ACES professor receives prestigious award

Professor Margareta Törnqvist received the Fritz Sobels Award for her lifetime accomplishment in the field of environmental mutagenesis during the 45th Annual meeting of the European Environmental Mutagenesis and Genomics Society (EEMGS) in Copenhagen, Denmark. Margareta Törnqvist’s work has focused on the development of advanced analytical methods, based on mass spectrometry, for the analysis of genotoxic compounds that form adducts …

New study reveals the origin of soot emissions that melt Himalayan glaciers

Northern India, China as well as nearby countryside were shown to be the origins of black soot that is largely responsible for the melting of glaciers in the Himalayan mountains of Tibet in a new study published in Nature Communications. Researchers from ACES and colleagues from the Chinese Academy of Sciences were able to determine not only the production sources of the …

Jón Egill Kristjánsson. Photo: Gudmund Dalsbø

Remembering Prof. Jón Egill Kristjánsson

It is with great sadness that we learned of the passing of Professor Jón Egill Kristjánsson, University of Oslo, who was killed in a climbing accident in the Norwegian mountains. Jón Egill was a very active, talented and internationally respected researcher and a good friend to many researchers here at ACES as well as the Bolin Centre for Climate Research. …

Thin mid-level clouds in the foreground with deep convective clouds in the background. Photo: Radovan Krejci

Thin tropical clouds cool the climate

Thin clouds at about 5 km altitude are more ubiquitous in the tropics than previously thought and they have a substantial cooling effect on climate. This is shown in a recent study by researchers from ACES and colleagues from Stockholm University and the University of Miami, which was published in Nature Communications. Mid-level clouds are currently missing in global climate models.  …

A little calcium with your sea spray?

Seawater droplets that are formed when waves break at the ocean surface, often referred to as sea spray aerosol, could potentially be important for climate. Quite how important their effects are depends a lot on what the sea spray aerosol droplets are made of. This was the focus of a recent study by researchers at ACES published in Geophysical Research …

New method for better assessment of endocrine-disrupting chemicals

Researchers at ACES participated in an international collaboration to develop a new method for the identification of endocrine-disrupting chemicals (EDC). The method was presented in an article published in the scientific journal Environmental Health. Among the high amount of chemicals used in the global market today are substances that can interfere with the body’s endocrine system, ultimately affecting human health …

Weathering of rocks by mosses may explain climate change during the Late Ordovician

During the Ordovician Period (485.4 and 443.8 million years ago), carbon dioxide (CO2) levels in the atmosphere were about eight times higher than today. Despite that, the Earth’s climate was cooled to cause an ice age, something that scientists have had difficulty explaining. A new study by researchers at ACES and colleagues in France, Germany and the UK, published in …

To the left: water flea (Daphnia magna) with visible plastic microbeads (green spots) in the gut. To the right: water flea that has ingested irregular plastic fragments, which, in contrast to microbeads, have formed clumps in the gut (red circle).

Impact of microplastics on marine animals more complex than previously thought

Effects of microplastics on aquatic organisms can vary depending on particle type and food availability shows a new study by researchers from ACES and colleagues from AquaBiota Research, Stockholm, published in journal PLOS One. Their results present a more complex picture of the effects of microplastics than previously thought. “Microplastics are tiny particles that are less than 5mm in size …

Airplanes make clouds brighter

Clouds may have a net warming or cooling effect on climate, depending on their thickness and altitude. Artificially formed clouds called contrails form due to aircraft effluent. In a cloudless sky, contrails are thought to have minimal effect on climate. But what happens when the sky is already cloudy? In a new study published in the journal Nature Communications, scientists …

World class research in environmental science at Stockholm University according to Shanghai Ranking

Today we learned that environmental science and engineering at Stockholm University was ranked 5th in the world by Shanghai Ranking global ranking of academic subjects. This outstanding placing, despite the limitations of this and other university ranking systems, is a clear indication of the world-class research in environmental science being done at Stockholm University. Our international standing in this field is …

Many unknown chemicals in the Baltic Sea

Nowadays, we use and produce more chemicals and in increasingly higher amounts. Many chemicals are later found in the marine environment, such as the Baltic Sea. But what and how much do we know about the chemicals present in the Baltic Sea? Researchers at ACES set out to answer this question in a new study published in the journal Environmental …

New research sheds light into our climate’s cloudier past

In two new papers published in Nature, researchers from ACES along with colleagues from Europe and the USA, imply that the baseline pristine pre-industrial climate may have been cloudier than presently thought. New results from the CLOUD experiment at CERN, Switzerland, shows that organic vapours emitted by trees produce abundant aerosol particles in the atmosphere in the absence of sulphuric acid. …

Contact information

Visiting addresses:

Geovetenskapens Hus,
Svante Arrhenius väg 8, Stockholm

Arrheniuslaboratoriet, Svante Arrhenius väg 16, Stockholm (Unit for Analytical and Toxicological Chemistry)

Mailing address:
Department of Environmental Science and Analytical Chemistry (ACES)
Stockholm University
106 91 Stockholm

Press enquiries should be directed to:

Stella Papadopoulou
Science Communicator
Phone +46 (0)8 674 7212
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