[{"title":"Baltic Sea water column mercury profiles 2014\u20132016","summary":"Water column profiles of mercury (Hg) and methylmercury (MeHg). The dataset includes observations on Total Hg, Hg\u1d35\u1d35, Hg\u2070, MeHg and other chemical compounds and physical properties in the Baltic Sea and Kattegat. Data was collected during six cruises in the Baltic Sea - three in the southern Baltic Sea and Kattegat with SMHI onboard the R\/V Aranda (Sep 2014, July 2015, July 2016), three in the northern Baltic Sea with Ume\u00e5 Science Centre onboard the Swedish Coast Guard's ship Kustbevakning (Sep 2014, Aug 2015, Aug 2016). Data are from water samples collected during the cruises. The data provides a baseline for total Hg and speciated Hg in summer and early fall in the Baltic Sea.","citations":"Soerensen, A.L., A.T. Schartup, A. Skrobonja, S. Bouchet, D. Amouroux, V. Liem-Nguyen, E. Bj\u00f6rn (2018), Deciphering the role of water column redoxclines on methylmercury cycling using speciation modeling and observations from the Baltic Sea, Global Biogeochemical Cycles, doi: 10.1029\/2018GB005942\r\n\r\nSoerensen, A.L., A. Schartup, A. Skrobonja, E. Bj\u00f6rn (2017). Organic matter drives high interannual variability in methylmercury concentrations in a subarctic coastal sea, Environmental Pollution 229, 531-538, doi:10.1016\/j.envpol.2017.06.008\r\n\r\nSoerensen, A.L., A. Schartup, E. Gustafsson, B. G. Gustafsson, E. Undeman, E. Bj\u00f6rn (2016), Eutrophication increases phytoplankton methylmercury concentrations in a coastal sea \u2013 a Baltic Sea case study, Environmental Science and Technology 50(21), 11787-11796, doi:10.1021\/acs.est.6b02717","comments":"Methylmercury (MeHg) is a neurotoxin and the only mercury (Hg) species that biomagnifies in aquatic biota. Hg is classified as a contaminant of major health concern by WHO and is a leading toxin in the Baltic Sea food web. In the Baltic Sea monitoring efforts have focused on measuring total Hg concentrations. However, there is no direct relationship between total Hg load to the system and MeHg levels in biota. This disconnect suggests that other important processes control the variability of MeHg formation, bioaccumulation and biomagnification in the Baltic Sea. In this project we have used a combination of field work and laboratory and modelling studies to improve our understanding of the impact of eutrophication and climate change on mercury concentrations in the Baltic Sea water column and food web.\r\n\r\nAncillary data (all physical and chemical parameters other than mercury) are compiled from data available online at the Swedish Meteorological and Hydrological Institute.","category":"Marine","subcategory":"Marine chemistry","keywords":"Mercury; Methylmercury; Baltic Sea; Sub-Arctic","scientist":"Anne L. Soerensen","firstname":"Anne","lastname":"Soerensen","address":"Department of Environmental Science and Analytical Chemistry, Stockholm University","postalcode":"SE-106 91 ","city":"Stockholm","province":"","country":"Sweden","parameters":"Earth science > Oceans > Ocean chemistry","location":"Ocean > Atlantic Ocean > North Atlantic Ocean > Baltic Sea","progress":"Completed","language":"English","project":"Impacts of eutrophication and climate change on mercury cycling in the Baltic Sea.","publisher":"Bolin Centre for Climate Research, Stockholm University","version":"1.0","constrains":"None","access":"Free"}]