Analysis of a general circulation model. 2. Distribution of kinetic energy in the South Atlantic and Kuroshio/Oyashio systems

Z. Garraffo, S. L. Garzoli, W. Haxby, D. Olson

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

The energy of the model transient eddies at 37.5 m is compared with Geosat altimeter observations, for these systems. The model shows areas of transient motions overlapping the ones obtained from Geosat altimeter data. For the South Atlantic Ocean, the modeled eddy kinetic energy is smaller than the one observed with Geosat, by a factor of three for area average on the whole South Atlantic region, and by a factor of four for its western boundary. For the Kuroshio region, the energy level of the modeled transient motions is comparable with Geosat observations, but the model eddy activity is more concentrated in the Kuroshio Current and not in the Kuroshio extension. The observations show the opposite. For the South Atlantic Ocean, a comparison is also done between model eddy kinetic energy with values obtained from surface drifters. The analysis shows differences in the western boundary, and good agreement across the South Atlantic Ocean between 35°S and 45°S. -from Authors

Original languageEnglish (US)
Pages (from-to)20,139-20,153
JournalJournal of Geophysical Research
Volume97
Issue numberC12
StatePublished - Jan 1 1992
Externally publishedYes

ASJC Scopus subject areas

  • Geophysics
  • Forestry
  • Oceanography
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Palaeontology

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