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Contact information to the SMHI Rossby Centre staff. 

The Arctic summer sea ice extent is decreasing since the start of satellte observations 1979. On top of that, long-term trend variability exists, including record low extents followed by partial recovery. The latest example is the 2007 rapid ice loss event.

The major differences between the Skagerrak and Kattegat areas during the latest cruise were the high cell numbers of the diatoms Pseudosolenia calcar-avis and Pseudo-nitzschia spp. in the Kattegat phytoplankton samples. The species’ were present in the Skagerrak as well but in low cell numbers. …

Surface water temperatures were normal in the whole area and nutrient levels were also normal expect from silicate which was lower than normal in parts of the Baltic Proper and in the Kattegat. Oxygen levels in the deep water of the Arkona Basin and Hanö Bight were good. In the Bornholm Basin the …

The Baltic Sea appears to be warming up faster than other world oceans, and climate change is altering its characteristics and circulation patterns.

The integrated (0-20 meters) chlorophyll a concentrations were low at all of the Skagerrak sampling sites, which is normal for the season. The species diversity was quite divers low at the Skagerrak stations but with low abundance of each species. Only a few species of diatoms were found and the …

During the mid April phytoplankton sampling the species diversity was very low at the Skagerrak stations. Whereas the total cell counts were the highest one month earlier at Å17, the situation was the opposite now with no diatoms. A few ciliates, small flagellates and dinoflagellates were present. …

The phytoplankton samples from the Skagerrak station Å17 had the highest diversity of the plankton stations in the Western Sea in mid-March. Diatoms were the most frequent and the diatom Leptocylindrus danicus the most numerous species. At Släggö and at the Kattegat stations the species diversity …

Extraordinarily high levels of chlorophyll a and high cell numbers were found in the Skagerrak and Kattegat areas in mid January. The diatoms Skeletonema costatum, Pseudo-nitzschia delicatissima-group and Thalassiosira nordenskioeldii dominated the phytoplankton samples. P. delicatissima-group was …