Sulfate, soot and climate

Annica Ekman, Stockholm University

Presentation: Annica Ekman.pdf 

Emissions of aerosol particles and their precursors have drastically changed over time; they have increased due to fossil fuel burning during periods of strong economic growth and decreased as regulations have been put in place to abate air pollution.

A striking example is the strong increase in sulfur dioxide emissions over Europe and North America that took place from the start of industrialization until the 1980’s when the Convention on Long-Range Transboundary Air Pollution was signed and enforced to address the issue of acid rain

How did these rapid spatial and temporal changes in emissions affect regional and global climate? Did concurrent changes in soot emissions play any role?

To address these questions, results from coupled ocean-atmosphere climate simulations with interactive aerosol microphysics will be presented and discussed.

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