Research subject Climate dynamics and climate change

Interactions between aerosol particles and tropical convective clouds are a major source of uncertainty in the scientific understanding of climate change. AC3S will use new observational data and numerical models to address this challenge.

This project aims to use the Baltic Sea to test the hypothesis whether the sediment methane legacy pool, especially derived from the organic carbon legacy pool with large proportion of terrestrial organic carbon, will be a long-lasting source of methane (CH4) to the atmosphere from years to centuries.

The polar regions are especially sensitive for climate change and the warming the Arctic is more than twice as fast as elsewhere on Earth. The effects of this warming are large, with a dramatic loss of sea ice as an example.

The project ARTofMELT (Atmospheric rivers and the onset of sea ice melt 2023) centers on an international interdisciplinary research expedition onboard the Swedish research icebreaker Oden to the central Arctic Ocean in May and June 2023.

This research project is conducted within the CoastClim research group and brings together cutting-edge expertise in marine ecology, biogeochemistry and atmospheric physics to quantify the full spectrum of habitat-specific greenhouse gas fluxes and aerosol production in the Baltic coastal zone.

CRiceS - Climate Relevant interactions and feedbacks: the key role of sea ice and Snow in the polar and global climate system

Can polar clouds dampen global warming? The current consensus states that clouds enhance surface warming in polar regions but that their impact on the net energy budget at the top of the atmosphere, and thus global climate, is either small or cooling.

FORCeS - Constrained aerosol forcing for improved climate projections

The goal of the project FutureMares is to provide socially and economically viable actions and strategies in support of nature-based solutions for climate change adaptation and mitigation.

The project is part of the EU funded Marie Skłodowska-Curie Innovative Training Network (ITN) named iMIRACLI (innovative MachIne leaRning to constrain Aerosol-cloud CLimate Impacts) and examines how aerosols affect the Arctic mixed-phase clouds.

MOCCHA (Microbiology-Ocean-Cloud-Coupling – in the High Arctic) – ARCTIC OCEAN 2018 was an international and interdisciplinary research expedition to the central Arctic Ocean during the summer of 2018.

The Baltic Sea is highly influenced by the catchment areas, whith more complex pH dynamics than in the open ocean. This research project improves the temporal and spatial coverage of acidification monitoring, to broaden the understanding of current acidification trends and to improve the capacity to predict future changes.

Clouds in the tropics and midlatitudes contribute roughly equally to the global cloud feedback. However, there is still no accepted explanation for why midlatitude cloud feedback is positive or what mechanisms determine its magnitude.

The TRIACID project has mapped acidification trends in different regions of the Baltic Sea during the past 40 years. The project has described spatial variation and trends in pH status, and the main drivers of changing pH have been identified.

Previously proposed tipping-points that would lead to the tropical rain forest systems’ collapse involve positive feedback processes. Yet, the Amazon rain forest has persisted despite higher temperatures and carbon dioxide levels in the past.