Wyniki wyszukiwania - BazTech

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Verification of drift models of rhodamine spill, life-raft and dummy-man during experiment POLRODEX'97

Gajewski J., Gajewski L., Stachowiak A.

Biuletyn Instytutu Morskiego w Gdańsku

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1999

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Vol. 26, No. 1

87--106

EN

The part of the experiment POLRODEX'97 was a set of drift experiments including the rhodamine spill, life raft and dummy-man drifting experiment. The experiments have been realised in order to both verify the hydrodynamic model results and increase the knowledge on drifting object behaviour including the possibilities to model the object drift using the operational results of HIROMB model. The results of the drifting experiments are shown. Some deficiencies in operational hydrodynamic and meteorological models are named.

2

On the possibility of forecasting water level on the basis of the HIROMB model

Kałas M., Szefler K.

Biuletyn Instytutu Morskiego w Gdańsku

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1999

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Vol. 26, No. 1

39--45

EN

The following paper presents a comparison of water Level data taken during the POLRODEX'97 experiment by some Polish water Level gauges situated around the Gulf of Gdansk with results computed for this period using the High Resolution Operational Model for the Baltic Sea (HIROMB ). Additionally sea level changes near the oil-drilling platform BETA were computed using data from pressure sensors and compared with results of the model. It is found that observed and computed values of sea level change are in good agreement.

3

General information on the data, collected during the experiment POLRODEX '97

Staśkiewicz A.

Biuletyn Instytutu Morskiego w Gdańsku

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1999

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Vol. 26, No. 1

7--12

EN

The HIROMB model for the Baltic Sea hydrodynamic forecast, at present being run preoperationally in SMHI, covers completely the Polish exclusive economic zone of the sea. The measuring campaign POLRODEX '96 was organised and coordinated by the Maritime Institute especially for calibration and verification of numerical models in summer 1996 in the Gulf of Gdansk Five Polish and one Swedish institution were involved in the campaign. After the experiment, which resulted in many valuable materials, it was decided to continue such campaigns every year. In 1997, also in the Gulf of Gdansk, a new experiment POLRODEX '97 was organised, in which thirteen institutions from Poland, Russia and Sweden participated. A list of the data, collected during the POLRODEX '97, is provided.

4

Assessment of the temporal variability of hydro-physical parameters in the HIROMB model

Robakiewicz M.

Biuletyn Instytutu Morskiego w Gdańsku

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1999

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Vol. 26, No. 1

57--68

EN

Comparison between long-term measurements carried out during POLRODEX'97 experiment and results from HIROMB is presented. Analysis based on graphical presentation and statistical measure (reliability index) shows that model reproduces current direction fairly well, while current magnitude is underestimated. Time variability of salinity, temperature and water level variation reproduced by the model indicates discrepancies from observations.

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Validation of hydrodynamic models of the Baltic Sea in polish waters - HIROMB as an example

Gajewski J., Staśkiewicz A.

Biuletyn Instytutu Morskiego w Gdańsku

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1998

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Vol. 25, No. 2

83--92

EN

Proper description of thermo-hydrodynamic processes in seas is important for scientific and for many practical purposes. Among mathematical models, deterministic models, basing on the set of conservation equations, and calculating the response of the modelled system on the external forcing, are now being most intensively used by researchers. Reliable forecast of thermo-hydrodynamic processes is one of the most important applications of the geophysical fluid dynamics. In this paper, we concentrate on problems of validation of the particular deterministic operational model for the Baltic Sea, the HIROMB model. Possibilities of observations and measurements useful for the model validation in the Polish zone of the Baltic Sea are discussed.