Variability in the saline water exchange between the Baltic and the Gulf of Gdansk by the sigma-coordinate model
A three-dimensional baroclinic sigma-coordinate model was applied to study the circulation and thermohaline variabilityin the coastal zone in the south-eastern Baltic Sea. The model is based on the Princeton Ocean Model code of Blumberg & Mellor(1987), known as POM, and has the horizontal...
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| Format: | Article |
| Language: | English |
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Elsevier
2003-03-01
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| Series: | Oceanologia |
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| Online Access: | http://www.iopan.gda.pl/oceanologia/45_1.html#A7 |
| _version_ | 1818571830928080896 |
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| author | Andrzej Jankowski |
| author_facet | Andrzej Jankowski |
| author_sort | Andrzej Jankowski |
| collection | DOAJ |
| description | A three-dimensional baroclinic sigma-coordinate model was applied to study the circulation and thermohaline variabilityin the coastal zone in the south-eastern Baltic Sea. The model is based on the Princeton Ocean Model code of Blumberg & Mellor(1987), known as POM, and has the horizontal resolution of ~5 km and 24 sigma-levels in the vertical. The hydrodynamic conditions and variability of water and salt exchange between the Gulf of Gdansk and the Baltic Proper, and the renewal of water masses in the Gulf of Gdansk due to atmospheric forcing are analyzed. The numerical simulations were performed with real atmospheric forcings as well as with homogeneous (spatially uniform) wind fields over the whole Baltic Sea. The numerical simulations showed that the atmospheric forcing (winds) can play a significant role in shaping the renewal of bottom saline waters in the Gulf of Gdansk. Two regions of inflow/outflow of saline waters responsible for the salinity regime were located. The overall water exchange between the Gulf and the Baltic Proper as well as the exchange of saline bottom waters appear to be strongly dependent on wind conditions. The net flux of water of salinity >9 PSU is of the order of 48000-100000 m<sup>3</sup> s<sup>-1</sup>. SE, E, S and NE winds were foundto exert the greatest influence on salinity conditions in the Gulf of Gdansk. Estimates of saline (salinity >9 PSU) water residencetime based on the model simulation yielded values from 46 days for SE winds to 153 days for NW winds. |
| first_indexed | 2024-12-14T18:49:29Z |
| format | Article |
| id | doaj.art-da96b135b26647298307c0cc53637c96 |
| institution | Directory Open Access Journal |
| issn | 0078-3234 |
| language | English |
| last_indexed | 2024-12-14T18:49:29Z |
| publishDate | 2003-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Oceanologia |
| spelling | doaj.art-da96b135b26647298307c0cc53637c962022-12-21T22:51:17ZengElsevierOceanologia0078-32342003-03-0145181105Variability in the saline water exchange between the Baltic and the Gulf of Gdansk by the sigma-coordinate modelAndrzej JankowskiA three-dimensional baroclinic sigma-coordinate model was applied to study the circulation and thermohaline variabilityin the coastal zone in the south-eastern Baltic Sea. The model is based on the Princeton Ocean Model code of Blumberg & Mellor(1987), known as POM, and has the horizontal resolution of ~5 km and 24 sigma-levels in the vertical. The hydrodynamic conditions and variability of water and salt exchange between the Gulf of Gdansk and the Baltic Proper, and the renewal of water masses in the Gulf of Gdansk due to atmospheric forcing are analyzed. The numerical simulations were performed with real atmospheric forcings as well as with homogeneous (spatially uniform) wind fields over the whole Baltic Sea. The numerical simulations showed that the atmospheric forcing (winds) can play a significant role in shaping the renewal of bottom saline waters in the Gulf of Gdansk. Two regions of inflow/outflow of saline waters responsible for the salinity regime were located. The overall water exchange between the Gulf and the Baltic Proper as well as the exchange of saline bottom waters appear to be strongly dependent on wind conditions. The net flux of water of salinity >9 PSU is of the order of 48000-100000 m<sup>3</sup> s<sup>-1</sup>. SE, E, S and NE winds were foundto exert the greatest influence on salinity conditions in the Gulf of Gdansk. Estimates of saline (salinity >9 PSU) water residencetime based on the model simulation yielded values from 46 days for SE winds to 153 days for NW winds.http://www.iopan.gda.pl/oceanologia/45_1.html#A7Baltic SeaGulf of GdanskWater and mass exchangeResidence time |
| spellingShingle | Andrzej Jankowski Variability in the saline water exchange between the Baltic and the Gulf of Gdansk by the sigma-coordinate model Oceanologia Baltic Sea Gulf of Gdansk Water and mass exchange Residence time |
| title | Variability in the saline water exchange between the Baltic and the Gulf of Gdansk by the sigma-coordinate model |
| title_full | Variability in the saline water exchange between the Baltic and the Gulf of Gdansk by the sigma-coordinate model |
| title_fullStr | Variability in the saline water exchange between the Baltic and the Gulf of Gdansk by the sigma-coordinate model |
| title_full_unstemmed | Variability in the saline water exchange between the Baltic and the Gulf of Gdansk by the sigma-coordinate model |
| title_short | Variability in the saline water exchange between the Baltic and the Gulf of Gdansk by the sigma-coordinate model |
| title_sort | variability in the saline water exchange between the baltic and the gulf of gdansk by the sigma coordinate model |
| topic | Baltic Sea Gulf of Gdansk Water and mass exchange Residence time |
| url | http://www.iopan.gda.pl/oceanologia/45_1.html#A7 |
| work_keys_str_mv | AT andrzejjankowski variabilityinthesalinewaterexchangebetweenthebalticandthegulfofgdanskbythesigmacoordinatemodel |