Calculation of a residual mean meridional circulation for a zonal-mean tracer transport model

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Because of their computational advantages, zonally-averaged chemical-radiative-transport models are widely used to investigate the distribution of chemical species and their change due to the anthropogenic chemicals in the lower and middle atmosphere. In general, the Lagrangian-mean formulation would be ideal to treat transport due to the zonal mean circulation and eddies. However, the Lagrangian formulation is difficult to use in practical applications. The most widely-used formulation for treating global atmospheric dynamics in two-dimensional models is the transformed Eulerian mean (TEM) equations. The residual mean meridional circulation (RMMC) in the TEM system is used to advect tracers. In this study, the ... continued below

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30 p.

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Choi, W.K.; Rotman, D.A. & Wuebbles, D.J. April 1, 1995.

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Description

Because of their computational advantages, zonally-averaged chemical-radiative-transport models are widely used to investigate the distribution of chemical species and their change due to the anthropogenic chemicals in the lower and middle atmosphere. In general, the Lagrangian-mean formulation would be ideal to treat transport due to the zonal mean circulation and eddies. However, the Lagrangian formulation is difficult to use in practical applications. The most widely-used formulation for treating global atmospheric dynamics in two-dimensional models is the transformed Eulerian mean (TEM) equations. The residual mean meridional circulation (RMMC) in the TEM system is used to advect tracers. In this study, the authors describe possible solution techniques for obtaining the RMMC in the LLNL two-dimensional chemical-radiative-transport model. In the first section, the formulation will be described. In sections 3 and 4, possible solution procedures will be described for a diagnostic and prognostic case, respectively.

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30 p.

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OSTI as DE95009474

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  • Other Information: PBD: [1995]

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  • Other: DE95009474
  • Report No.: UCRL-ID--119565
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/46648 | External Link
  • Office of Scientific & Technical Information Report Number: 46648
  • Archival Resource Key: ark:/67531/metadc686736

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  • April 1, 1995

Added to The UNT Digital Library

  • July 25, 2015, 2:21 a.m.

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  • Feb. 18, 2016, 11:49 a.m.

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Choi, W.K.; Rotman, D.A. & Wuebbles, D.J. Calculation of a residual mean meridional circulation for a zonal-mean tracer transport model, report, April 1, 1995; California. (digital.library.unt.edu/ark:/67531/metadc686736/: accessed December 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.