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    • Keywords


      Limited-area shallow water model; nonlinear normal mode initialization (NMI); explicit nonlinear normal mode initialization (ENMI); implicit nonlinear normal mode initialization (INMI); potential enstrophy

    • Abstract


      The explicit nonlinear normal mode initialization (ENMI) scheme is applied to a tropical barotropic limited area shallow water model in spherical coordinates. The model is formulated by considering potential enstrophy conserving finite difference scheme. It is seen from the results of this study that the ENMI scheme is fully capable of filtering out the spurious gravity wave oscillations. The results are compared with those using an implicit nonlinear normal mode initialization (INMI). The latter scheme gives equally satisfactory results, requiring less computational time than the explicit scheme.

    • Author Affiliations


      Susmita Majumdar1 D R C Nair1 R S Saraswat1 A Chandrasekar1

      1. Department of Physics and Meteorology, Indian Institute of Technology, Kharagpur - 721 302, India
    • Dates

  • Journal of Earth System Science | News

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      Posted on July 25, 2019

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