HR: 12:05h
AN: OS52B-08    [Abstracts]
TI: A Finite Difference Ocean Model With Adaptive Mesh Refinement Capability
AU: * Herrnstein, A
EM: aherrnst@llnl.gov
AF: Lawrence Livermore National Laboratory, P.O. Box 808, L-103, Livermore, CA 94550
AU: Wickett, M E
EM: wickett@llnl.gov
AF: Lawrence Livermore National Laboratory, P.O. Box 808, L-103, Livermore, CA 94550
AU: Rodrigue, G
EM: rodrigue1@llnl.gov
AF: Lawrence Livermore National Laboratory, P.O. Box 808, L-419, Livermore, CA 94550
AB: This research integrates the concepts of Adaptive Mesh Refinement (AMR) into a well accepted finite difference ocean model known as the Modular Ocean Model (MOM) Traditional models require up to months of run time to simulate the globe at high resolution. This proves to be inefficient when high resolution is only desired in localized areas of interest. AMR offers a flexible alternative by allowing increased refinement on desired sections of the grid that can move with the area of interest. A high order of accuracy is obtained and run time is drastically reduced as a result. The software package SAMRAI (Structured Adaptive Mesh Refinement Application Infrastructure) is used to aid in memory management and data communication. Standard MOM features of our model that are uncommon in AMR include leapfrog time integration, staggered tracer and momentum control volumes, and time step splitting of barotropic and baroclinic modes. We demonstrate how these features are implemented in the model and present test case comparisons of AMR verses fine resolution.
DE: 4255 Numerical modeling
SC: Ocean Sciences [OS]
MN: 2004 AGU Fall Meeting