The comparison of the forecasted and measured currents in the deep part of the Southern Baltic Sea in 1999

• Autorzy: Krzymiński W.

Identyfikatory

DOI

01.3001.0008.8049

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

Southern Baltic Sea; forecasts; HIROMB

• Wydawca: Index Copernicus Sp. z o.o.
• Czasopismo: Biuletyn Instytutu Morskiego w Gdańsku
• Rocznik: 2001
• Tom: Vol. 28, No. 2
• Strony: 55--64
• Opis fizyczny: Bibliogr. 11 poz., rys.

Twórcy

autor

Krzymiński W.

• Institute of Meteorology and Water Management Maritime Branch in Gdynia, Poland

Bibliografia

• [1] Funkquist L., P. Ljungemyr, 1997, Validation of HIROMB during 1995-96, SMHI Oceanografi 67.
• [2] Gajewski J., L. Gajewski, 1997, Modelling of drift and spreading in view of rhodamine B tracing, Bull. Mar. Inst. 24, 1, 59-67.
• [3] Gajewski J., L. Gajewski, A Stachowiak, 1999, Verification of drift models of rhodamine spill, life raft and dummy man during experiment POLRODEX'97, Bull. Mar. Inst 26, 1, 87-95.
• [4] Kaźmierski J., 1999, Currents in the open Baltic Sea measured During POLRODEX'97 experiment preliminary interpretation, Bull. Mar. Inst. 26, 1, 69-75.
• [5] Kleine E., 1994, Das operationelle Modell des BSH für Nordsee und Ostsee, Konzeption und Übersicht, Bundesamt für Seeschiffahrt und Hydrographie, Hamburg.
• [6] Krzymiński W., 1993, Development of the method für determination of the flow field in the surface layer of the Gulf of Gdansk on the basis of in situ measurements, Report of IMWM MB, Gdynia, manuscript. (In Polish).
• [7] Krzymiński W., 1997, Spatial and temporal variations of the current field in the Gulf of Gdansk during POLRODEX'96 experiment. HIROMB Workshop, Maritime Institute, Gdansk, unpublished presentation.
• [8] Krzymiński W., 1998, Investigation of the Current Field by Means of Shipborne ADCP during the Field Experiment in the Gulf of Gdansk, The 2nd BAL TEX Conference. Rügen, Germany, May 1998, unpublished presentation.
• [9] Krzymiński W., 1999, HIROMB Forecasts Versus Spatial Measurements of the Currents by Means of RDI's BBADCP During The Polrodex '97 Experiment, Bull. Mar. lnst. 26, 1, 77-86.
• [10] Krzymiński W., 2001 , The currents. [in:] Environmental conditions ofthe Polish Zone of the Southern Baltic Sea in 1999, IMGW OM, Gdynia, in press. (In Polish).
• [11] Robakiewicz M., 1999, Assessment of the temporal variability of hydro-physical parameters in the HIROM Model, Bull. Mar. Inst. 26, 1, 57-68.