(1) The mean state of the atmosphere in tropical channel simulations (2) Which regional cloud changes are most important for the global warming response of the midlatitude jet streams?

This talk will provide an overview on long-term measurements of Arctic aerosol properties. Observations will be discussed in light of a “changing Arctic aerosol baseline” as a result of anthropogenic emission changes as well as Arctic climate change. Interpretation depends strongly on process understanding, where intensive measurement campaigns can provide more detailed information. Recent and preliminary results from the Arctic Ocean 2018 and MOSAiC 2019-2020 efforts will be shown.

   

tbd