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    Wyświetlanie 1-15 z 15
    Tytuł:
    HIROMB, an operational eddy-resolving model for the Baltic Sea
    Autorzy:
    Funkquist, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/972865.pdf
    Data publikacji:
    2001
    Wydawca:
    Instytut Morski w Gdańsku
    Tematy:
    HIROMB
    forcing
    Opis:
    HIROMB is a 3-dimensional baroclinic model of the North Sea and the Baltic Sea, designed for daily operational use. The model is mainly developed by Eckhard Kleine at the German Federal Maritime and Hydrographic Agency (BSH) in Hamburg, Germany, and is based on a similar model, running in operational mode at that institution. The operational forecasts at SMHI starled already in 1995 with a daily 24-hour forecast and were later extended to 48 hours. The model is forced by SMHI's operational atmospheric model (HIRLAM), but also by river runoff from an operational hydrological model and wave radiation stress from a wind wave model. The present version of the model is set up on a nested grid, where a 12 nautical mile (nm) grid covers the whole area, while Skagerrak, Kattegat, the Belt Sea and the Baltic Sea are covered with a 1 nm grid. A parallelized version of the model has been developed and runs on a distributed memory parallel computer.
    Źródło:
    Biuletyn Instytutu Morskiego w Gdańsku; 2001, 28, 2; 7-16
    1230-7424
    2450-5536
    Pojawia się w:
    Biuletyn Instytutu Morskiego w Gdańsku
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    HIROMB, an operational eddy-resolving model for the Baltic Sea
    Autorzy:
    Funkquist, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/1920629.pdf
    Data publikacji:
    2001
    Wydawca:
    Instytut Morski w Gdańsku
    Tematy:
    HIROMB
    forcing
    Opis:
    HIROMB is a 3-dimensional baroclinic model of the North Sea and the Baltic Sea, designed for daily operational use. The model is mainly developed by Eckhard Kleine at the German Federal Maritime and Hydrographic Agency (BSH) in Hamburg, Germany, and is based on a similar model, running in operational mode at that institution. The operational forecasts at SMHI starled already in 1995 with a daily 24-hour forecast and were later extended to 48 hours. The model is forced by SMHI's operational atmospheric model (HIRLAM), but also by river runoff from an operational hydrological model and wave radiation stress from a wind wave model. The present version of the model is set up on a nested grid, where a 12 nautical mile (nm) grid covers the whole area, while Skagerrak, Kattegat, the Belt Sea and the Baltic Sea are covered with a 1 nm grid. A parallelized version of the model has been developed and runs on a distributed memory parallel computer.
    Źródło:
    Biuletyn Instytutu Morskiego w Gdańsku; 2001, 28, 2; 7-16
    1230-7424
    2450-5536
    Pojawia się w:
    Biuletyn Instytutu Morskiego w Gdańsku
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Quality assessment of the hiromb water level forecast for the Polish coastal zone
    Autorzy:
    Kowalska, B.
    Stanisławczyk, I.
    Mykita, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/972862.pdf
    Data publikacji:
    2001
    Wydawca:
    Instytut Morski w Gdańsku
    Tematy:
    HIROMB
    coastline zone
    Opis:
    The aim of this paper is to compare the observed water level and the results of HIROMB model for the same period. Real sea level values, collected in the data base of the Institute of Meteorology and Water Management in Gdynia were measured by Polish water gauges situated along tlze west part of coast and around the Gulf of Gdansk. The analysed data were from the period 15.08.1998 - 28.05.1999, and the forecast lead time was equal to 24 hours. The assumed reference level, equal to 500 cm, caused too high forecast levels and marked differences between observed and computed sea levels. In order to improve the results of modelling a new reference level has been established. Having introduced the new reference level, a better agreement between the observed and computed values was obtained in most cases. The validation of modelled results was carried out by means of the chosen statistical indicators.
