PEGASOS is the FP7 project Pan‐European Gas‐Aerosol‐Climate Interaction Study. This project has the objective to study the dual role of man made air pollution as climate change agents and as air pollutants. Non‐linear interactions of anthropogenic emissions with chemical reaction pathways, biosphere‐ atmosphere exchanges, climate, and pollutant transport make predictions of how this complex system will respond to changes in anthropogenic sources very difficult. A change of a single component can lead to significant and non‐linear changes in others and the resulting feedbacks are critical to the behaviour of the system as a whole.

As part of the PEGASOS project a campaign is taking place in Cabauw between 14 and 26 May 2012 with an eye-catching 75 meter Zeppelin. The air ship is equipped with numerous air sampling instruments and is flying over the Cabauw Experimental Site for Atmospheric Research (CESAR) to measure chemical and physical properties of substances in the air. At the same time, ground based instruments, operated by CESAR partners are measuring the state of the atmosphere and chemical and physical properties close to the ground.

More information on the PEGASOS website and blog:
http://pegasos.iceht.forth.gr
http://eu-pegasos.blogspot.com