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Accelerated Prediction of the Polar Ice and Global Ocean (APPIGO)

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Technical Report

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Center for Ocean-Atmosphere Prediction Studies, Florida State University Tallahassee United States

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Arctic change and reductions in sea ice are impacting Arctic communities and are leading to increased commercial activity in the Arctic. Improved forecasts will be needed at a variety of timescales to support Arctic operations and infrastructure decisions. Increased resolution and ensemble forecasts will require significant computational capability. At the same time, high performance computing architectures are changing in response to power and cooling limitations, adding more cores per chip and using Graphics Processing Units GPUs as computational accelerators. This project will improve Arctic forecast capability by modifying component models to better utilize new computational architectures. Specifically, we will focus on the Los Alamos Sea Ice Model CICE, the HYbridCoordinate Ocean Model HYCOM and the Wavewatch III models and optimize each model on both GPU-accelerated and MIC-based architectures. These codes form the ocean and sea ice components of the Navys Arctic Cap NowcastForecast System ACNFS and the Navy Global Ocean ForecastingSystem GOFS, with the latter scheduled to include a coupled Wavewatch III by 2016. This work will contribute to improved Arctic forecasts and the Arctic ice prediction demonstration project for the Earth System Prediction Capability ESPC.

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