Variability of temperature and salinity over the last decade in selected regions of the southern Baltic Sea

Changes in the basic physical properties of selected areas of the Baltic Proper were analysed on the basis of the results of a 12-year series of high-resolution measurements collected during cruises of r/v "Oceania". The high-resolution CTD sections covered three main basins: the Bornholm...

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Main Authors: Daniel Rak, Piotr Wieczorek
Format: Article
Language:English
Published: Institute of Oceanology of the Polish Academy of Sciences 2012-06-01
Series:Oceanologia
Subjects:
Online Access:http://www.iopan.gda.pl/oceanologia/54_3.html#A1
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author Daniel Rak
Piotr Wieczorek
author_facet Daniel Rak
Piotr Wieczorek
author_sort Daniel Rak
collection DOAJ
description Changes in the basic physical properties of selected areas of the Baltic Proper were analysed on the basis of the results of a 12-year series of high-resolution measurements collected during cruises of r/v "Oceania". The high-resolution CTD sections covered three main basins: the Bornholm Basin, Słupsk Furrow and Gdańsk Basin. Positive temperature trends of 0.11 and 0.16&deg;C year<sup>-1</sup> were observed in the surface and deep layers respectively. The salinity trend was also positive. The rise in the air temperature has probably caused the increase in surface water temperature, while advection has been of greater significance in the deep layer. The increase in salinity coincides with the more frequent occurrence of small and medium-size inflows through the Danish Straits, even though large inflows are evidently less frequent than used to be the case. The seasonal variability of temperature in the water column was analysed. The phase shift in the seasonal evolution with depth is described. The maximum temperature shift in the waters investigated varies from 32 to 38 days.
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institution Kabale University
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spelling doaj-art-3974babd2dd24137987a64bb4caed4ba2025-08-20T03:49:12ZengInstitute of Oceanology of the Polish Academy of SciencesOceanologia0078-32342012-06-01543339354Variability of temperature and salinity over the last decade in selected regions of the southern Baltic SeaDaniel RakPiotr WieczorekChanges in the basic physical properties of selected areas of the Baltic Proper were analysed on the basis of the results of a 12-year series of high-resolution measurements collected during cruises of r/v "Oceania". The high-resolution CTD sections covered three main basins: the Bornholm Basin, Słupsk Furrow and Gdańsk Basin. Positive temperature trends of 0.11 and 0.16&deg;C year<sup>-1</sup> were observed in the surface and deep layers respectively. The salinity trend was also positive. The rise in the air temperature has probably caused the increase in surface water temperature, while advection has been of greater significance in the deep layer. The increase in salinity coincides with the more frequent occurrence of small and medium-size inflows through the Danish Straits, even though large inflows are evidently less frequent than used to be the case. The seasonal variability of temperature in the water column was analysed. The phase shift in the seasonal evolution with depth is described. The maximum temperature shift in the waters investigated varies from 32 to 38 days.http://www.iopan.gda.pl/oceanologia/54_3.html#A1TemperatureSalinitySouthern Baltic SeaTrendSeasonal variability
spellingShingle Daniel Rak
Piotr Wieczorek
Variability of temperature and salinity over the last decade in selected regions of the southern Baltic Sea
Oceanologia
Temperature
Salinity
Southern Baltic Sea
Trend
Seasonal variability
title Variability of temperature and salinity over the last decade in selected regions of the southern Baltic Sea
title_full Variability of temperature and salinity over the last decade in selected regions of the southern Baltic Sea
title_fullStr Variability of temperature and salinity over the last decade in selected regions of the southern Baltic Sea
title_full_unstemmed Variability of temperature and salinity over the last decade in selected regions of the southern Baltic Sea
title_short Variability of temperature and salinity over the last decade in selected regions of the southern Baltic Sea
title_sort variability of temperature and salinity over the last decade in selected regions of the southern baltic sea
topic Temperature
Salinity
Southern Baltic Sea
Trend
Seasonal variability
url http://www.iopan.gda.pl/oceanologia/54_3.html#A1
work_keys_str_mv AT danielrak variabilityoftemperatureandsalinityoverthelastdecadeinselectedregionsofthesouthernbalticsea
AT piotrwieczorek variabilityoftemperatureandsalinityoverthelastdecadeinselectedregionsofthesouthernbalticsea