The Effect of the Finite Rossby Radius on Two-Dimensional Isotropic

Shin Ichiro Yanase

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


The effect of the finite outer Rossby radius on two-dimensional isotropic turbulence in a single-layered fluid is investigated using the modified cumulant expansion method. This type of turbulence may be considered as a model of geostrophic turbulence in the atmosphere. The beta effect is neglected in order to avoid extra complexity. It is found that turbulent motions with scale larger than the Rossby radius are strongly suppressed and consequently the inverse cascade of the energy is remarkably reduced. At large wavenumbers,the similarity law of the energy spectrum is identical to that of two-dimensional turbulence without rotation. The kinetic energy decreases in time, while the potential energy increases.

Original languageEnglish
Pages (from-to)2513-2520
Number of pages8
Journaljournal of the physical society of japan
Issue number8
Publication statusPublished - 1984

ASJC Scopus subject areas

  • Physics and Astronomy(all)


Dive into the research topics of 'The Effect of the Finite Rossby Radius on Two-Dimensional Isotropic'. Together they form a unique fingerprint.

Cite this