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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

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 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

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

Surface temperatures were normal or below normal throughout the area. No surface accumulations of cyanobacteria (blue green algae) were observed in the Baltic. Nutrient concentrations in the surface layer were normal for the season, except in the Arkona and Bornholm Basins where phosphate and Last updated: Apr 23, 2014

Arne Svensson Swedish Meteorological and Hydrological Institute Oceanographical Laboratory 2006-09-29 Dnr Mo-2005-215 CRUISE REPORT FROM R/V ARGOS Survey period 2006-09-25 - 2006-09-29 Survey area The Skagerrak, Kattegat, Sound, and Baltic Proper Principal SMHI Address Nya Varvet 31 SE-426 71 Last updated: Apr 23, 2014

Baltic Sea. The halocline was found between 10-20m and the thermocline at about 15m depths. At Fladen the thermocline was weak. Surface phosphate and nitrite nitrate concentrations in the Kattegat were normal for the season except at W. Landskrona in the Sound was phosphate concentrations were (0.23µmol Last updated: Apr 23, 2014