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Environmental Protection Agency and the Geological Survey of Sweden. Water management needs increasingly detailed informa- tion on water quality and water f lows for individual lakes and watercourses, known as water occurrences. To meet these needs the model calculations are being further devel- oped to Last updated: Apr 23, 2014

level. Many of these stations also measure surface water temperature. The first oceanographic measurements in Swedish waters were performed on the initiative of Gustav Ekman who in 1877 initiated a mapping of all Swedish seas with the warships HMS Alfhild and HMS Gustav af Klint. The data from this Last updated: Sep 15, 2023

these stations also measure surface water temperature. The first oceanographic measurements in Swedish waters were performed on the initiative of Gustav Ekman who in 1877 initiated a mapping of all Swedish seas with the warships HMS Alfhild and HMS Gustav af Klint. The data from this first mapping were Last updated: Sep 15, 2023

decreased from last month. Levels of dissolved inorganic nitrogen in the surface water were around the detection limit in all basins. The phosphate concentration was also low, which is normal this time of year, but in some places, it was above normal, such as in the Bornholm Basin and the Kattegat. The Last updated: Aug 28, 2023

The Climate Resilient Development for Africa (CRD4Africa) Inception Phase began in the beginning of 2023, which aims to map the needs for regional climate information in Africa together with local partners. To then possibly develop a program to provide high-resolution climate scenario data and Last updated: Apr 03, 2024

specific wind, weather, and sea level conditions cause the flow direction to reverse, allowing inflows to occur. These inflows, which are rare, can transport large amounts of oxygenated and highly saline water into the Baltic Sea. Due to the differing densities of low and high saline waters, stable Last updated: Aug 15, 2023

concentration of nutrients increases, at a depth of around 30 meters, concentrations slightly higher than the average for the season were measured at the Å stations. Abnormally high levels of ammonium were measured in the surface water of Å15, these values are under further review when this report is written Last updated: Oct 17, 2023

/l were found in the bottom water. Below this oxygen level, the first signs of oxygen deficiency in marine organisms are normally detected. In the south-eastern parts, levels were lower, close to the limit for acute hypoxia of < 2 ml/l. In acute oxygen deficiency, most benthic animals are negatively Last updated: Oct 09, 2023

bottom waters of the Baltic also reflected the oxygen deficiency, with values above normal, and levels that increased as the oxygen had been depleted in the water column. In the Arkona basin, the oxygen situation was somewhat better, with bottom water values between 2,33 – 3,33 ml/l. Surface Last updated: Aug 07, 2023

phytoplankton diversity was fairly high. At all other stations, the number of species and total cell numbers were generally low. The integrated chlorophyll concentrations (0–10 and 0–20 m) were within the normal range for this month at all stations in the Baltic Proper, except at BY1 where they were well above Last updated: Nov 23, 2023