Bachelor thesis, master thesis, state examinations and doctoral thesis in the research group atmospheric chemistry

Investigation of air pollutants in Cologne Cathedral

More information can be found here (german).

Hurricane Francis

Recorded by Mike Fincke on board the International Space Station ISS on August 27, 2004

Noctilucent clouds

Recorded by Mika Yrjölä in August 2003.
The picture shows bright noctilucent clouds over Lake Saimaa, Finland.