    Źródło:
    Biuletyn Instytutu Morskiego w Gdańsku; 2001, 28, 2; 65-70
    1230-7424
    2450-5536
    Pojawia się w:
    Biuletyn Instytutu Morskiego w Gdańsku
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of measured and modelled water temperature for the southern Baltic Sea during 1998-2001
    Autorzy:
    Piliczewski, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1920638.pdf
    Data publikacji:
    2001
    Wydawca:
    Instytut Morski w Gdańsku
    Tematy:
    HIROMB
    water temperature
    Opis:
    The article presents results of verification of water temperature forecasts from HIROMB model, which were compared with every-day measurements from some selected JMGW coastal hydrological stations during 1998-2001. In addition to that the model results were also confronted with CTD measurements from the Gdańsk Deep.
    Źródło:
    Biuletyn Instytutu Morskiego w Gdańsku; 2001, 28, 2; 89-95
    1230-7424
    2450-5536
    Pojawia się w:
    Biuletyn Instytutu Morskiego w Gdańsku
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of measured and modelled water temperature for the southern Baltic Sea during 1998-2001
    Autorzy:
    Piliczewski, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/972881.pdf
    Data publikacji:
    2001
    Wydawca:
    Instytut Morski w Gdańsku
    Tematy:
    HIROMB
    water temperature
    Opis:
    The article presents results of verification of water temperature forecasts from HIROMB model, which were compared with every-day measurements from some selected JMGW coastal hydrological stations during 1998-2001. In addition to that the model results were also confronted with CTD measurements from the Gdańsk Deep.
    Źródło:
    Biuletyn Instytutu Morskiego w Gdańsku; 2001, 28, 2; 89-95
    1230-7424
    2450-5536
    Pojawia się w:
    Biuletyn Instytutu Morskiego w Gdańsku
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Quality assessment of the HIROMB simulation
    Autorzy:
    Eigenheer, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1920450.pdf
    Data publikacji:
    1999
    Wydawca:
    Instytut Morski w Gdańsku
    Tematy:
    HIROMB
    quality assessment
    Opis:
    The High Resolution Operational Model for the Baltic (HIROMB) consists of a leveled threedimensional primitive equation model, including one equation boundary layer dynamics and a viscous- plastic ice model. At SMHI it is driven by the High Resolution Limited Area meteorological Model (HIRLAM). and it has been running continuously in a pre-operational mode since October 1995. The quality assessment concentrates on the last year of the simulation from April 1997 to April 1998.
    Źródło:
    Biuletyn Instytutu Morskiego w Gdańsku; 1999, 26, 1; 27-37
    1230-7424
    2450-5536
    Pojawia się w:
    Biuletyn Instytutu Morskiego w Gdańsku
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of the temporal variability of hydro-physical parameters in the HIROMB model
    Autorzy:
    Robakiewicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1920489.pdf
    Data publikacji:
    1999
    Wydawca:
    Instytut Morski w Gdańsku
    Tematy:
    POLRODEX
    HIROMB model
    Opis:
    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.
    Źródło:
    Biuletyn Instytutu Morskiego w Gdańsku; 1999, 26, 1; 57-68
    1230-7424
    2450-5536
    Pojawia się w:
    Biuletyn Instytutu Morskiego w Gdańsku
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    General information on the data, collected during the experiment POLRODEX 97
    Autorzy:
    Staśkiewicz, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1920504.pdf
    Data publikacji:
    1999
    Wydawca:
    Instytut Morski w Gdańsku
    Tematy:
    HIROMB model
    POLRODEX
    Opis:
    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.
    Źródło:
    Biuletyn Instytutu Morskiego w Gdańsku; 1999, 26, 1; 7-12
    1230-7424
    2450-5536
    Pojawia się w:
    Biuletyn Instytutu Morskiego w Gdańsku
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Quality assessment of the hiromb water level forecast for the Polish coastal zone
    Autorzy:
    Kowalska, B.
    Stanisławczyk, I.
    Mykita, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1920604.pdf
    Data publikacji:
    2001
    Wydawca:
    Instytut Morski w Gdańsku
    Tematy:
    HIROMB
    coastline zone
    Opis:
    The aim of this paper is to compare the observed water level and the results of HIROMB model for the same period. Real sea level values, collected in the data base of the Institute of Meteorology and Water Management in Gdynia were measured by Polish water gauges situated along tlze west part of coast and around the Gulf of Gdansk. The analysed data were from the period 15.08.1998 - 28.05.1999, and the forecast lead time was equal to 24 hours. The assumed reference level, equal to 500 cm, caused too high forecast levels and marked differences between observed and computed sea levels. In order to improve the results of modelling a new reference level has been established. Having introduced the new reference level, a better agreement between the observed and computed values was obtained in most cases. The validation of modelled results was carried out by means of the chosen statistical indicators.
