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The weather was dominated by weak to moderate winds that occasionally were strong. In the Baltic Sea and the Gulf of Bothnia normal concentrations of nutrients were found. In the Kattegat and the Skagerrak lower concentrations of nutrients than normal were observed. In the south-western part of Last updated: Apr 23, 2014

The sea surface temperature was between 2.9–6.5 ºC, coldest in the northern parts of the Baltic Proper and warmest in Skagerrak and Kattegat. The sea surface salinity was as highest 30.5 in the open Skagerrak and as lowest 6.8 in the Baltic Proper and the salinity was above normal at some stations Last updated: Apr 23, 2019

.4 ml/l and in the Arkona Basin the lowest measured value was 3.3 ml/l. Nutrients in the surface water varied, and both in the Baltic Proper and the western sea areas, concentrations ranged from below normal for the season to above normal. The silicate concentrations in the surface water were still Last updated: Mar 12, 2019

Bodil Thorstensson Lars Andersson Swedish Meteorological and Hydrological Institute Oceanographic Laboratory 2005-12-16 Dnr Mo-2005-271 CRUISE REPORT FROM R/V ARGOS Survey period 2005-12-04 - 2005-12-15 Survey area The Skagerrak, the Kattegat, the Sound, the Baltic Proper and the Gulf of Bothnia Last updated: Apr 23, 2014

.smhi.se/klimatdata/oceanografi/havsmiljodata (only available in Swedish). The Skagerrak The sea surface temperature was normal for the season at most of the stations, but above normal at Å13. Values measured were between 5.4-6.7°C. The surface salinity was about 33 psu, and this was normal for the season, except at Å13 where it was higher than Last updated: Mar 05, 2019

Bodil Thorstensson Swedish Meteorological and Hydrological Institute Oceanographic Laboratory 2010-12-08 Dnr M-2010-259 CRUISE REPORT FROM R/V ARGOS Survey period 2010-11-28 - 2010-12-08 Survey area The Skagerrak, Kattegat, Sound, Baltic Proper and the Gulf of Bothnia. Principal SMHI SUMMARY The Last updated: Apr 23, 2014

surface concentration of dissolved inorganic nitrogen (DIN) was normal for the season at most stations in the Baltic Proper. The sea surface temperature was normal for the season at almost all stations in the visited sea areas. The salinity in the sea surface water was above normal in both the Eastern and Last updated: Mar 06, 2019

The surface temperature was normal for the season and varied between 17-19 °C. Windy weather had mixed the warmer surface water in Skagerrak down to 60 meters and the thermocline was partly broken or deeper. The thermocline was observed at 15-20 meters in the rest of the area.   The nutrient Last updated: Aug 28, 2019

surface salinity showed typical values for the season. Temperature varied between 2.1 and 4.1oC. The salinity in the surface layer of the Bothnian Sea was about 5.5 psu, while it in the Bothnian Bay was ca. 3 psu. All nutrients showed normal values for this time of the year. Phosphate concentrations in Last updated: Apr 23, 2014

Annual report of the Swedish marine monitoring programme. Last updated: Sep 15, 2023