1. Hannele's research since Hyytiälä
Now working at University of Kuopio, Finland
Global modelling of (marine) aerosols with GLOMAP (Univ. Leeds)
CCN seasonality in the Southern Ocean
geoengineering: controlled sea spray fluxes to increase albedo of low level marine clouds
changes in marine CCN sources due to climate change (wind speed, DMS)
Hoping to move to the continents (and SOA business) soon…

2. Marine CCN sources in Southern Ocean
Comparison to measurements
seasonal trend captured well
seasonality not predicted if DMS emissions neglected
CCN increase due to DMS from November to April (max 48% in Jan); no winter effect
South of 45o S
DMS effect only from December to February
seasonality also in run with DMS emissions
strong winds -> sea spray source
oxidation of LRT SO2 -> non-linearity of FT nucleation
Over 94% of DMS effect via FT nucleation (the rest via growth of sea spray to CCN size)