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The temperature and nutrient concentrations in the surface layer, were normal for the season in all areas. An intense plankton bloom was ongoing in the eastern Skagerrak, in the Arkona Basin, the Hanö Bight and in an area in the northern part of the western Gotland Basin. Hydrogen sulphide was Last updated: Apr 23, 2014

REPORT FROM R/V ARGOS Survey period 20010226-20010304 Survey area The Skagerrak, the Kattegat, the Sound, and the Baltic Proper Principal SMHI SUMMARY The expedition was performed within SMHIs regular marine monitoring programme and covered the Skagerrak, the Kattegat, the Sound, and the Baltic Proper Last updated: Apr 23, 2014

Temperature as well as nutrient conditions in the surface layer were normal for the season in all areas except some temperatures in the Baltic, which were higher. In the Baltic oxygen concentration of the bottom water usually was lower than the mean value of the latest decade. Oxygen concentrations Last updated: Apr 23, 2014

REPORT FROM R/V ARGOS Survey period 2002-09-23 - 2002-09-28 Survey area The Skagerrak, the Kattegat, the Sound, and the Baltic Proper Principal SMHI SUMMARY The expedition was carried out within SMHI’s regular marine monitoring programme and covered the Skagerrak, the Kattegat, the Sound and the Baltic Last updated: Apr 23, 2014

Surface temperatures were 3 to 5 oC higher than normal in all areas. All nutrients showed, for the season, normal values, with the exception of silicate that showed enhanced concentrations in the eastern Skagerrak and the northern Kattegat. Oxygen concentrations below 2 ml/l were detected in the Last updated: Apr 23, 2014

15 to 20 metres at Fladen. The Baltic Sea Surface water temperatures varied between 3.4 and 5.1°C, which is normal of the season. The lowest temperature was measured in the northwestern Baltic and the highest at Arkona in the south. The thermocline and the halocline were located at the same depth, in Last updated: Apr 23, 2014

corresponds to 3.7 ml/l. The Baltic Sea Surface water temperatures varied between 15.3° and 17.3°C, which is normal of the season. The lowest temperature was measured at BY1 and at Christiansö, while the northern stations, the Fårö and Norrköping Deep, had the highest temperature. The thermocline was located Last updated: Apr 23, 2014

Surface temperatures in the Skagerrak, the Kattegat and in the Baltic except the southern Baltic were higher than normal. The nutrients showed, for the season, mostly normal values. Oxygen concentrations below 2 ml/l were found at depths greater than 80 metres in the whole Baltic Proper. …

Last updated: Apr 23, 2014

The temperature as well as nutrient conditions in the surface layer were normal for the season in all areas with the exception of southeastern Skagerrak, where a watermass with elevated nitrate and silicate concentrations were found. Oxygen concentrations below 2 ml/, were found at depths exceeding Last updated: Apr 23, 2014

Nutrient concentrations were normal for the season in most areas, with the exception of the Eastern and Northern Gotland Basins where phosphate and silicate showed elevated levels. After the latest inflow to the Baltic in January, the deep waters of the Arkona Basin, Bornholm Basin and the major Last updated: Apr 23, 2014