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R. Rõõm, A. Männik, A. Luhamaa University of Tartu, Estonia

Nonhydrostatic HIRLAM With Semi-Lagrangian Semi-Implicit Dynamic Core in High-Resolution NWP Environment. R. Rõõm, A. Männik, A. Luhamaa University of Tartu, Estonia. At Tartu University (UT), a NH SISL extension to HIRLAM is developed.

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R. Rõõm, A. Männik, A. Luhamaa University of Tartu, Estonia

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  1. Nonhydrostatic HIRLAM With Semi-Lagrangian Semi-Implicit Dynamic Core in High-Resolution NWP Environment R. Rõõm, A. Männik, A. Luhamaa University of Tartu, Estonia

  2. At Tartu University (UT), a NH SISL extension to HIRLAM is developed. • Since September 2005 the NH SISL model is running with HIRLAM v.6.4.0 in a near-operational regime at Estonian Meteorological and Hydrological Institute (EMHI). • This is a collaboration effort between UT, EMHI and Finnish Meteorological Institute (FMI), initiated in the end of 2003, with an aim to develop and test the nonhydrostatic dynamical core with HIRLAM physics and in HIRLAM computational environment. • The project aims on high-precision presentation of local effects and improvement in short range forecasting. The advances are expected mostly in precipitation event or local wind modelling and in increase of severe weather forecasting precision. In addition, the high resolution NWP data are beneficial to wide range of practical and scientific applications like air pollution modelling or coastal climate research. • Besides scientific and testing tasks, the model provides also short-range NWP up to +36 h with 10 km and 3.3 km resolutions, which is the main interest for EMHI

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