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Multi-scale model analysis of Arctic surface-atmosphere exchange of climate-active trace gases

  • 26 April, 2024
  • 11:00
  • Wageningen University, Meteorology and Air Quality
  • prof.dr. M.C. Krol
  • dr.ir. L.N. Ganzevelddr.ir. G.J. Steeneveld

Arctic climate change and the resulting decrease in sea ice cover is expected to result in significant changes in Arctic the surface-atmosphere exchange of greenhouse gases (carbon dioxide, methane, ozone). This can further modify Arctic climate following a cascade of complex interactions and feedback mechanisms. This thesis introduces a comprehensive approach, using novel observations and state-of-the-art modelling techniques, to advance understanding of local and large–scale processes controlling trace gases in the Arctic atmosphere. A hierarchy of coupled meteorological-chemical modelling systems allows for upscaling of observed and simulated conditions at the measurement scale (~10-1000 m) to the representative footprint of airborne observations (~1-10 km) and the grid resolution of global-scale chemistry-climate models (>100 km) to assess the impact of Arctic climate change. This thesis focuses on, but does not limit itself to, further development, evaluation and application of process-based representations of surface exchange processes of climate-active trace gases in models.

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Sjoerd Barten

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