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Sweden has been estimated using a newly developed methodology. The aviation emissions have been categorized by their emission altitude (LTO, low cruise and high cruise) and flight nationality (international, national and overflight). This aviation emission information was then used as input data to the Last updated: Sep 07, 2018

since the 1990s. Over the last 20 years, she has strategically built up and led SMHI’s Hydrology Research Unit, a multicultural group of around 30 researchers. Arheimer’s CV also includes a long list of scientific publications and significant involvement in several international organisations, such as Last updated: Oct 28, 2020

. The concentrations of phosphate and silicate were normal to above normal for the whole investigated area. Dissolved inorganic nitrogen (DIN) was normal or below normal on the Swedish west coast and above normal in the Baltic Proper. Oxygen levels in the Arkona- and Bornholm basins were normal or above Last updated: Feb 19, 2021

Hanö Bight and the Bornholm Basin, oxygen levels in the bottom water have continued to decline. In March they were above 2 ml/l, which is the limit for acute oxygen deficiency, and now in June at 0.4 ml/l. The inflow that occurred in November/December 2019 was still visible at the southeastern Baltic Last updated: Jun 15, 2020

from salty inflows The bottom waters in the deep basins are only aerated when there are large saltwater inflows. These occur randomly with an interval of one or several years, usually between November and January, although they can also occur during autumn and spring. These large saltwater inflows are Last updated: Sep 12, 2016

uptake differs between different varieties of plant. The conclusions regarding the link between UGI and air pollutants in Nordic cities contradict previous international studies, and more data is needed in order to investigate this. Continued research More research is needed on the interactions between Last updated: Dec 21, 2020

Scientific articles Atmospheric nitrogen deposition restricts future sub-arctic treeline advance in an individual-based dynamic vegetation model Arctic high-latitude ecosystem composition is undergoing change, mainly advancement of trees into tundra and increased abundance and size of shrubs. We Last updated: Mar 14, 2023

echos are weaker, they do not appear in the images, though the radar rnight have recorded them. That these clear air echos actually are echos from the air, as from sharp refractive index gradients, insects or birds, is evident since Doppler radars show that they move, generally approximately with the Last updated: Jun 03, 2019

. In the Gotland Basins acute hypoxia was found from about 70 meters depth. In the Arkona Basin the water column was well oxygenated. Concentrations of nutrients in the form of dissolved inorganic nitrogen, DIN, at the sea surface were on normal or below normal winter levels at all regular monitoring Last updated: Mar 05, 2019

high numbers at several stations. The integrated chlorophyll concentrations were normal at all stations for this month. The filamentous cyanobacterium Aphanizomenon flosaquae was abundant in the northern Baltic Proper and at REFM1V1 in the Kalmar sound. Filamentous cyanobacteria were absent or in very Last updated: Sep 10, 2021