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/l in the Bornholm Basin and 2.5 ml/l in the southern East Gotland Basin. In the rest of the Baltic Sea oxygen concentrations below 2 ml/l were observed at depths exceeding 70 to 80 metres. Hydrogen sulphide was found deeper than 90-100 metres in the Western Gotland Basin. At most stations in the Last updated: Apr 23, 2014

pycnocline. For more details see the separate phytoplankton report. The Baltic Proper The temperature in the surface water had increased since last expedition and was normal or somewhat above normal for the season and varied between 17.0 and 18.5°C. The eastern parts were somewhat warmer than the western Last updated: Oct 06, 2015

/l. All values normal for the season. At 15 m depth at station Å17, furthest west, a thin layer of water with extremely high nutrient concentrations was found, probably originating from the southern North Sea. Some plankton activity, based on fluorescence measurements, was recorded in the central regions Last updated: Oct 29, 2014

more detailed report describing observed algae can be found here http //www.smhi.se/oceanografi/oce_info_data/reports/havmiljoarkiv/oce_reportarchive12.html Last updated: Apr 23, 2014

-20 metres depth. The concentration of nutrients in the surface water was low or almost exhausted, which is normal for the season. The phosphate concentrations varied between 0.02-0.05 µmol/l and the inorganic nitrogen was below the reporting limit. Silicate also showed low concentrations around 0.6-0.9 µmol Last updated: Jul 29, 2015

The temperature of the surface water in the Skagerrak was some degree higher than normal. The nutrient concentrations were higher than normal in the Kattegat and the oxygen content of the bottom water was lower. Nutrient conditions and surface water temperatures were normal for the season in the Last updated: Apr 23, 2014

Nutrient conditions were normal for the season in all areas. Oxygen concentrations below 2 ml/l were found in the whole Baltic Proper at depths greater than 70 to 80 metres. Hydrogen sulphide was present in the Eastern and Western Gotland Basin at depths greater than 90 metres, in the Bornholm Last updated: Apr 23, 2014

Nutrient conditions were normal for the season in all areas. Oxygen concentrations below 2 ml/l were found in the whole Balic Proper at depths greater than 70 metres. Hydrogen sulphide was present in the eastern and western Gotland Basins at depths greater than 125 metres, in the Hanö Bight from 70 Last updated: Apr 23, 2014

the season. At W Landskrona the corresponding concentrations were 0.5 and 0.25 µmol/l respectively, which is below average. The silicate concentration in the Kattegat was 4.5 µmol/l and in the Sound 8.7 µmol/l. Baltic Sea The surface water temperature varied between 7.3 and 9.6ºC, the lowest being Last updated: Apr 23, 2014

. This report is based on preliminary data. Nutrient concentrations were normal for the season in all areas. At the coastal station Släggö, in the Skagerrak, the bottom water oxygen concentration was less than 2 ml/l. This was worse than normal. From 70-90 metres in the Bornholm Deep (BY 5), the Last updated: Apr 23, 2014