There is a broad range of environmental issues related to substances emitted to the atmosphere from anthropogenic and natural sources. The issues may concern long-term effects, like climate change, acidification or eutrophication, or be of a short-term nature like the effects of toxic species. Good Air Quality is an important target for a sustainable society.
The activities of the Air quality research unit at SMHI cover the modelling of atmospheric dispersion, chemical and physical transformations and the deposition of substances from global to local scales. A range of different models are developed and applied.
Air Quality modelling on different scales
Some contributions to the concentrations are caused by local emission sources, while other contributions are caused by long-range transportation. In our research we use and develop dispersion models on various spatial scales, suitable for different issues. More about our research:
Models are important tools for calculating the dispersion of air pollutants in the atmosphere. At SMHI we develop and apply a range of models on different geographical scales, custom-made for different issues. More information about our models:
Emissions of particles and black carbon and their impact on air quality
SMHI has, together with the Ministry of the Environment in Chile and the regional environmental authority of Rio Grande do Sul, Brazil, evaluated a rapid methodology to assess the emissions of particulate matter (PM) and black carbon (BC) from typical cities in southern Chile and Brazil.
Aerosol modelling - for increased health and improved climate simulations
A greater understanding of aerosol particles is important due to their potentially negative impact on human health and ecosystems, but they also play an important role in the global climate by their influence on Earth's radiation balance.
Air Quality and climate change
In a future climate the concentrations and depositions of air pollutants may change considerably - resulting in the elimination of our current view of emission reductions.
Exposure, health effects and external costs
Exposure to air pollution has a negative impact on human health, which brings about high external costs.