Left side: Researchers of the Department of Chemistry and Biochemistry of the University of Bern are collecting air samples at Jungfraujoch for 14C measurements of atmospheric CH4. The picture shows Christophe Espic with a 100 l aluminium bag, into which the atmospheric air is pumped.
Right side: The picture shows Dr. Yang Yue of the Institute of Environmental Engineering of the ETH Zurich with a HighBioTrap sampler which collects PM2.5 (a particulate matter). Studying the biological fraction in airborne particulate matter at different altitudes can provide useful and valuable information about the diversity of bioaerosols.
Pictures: Ruedi Käser
Picture of the month in past years: