AeroCom (initiatve)
to improve complex component aerosol modules in global model
involvement via project co-coordination and via data-preparation
http://dataipsl.ipsl.jussieu.fr/AEROCOM/
MACC (EU-project)
to make chemical weather forecast operational in the ECMWF environment
involvement via evaluation of forecast skill for aerosol optical properties
http://www.gmes-atmosphere.eu/news/new_aerosol
ACTRIS (EU-project)
to integrate ground obs. of aerosol, clouds and trace-gases in Europe
involvement via regular active and passive remote sensing at Hamburg
http://www.eusaar.net/actris.cfm
Aerosol-CCI (ESA climate-initiative)
to produce useful ESA satellite aerosol products for climate modeling
involvement via user requirements and product evaluation
GEWEX assessements (international collaboration)
involvement as team member for radiation, aerosol and clouds assessments