Energetics analysis of the observed and simulated general circulation using three-dimensional normal mode expansions

Hiroshi Tanaka; Ernest C. Kung; Wayman E. Baker

doi:10.3402/tellusa.v38i5.11728

Energetics analysis of the observed and simulated general circulation using three-dimensional normal mode expansions

Tellus

Volume 38 (1986): Issue 5

By: Hiroshi Tanaka, Ernest C. Kung and Wayman E. Baker

Open Access

|Jan 1986

Abstract

The energetics characteristics of the observed and simulated general circulation are analyzed using three-dimensional normal mode expansions. The data sets involved are the Goddard Laboratory for Atmospheres (GLA) analysis and simulation data and the Geophysical Fluid Dynamics Laboratory (GFDL) analysis data. The spectral energy properties of the Rossby and gravity modes and energy transformations are presented.

Significant influences of model characteristics and the assimilation techniques are observed in the barotropic energy spectrum, particularly for the gravity mode. Energy transformations of the zonal mean field in the GLA analysis and simulation are similar, but distinctly different from that in the GFDL analysis. However, overall, the energy generation in the baroclinic mode is largely balanced by the sink in the barotropic mode. The present study may demonstrate utilities of the three-dimensional normal mode energetics in the analysis of the general circulation.

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Articles in this issue

DOI: https://doi.org/10.3402/tellusa.v38i5.11728 | Journal eISSN: 3035-9554

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Language: English

Page range: 412 - 428

Submitted on: Sep 16, 1985

Accepted on: Jan 28, 1986

Published on: Jan 1, 1986

Published by: Stockholm University Press

In partnership with: Paradigm Publishing Services

© 1986 Hiroshi Tanaka, Ernest C. Kung, Wayman E. Baker, published by Stockholm University Press
This work is licensed under the Creative Commons Attribution 4.0 License.

Volume 38 (1986): Issue 5