    Źródło:
    Biuletyn Instytutu Morskiego w Gdańsku; 2001, 28, 2; 65-70
    1230-7424
    2450-5536
    Pojawia się w:
    Biuletyn Instytutu Morskiego w Gdańsku
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The comparison of the forecasted and measured currents in the deep part of the Southern Baltic Sea in 1999
    Autorzy:
    Krzymiński, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/972854.pdf
    Data publikacji:
    2001
    Wydawca:
    Instytut Morski w Gdańsku
    Tematy:
    Southern Baltic Sea
    forecasts
    HIROMB
    Opis:
    This paper presents results of the investigation carried out in frame of research project of Institute of Meteorology and Water Management Maritime Branch in Gdynia (IWM-MB) in the y ear 2000. The goal of the project was to determine the conformity of the sea current forecasts for the layer 8 - I 2 meters of the open sea part of the Southern Baltic Sea, as produced by the hydrodynamic model of the Baltic Sea- HIROMB [5}, with the measurements. Contrary to the results of previous experiments as in the case of the POLRODEX ones [7, 8, 9}, during present study it was expected to detect behaviour of the model far from the influence of the boundary like coastline as well as bottom friction in the shallow water areas. The analysed data were collected during five routine cruises of r/v Baltica organized by IWMMBsince February until September I999 [10], when cruise track started/rom the Gdansk Deep, next along the northern border of the Polish EEZ, ending in the Bomholm Deep area usually. On the basis of the current vectors recorded by means of the ship mounted ADCP as the 250 m average values in the layer 7.5 to 12.5 meters, mean values related to the model grid have been calculated and statistically assessed. These mean vectors have been used for compan·son of forecasted values. Consequently, the sets of values of the differences between measured and predicted currents were statistically evaluated both regarding the direction and the module of the currents as well as the current vector components (Vx, Vy) separately.
    Źródło:
    Biuletyn Instytutu Morskiego w Gdańsku; 2001, 28, 2; 55-64
    1230-7424
    2450-5536
    Pojawia się w:
    Biuletyn Instytutu Morskiego w Gdańsku
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Verification of drift models of rhodamine spill, life-raft and dummy-man during experiment POLRODEX97
    Autorzy:
    Gajewski, J.
    Gajewski, L.
    Stachowiak, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1920508.pdf
    Data publikacji:
    1999
    Wydawca:
    Instytut Morski w Gdańsku
    Tematy:
    POLRODEX
    HIROMB model
    rhodamine spill
    Opis:
    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.
    Źródło:
    Biuletyn Instytutu Morskiego w Gdańsku; 1999, 26, 1; 87-106
    1230-7424
    2450-5536
    Pojawia się w:
    Biuletyn Instytutu Morskiego w Gdańsku
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The comparison of the forecasted and measured currents in the deep part of the Southern Baltic Sea in 1999
    Autorzy:
    Krzymiński, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/1920609.pdf
    Data publikacji:
    2001
    Wydawca:
    Instytut Morski w Gdańsku
    Tematy:
    Southern Baltic Sea
    forecasts
    HIROMB
    Opis:
    This paper presents results of the investigation carried out in frame of research project of Institute of Meteorology and Water Management Maritime Branch in Gdynia (IWM-MB) in the y ear 2000. The goal of the project was to determine the conformity of the sea current forecasts for the layer 8 - I 2 meters of the open sea part of the Southern Baltic Sea, as produced by the hydrodynamic model of the Baltic Sea- HIROMB [5}, with the measurements. Contrary to the results of previous experiments as in the case of the POLRODEX ones [7, 8, 9}, during present study it was expected to detect behaviour of the model far from the influence of the boundary like coastline as well as bottom friction in the shallow water areas. The analysed data were collected during five routine cruises of r/v Baltica organized by IWMMBsince February until September I999 [10], when cruise track started/rom the Gdansk Deep, next along the northern border of the Polish EEZ, ending in the Bomholm Deep area usually. On the basis of the current vectors recorded by means of the ship mounted ADCP as the 250 m average values in the layer 7.5 to 12.5 meters, mean values related to the model grid have been calculated and statistically assessed. These mean vectors have been used for compan·son of forecasted values. Consequently, the sets of values of the differences between measured and predicted currents were statistically evaluated both regarding the direction and the module of the currents as well as the current vector components (Vx, Vy) separately.
