NORDA/FNOC (Naval Ocean Research and Development Activity's/Fleet Numerical Oceanography Center) Polar Ice Prediction System (PIPS)-Arctic: A Technical Description

摘要

The hydrodynamic/thermodynamic sea ice model designed by W.D. Hibler was modified to run operationally at the Fleet Numerical Oceanography Center (FNOC). Changes were made to adapt the model to the Cyber 205 system and to allow easy interfacing between the model and the data base needed to drive the model, the Navy Operational Global Atmospheric Prediction System (NOGAPS). The Polar Ice Prediction System (PIPS) contains the most recently updated thermodynamic version of the model. Improved numerics have been included in the model relaxation routine, which increases the model efficiency by a factor of three. A long-term simulation of the ice model was run using the NOGAPS forcing fields from 18 January 1983 to 18 January 1984. The model was run for three years and used the 1983 data repeatedly. This repetition allows the model to 'spin up' from its initial conditions, a 3.3 m thick layer of ice, to an appropriate ice thickness for 1983. Results from the third year of integration are compared to previous model results and observations. Keywords: Atmospheric prediction, Environmental parameters.