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range for the season in the surface waters. Temperature had increased between 6–9 °C since the last cruise, and was noted at 15-18 °C. The sea surface salinity were within normal range, between 18,5–21,3 psu in the Kattegat and 15,0 psu in the Sound. At all sampling points, a pycnocline had formed Last updated: Jun 30, 2023

Å17 and Å16, where the highest levels were found. The Secchi depth varied between 6–7 meters. The oxygen conditions in Skagerrak's bottom water were good, with 5.9-6.2 ml/l at the open sea stations and 5.8 ml/l at Släggö. These were normal concentrations for the season at all stations. The Kattegat Last updated: Jul 03, 2023

During the expedition, which is part of the Swedish pelagic monitoring program, the Skagerrak, Kattegat, the Sound and the Baltic Sea were visited. In the Kattegat, the annual mapping of nutrients was also carried out. Despite bad weather during most of the expedition, 37 out of 41 planned stations Last updated: Feb 09, 2023

the previous expedition. At most stations the surface temperature was normal for the season. The salinity in the surface water of the Kattegat and the Skagerrak was normal for the season, but at several stations in the Baltic Proper sea surface salinity was slightly above normal. Concentrations of Last updated: Dec 08, 2022

Karin Wesslander Swedish Meteorological and Hydrological Institute Oceanographic Laboratory 2022-11-25 Dnr S/Gbg-2022-151 Address Sven Källfelts Gata 15 426 71 Västra Frölunda Telephone 011-495 80 00 E-mail karin.wesslander@smhi.se http //www.smhi.se/ Report from SMHI’s marine monitoring cruise Last updated: Dec 02, 2022

temperature was below normal. Satellite observations in the area showed upwelling earlier this week. Dissolved inorganic nitrogen (DIN) levels were low and showed values below reporting limit in the whole investigated area, considered normal for the season. The concentrations of phosphate and silicate was Last updated: Aug 01, 2022

A climatological atlas of the oxygen situation in the deep water of the Baltic Sea was first published in 2011 in SMHI Report Oceanography No 42. Since 2011, annual updates have been made as additional data have been reported to the ICES data center. In this report the results for 2017 has been Last updated: May 08, 2019

A climatological atlas of the oxygen situation in the deep water of the Baltic Sea was first published in 2011 in SMHI Report Oceanography No 42. Since 2011, annual updates have been made as additional data have been reported to the ICES data center. In this report the results for 2018 have been Last updated: Jun 17, 2020

A climatological atlas of the oxygen situation in the deep water of the Baltic Sea was first published in 2011 in SMHI Report Oceanography No 42. Since 2011, annual updates have been made as additional data have been reported to ICES. In this report the results for 2016 have been updated and the Last updated: May 29, 2018

During the cruise, which is part of the Swedish pelagic monitoring program, the Skagerrak, Kattegat, the Sound and the Baltic Proper were visited. The warming of the surface water had started in all the visited sea areas, but for natural reasons the temperature increase is somewhat slower in the Last updated: May 09, 2022