Testing the anelastic nonhydrostatic model EULAG as a prospective dynamical core of a numerical weather prediction model Part I: Dry benchmarks

• Autorzy: Rosa B. , Kurowski M.J. , Ziemiański M. Z.
• Języki publikacji: EN

Abstrakty

EN

In this paper, a feasibility of anelastic approach for numerical weather prediction (NWP) is examined. The study concerns the anelastic nonhydrostatic model EULAG as a prospective candidate for the new dynamical core of a high-resolution NWP model. Such an application requires a series of benchmark tests to be performed. The study presents the results of dry idealized two-dimensional linear and non-linear tests. They include evolution of cold and warm density currents in neutrally stratified atmosphere, inertia-gravity waves in short and long channels, as well as mountain gravity waves for a set of different flow regimes. Detailed comparison of the results with the reference solutions, based mainly on the results of compressible models, indicates a high level of conformity for all of the experiments. It verifies the anelastic approach as strongly consistent with the compressible one for a broad class of atmospheric problems. It also corroborates the robustness of EULAG numerics, an essential requirement of dynamical core of NWP model.

Słowa kluczowe

EN

density currents; mountain waves; inertia-gravity waves; dynamical core; anelastic equations

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2011
• Tom: Vol. 59, no. 6
• Strony: 1236--1266
• Opis fizyczny: Bibliogr. 25 poz.

Twórcy

autor

Rosa B.

autor

Kurowski M.J.

autor

Ziemiański M. Z.

• Institute of Meteorology and Water Management (IMGW), Warsaw, Poland,

Bibliografia

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