Current interests:
- Sulfate aerosols in the stratosphere
- Evolution and transport of sulfur in the stratosphere (aerosol microphysical processes)
- Understanding the micropysical processes after artificial and volcanic injections of sulfur into the stratosphere
- Impact of radiative heating of aerosols on stratospheric dynamics (QBO, meso-cyclone)
- Impact of volcanic eruptions and geoengineering on the climate
- DFG Forschergruppe VolImpact
- Model intercomparison GeoMIP, Member of GeoMIP steering committee, IsaMIP
- Numerical models: ECHAM5-HAM: global with aerosol microphysics, ICON-NWP: global non-hydrostaric, ICON-ART: adds aerosol microphysics to ICON, MPI-ESM: global ESM coupled to ocean
Former working interests:
- Global influence of traffic emissions (road, ship) on the Earth-System
- Simulation of atmospheric chemistry
- EU Project IMPLICC
- DFG special priority program on geoengineering
- Metras non-hydrostatic mesoscale model