strategy of our project should motivate other modelling teams involved in the WG to use a similar approach to improve the physics of the different models (in terms of parameterizations and including more dynamics such as internal tides, …).