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float was recovered in the Eastern Gotland Basin. Phytoplankton samples were analysed aboard during the expedition by phytoplankton expert Ann- Turi Skjevik, the results will eventually be published in the June Algaware report; https //www.smhi.se/en/publications/algal-situation-reports-2-1056, a Last updated: Jun 28, 2017

acute hypoxia (dissolved O2 < 2 ml/l) were found from the Bornholm Basin to the Eastern Gotland Basin starting at around 70-80 metres and below, in the Western Gotland Basin already at 60 metres. Silicate concentrations were higher or much higher than the season mean in all areas. Dissolved inorganic Last updated: May 29, 2017

during the SMHI cruise earlier in January. In the Kattegat area 12 stations were sampled with complete hydrography. The spring bloom had not started in the investigated area. Nutrients in the area showed concentrations normal for the season. Oxygen conditions in the bottom waters of the investigated Last updated: Mar 30, 2017

All nutrients in the surface water were generally normal for the season, except in the Baltic Proper where concentrations of silicate were higher or much higher than normal. The surface water temperature was normal for the season except in the Skagerrak where it was colder. The surface salinity was Last updated: Feb 23, 2017

degrees. During the ice season the map also shows the ice extent. Ice accretion warnings SMHI issues warnings for ice accretion if the ice growth on a vessel at sea is calculated to be more than 1 cm in 4 hours – usually in connection with gale and storm warnings. Ice accretion is classified as moderate Last updated: Feb 18, 2015

degrees. During the ice season the map also shows the ice extent. Ice accretion warnings SMHI issues warnings for ice accretion if the ice growth on a vessel at sea is calculated to be more than 1 cm in 4 hours – usually in connection with gale and storm warnings. Ice accretion is classified as moderate Last updated: Feb 17, 2015

for the season. The surface water temperature was lower than normal in the Western, Northern and Eastern Gotland Basin and the surface salinity was higher than normal in the Eastern Gotland Basin. In remaining areas normal salinities and temperatures were found. Last updated: Dec 16, 2016

report. Algaware http //www.smhi.se/oceanografi/oce_info_data/reports/alg/algsit16_7.pdf, SMHI produce daily algae maps from satellite. This can be found at http //www.smhi.se/vadret/hav-och-kust/algsituationen. Summary of the algae situation during the cruise Filamentous cyanobacteria were present as Last updated: Jul 29, 2016

The expedition was included within SLU:s International Bottom Trawl Survey and covered the Skagerrak and Kattegat. Mapping of winter nutrient conditions was performed in the Skagerrak and 13 stations with complete hydrography were sampled. In the Kattegat area 12 stations were sampled with complete …

Last updated: Mar 10, 2016

Anna-Kerstin Thell Sveriges Meteorologiska och Hydrologiska Institut Oceanografiska Laboratoriet 2018-03-28 Dnr S/Gbg-2018-15 Expeditionsrapport från U/F Dana Cruise report from R/V Dana Expeditionens varaktighet / period 2017-01-17 - 2017-01-30 Undersökningsområde / area Skagerrak och Kattegatt Last updated: Mar 28, 2018