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The ongoing phenomenon of climate change is having an impact on marine ecosystems. Researchers from SMHI can show that there is now a greater occurrence of certain types of algal blooms than 40 years ago, and that new species of phytoplankton have become established. This has consequences not only …

As from April 2021, SMHI’s weather warnings will be designated as yellow warnings, orange warnings or red warnings, where a red warning is the most serious.

The expedition was included within SLU:s International Bottom Trawl Survey and covered the Skagerrak and the Kattegat.

Mapping of winter nutrient conditions was performed in the Skagerrak at 11 stations where complete hydrography were sampled, and 10 stations with only CTD. In the Kattegat area 14 …

Spring bloom was ongoing at Å17 in the open Skagerrak with high cell numbers of the diatom Skeletonema marinoi. Other cell numbers were surprisingly low considering the high chlorophyll concentrations. At Släggö the phytoplankton diversity was still low. Spring bloom was observed even in the …

Extensive work is being performed on a global scale – not least in Sweden – to meet the challenges presented by a changing climate. A new version of the Swedish Portal for Climate Change Adaptation has now been launched, featuring a new design and more content. The portal presents how Swedish …

The surface water, which had been warmer than normal during the autumn and winter, had now cooled down considerably, especially in the Skagerrak and the Kattegat. There the temperature varied between 0.6–3.4 degrees, at most stations there the temperature was below normal in the surface water. …

Surface temperatures in January were above normal in the Baltic Proper and varied from 3.4 in the Kattegat to 6.8 in the Baltic Proper. In the Sound, the Kattegat and the Skagerrak the pycnocline was located from 5-25 m, whereas the surface water was well mixed down to 40-70 m in the Baltic Sea.

Th …

SMHI Aqua is a new user-friendly web-based service for drinking water producers and water resource managers, which enables decision support for a sustainable water supply.