Real-time Data Assimilation of Ice Concentration into a Coupled Ice/Ocean Forecast System
NAVAL RESEARCH LAB STENNIS SPACE CENTER MS OCEANOGRAPHY DIV
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Since the late 1980s, ice forecasting systems developed by the Naval Research Laboratory NRL have been predicting conditions in the Arctic Ocean and several of its marginal seas for use by the U.S. Navy. Each day a 120-hour forecast of ice drift, ice thickness and ice concentration is run operationally at the Naval Oceanographic Office NAVOCEANO. Presently, a high resolution Arctic two-way coupled iceocean nowcastforecast system based on the Community Ice CodE CICE and the HYbrid Coordinate Ocean Model HYCOM is being tested using the Navy Coupled Ocean Data Assimilation NCODA system. Ice concentration data from the Defense Meteorological Satellite Program DMSP Special Sensor MicrowaveImager SSMI is used as initialization for the models ice concentration field. Results from the coupled system both with and without the use of ice concentration data for initialization will be discussed.
- Snow, Ice and Permafrost