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| Titel |
On the representation of regional characteristics by hydrographic measurements at central stations in four deep basins of the Baltic Sea |
| VerfasserIn |
J. H. Reissmann |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1812-0784
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| Digitales Dokument |
URL |
| Erschienen |
In: Ocean Science ; 2, no. 1 ; Nr. 2, no. 1 (2006-07-20), S.71-86 |
| Datensatznummer |
250000407
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| Publikation (Nr.) |
 copernicus.org/os-2-71-2006.pdf |
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| Zusammenfassung |
| In this work the eddy resolving data sets of salinity, temperature, and
oxygen content aquired in the framework of the German-Russian project
MESODYN (MESOscale DYNamics) in the Arkona Basin, the Bornholm
Basin, the Stolpe Furrow, and the Eastern Gotland Basin during summer and
winter stratification situations are utilized to examine to which extent the
observations at the central monitoring stations within these basins are
representative for the spatial mean state of the corresponding region with
respect to comparative monitoring purposes of the whole Baltic Sea. The
investigation covers profiles of salinity, potential temperature, oxygen
content, potential density, and squared buoyancy or Brunt-Väisälä
frequency. Moreover, some parameters of the halocline, namely its depth,
thickness, and upper and lower boundaries, and the first baroclinic Rossby
radii are subject to the investigation. The profiles match best for the
squared buoyancy or Brunt-Väisälä frequency. The profiles of
salinity match best in the Eastern Gotland Basin and worst in the Arkona
Basin both for summer and winter stratification situations. The overall
agreement for the halocline parameters is good. The baroclinic Rossby radii
match their spatial mean values well, if the depth range considered for their
calculation is restricted to the mean depth in each region at the bottom
side. In doing so they also match the spatial mean values of the first
baroclinic Rossby radii calculated considering the whole depth range at each
station. Overall, the regional characteristics of the investigated quantities
and parameters are represented well by the hydrographic measurements at the
central stations in the four regions in spite of some significant differences
between the spatial mean states and the observations at the central stations.
In particular, the observations at the central stations seem to be usefull
for comparisons between these regions. However, the observed differences may
affect regional investigations covering just a single region. |
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