    Źródło:
    Biuletyn Instytutu Morskiego w Gdańsku; 2001, 28, 2; 55-64
    1230-7424
    2450-5536
    Pojawia się w:
    Biuletyn Instytutu Morskiego w Gdańsku
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On the possibility of forecasting water level on the basis of the HIROMB model
    Autorzy:
    Kałas, M.
    Szefler, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1920495.pdf
    Data publikacji:
    1999
    Wydawca:
    Instytut Morski w Gdańsku
    Tematy:
    water level
    HIROMB model
    Opis:
    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.
    Źródło:
    Biuletyn Instytutu Morskiego w Gdańsku; 1999, 26, 1; 39-45
    1230-7424
    2450-5536
    Pojawia się w:
    Biuletyn Instytutu Morskiego w Gdańsku
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    HIROMB forecasts versus spatial measurements of the currents by means of rdi's BBADCP during the POLRODEX'97 experiment
    Autorzy:
    Krzymiński, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/1920506.pdf
    Data publikacji:
    1999
    Wydawca:
    Instytut Morski w Gdańsku
    Tematy:
    HIROMB forecasts
    measurements
    POLRODEX'97 experiment
    Opis:
    The paper presents the observations of the flow field within central part of the Gulf of Gdansk, which have been carried out during POLRODEX'97 experiment in September 1997 by means of BBADCP (Broad Band Acoustic Doppler Current Profiler). In the paper some results of comparison between predicted values and measured are presented as well. The goal of the experiment it was to collect the data in order to verify numerical model calculations and to study the method of the flow field reconstruction. The cruise took place on the RV BALTICA, which carried a shipboard RDI' s BBADCP measuring device. The measurements were carried out along parallel transects with 30 s frequency of the collected averaged bins, while velocities of the current were computed relative to the bottom. The flow fields were examined at alti-meter layers from 8 meters depth down to the bottom layer on 22 -24 of September 1997. For the analysis, the data for one layer (mid value 12 m.) were selected and prepared for the comparison. On the basis of the results of the measurements, quasicsynoptic flow fields were reconstructed. It made possible to compare them with the results of the HIROMB forecasts. In pre-analysis phase the two forecasts, i.e.: 24 hours for 22nd and 6 hours for 23rd forecast were compared with the measurements. It showed us that the best result would be obtained for shortest time span between measurements and forecast. So, for further analysis the 6 hours forecast for 23rd was used. Then, the statistical analysis of differences was carried out. In order to find any regularity of the differences distribution it is discussed their spatial layout as well. In general, the most significant differences occurred in the northern part of the investigated area. Differences increased from the centre of the gulf toward east and north. It was clearly seen that model reproduce current velocities and directions well mainly along the Hel Peninsula and in central part of the Gulf In other areas, velocities of the predicted currents are of another order of magnitude than measured values. Despite the results of the comparison between measured and modelled values, the collected data showed well-expressed pattern of the flow in the gulf what could be studied further.
    Źródło:
    Biuletyn Instytutu Morskiego w Gdańsku; 1999, 26, 1; 77-86
    1230-7424
    2450-5536
    Pojawia się w:
    Biuletyn Instytutu Morskiego w Gdańsku
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Validation of hydrodynamic models of the Baltic Sea in polish waters - HIROMB as an example
    Autorzy:
    Gajewski, J.
    Staśkiewicz, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1920341.pdf
    Data publikacji:
    1998
    Wydawca:
    Instytut Morski w Gdańsku
    Tematy:
    HIROMB model
    thermo-hydrodynamic processes
    Opis:
    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.
    Źródło:
    Biuletyn Instytutu Morskiego w Gdańsku; 1998, 25, 2; 83-92
    1230-7424
    2450-5536
    Pojawia się w:
    Biuletyn Instytutu Morskiego w Gdańsku
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-15 z 15

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