Variability of mesoscale eddies in the pacific ocean simulated by an eddy resolving OGCM

B. Y. Yim, Y. Noh, S. H. You, J. H. Yoon, B. Qiu

Research output: Chapter in Book/Report/Conference proceedingChapter


Almost everywhere in the open ocean, the kinetic energy of the flow field is dominated by mesoscale variability. Mesoscale eddies have the spatial scales equivalent to the Rossby radius of deformation, varying roughly from some 10 km in the subtropical region to a few 100 km in the tropics. The OGCM (ocean general-circulation model) used in this study (RIAM Ocean Model; RIAMOM) is the primitive OGCM with a free surface. The model was integrated for 25 years using ES, which is long enough for the upper ocean to reach quasi-equilibrium. Each PN is a system with a shared memory, consisting of 8 vector-type arithmetic processors, a 16GB main memory system, a remote access control unit, and I/O processors. The generation of mesoscale eddies in the ocean is dominated by baroclinic instability, which can be estimated by the temperature structure of the ocean. According to theoretical analyses, the growth rate of baroclinic instability is proportional to (f/N)dU/dz. A good agreement is found in general between the mesoscale eddy field in the North Pacific Ocean between the simulated and observed data. © 2007

Original languageEnglish
Title of host publicationParallel Computational Fluid Dynamics 2006
PublisherElsevier Ltd
Number of pages8
ISBN (Print)9780444530356
Publication statusPublished - 2007
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Chemical Engineering


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