Articles | Volume 16, issue 13
https://doi.org/10.5194/gmd-16-3675-2023
https://doi.org/10.5194/gmd-16-3675-2023
Development and technical paper
 | 
06 Jul 2023
Development and technical paper |  | 06 Jul 2023

Data assimilation sensitivity experiments in the East Auckland Current system using 4D-Var

Rafael Santana, Helen Macdonald, Joanne O'Callaghan, Brian Powell, Sarah Wakes, and Sutara H. Suanda

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Short summary
We show the importance of assimilating subsurface temperature and velocity data in a model of the East Auckland Current. Assimilation of velocity increased the representation of large oceanic vortexes. Assimilation of temperature is needed to correctly simulate temperatures around 100 m depth, which is the most difficult region to simulate in ocean models. Our simulations showed improved results in comparison to the US Navy global model and highlight the importance of regional models.