Toward a Global 1/25 degree HYCOM Ocean Prediction System with Tides

Abstract

Abstract : The overall technical goal is to implement a 1/25 deg horizontal resolution global ocean prediction system based on the HYbrid Coordinate Ocean Model (HYCOM) with tides and dynamic sea ice. The scientific goals include but are not limited to a) evaluation of the internal tides representation in support of field programs, b) data assimilation in the presence of tides, c) evaluation of the model's ability to provide useful boundary conditions to high resolution coastal models, d) interaction of the open ocean with ice, e) shelf-deep ocean interactions, f) upper ocean physics including mixed layer/sonic depth representation, g) mixing, etc. The objectives are to perform the R&D necessary to develop, evaluate, and investigate the dynamics of 1/25 deg global HYCOM with tides coupled to CICE (the Los Alamos sea ice model) with atmospheric forcing only, with data assimilation via NCODA (NRL Coupled Ocean Data Assimilation), and in forecast mode. Work closely with NRL Stennis to incorporate advances in dynamics and physics from the science community into the HYCOM code maintained by the Navy.