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Otto Hahn Medal for young aerosol researcher from Mainz

03.06.2014

Christopher Pöhlker from the Max Planck Institute for Chemistry is being awarded the Otto Hahn Medal for his outstanding research of the characteristics and sources of biogenic aerosol particles.

Pöhlker has proven that biogenic aerosols have a much greater influence on clouds and rain than previously assumed. Biogenic aerosols are tiny airborne particles that originate from plants, fungi, and bacteria.


Christopher Pöhlker

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Their effects on the climate and the environment are still largely unknown. For his pioneering research, the 30-year-old chemist will be awarded the Otto Hahn Medal at the General Meeting of the Max Planck Society on June 4, 2014.

The Max Planck Society awards the Otto Hahn Medal to young scientists every year to promote their research careers. This year the award, worth 7,500 euros, goes to Christopher Pöhlker for his outstanding academic work in connection with his doctoral thesis.

In the opinion of the jury, the thesis gives a new perspective on the role of aerosols in terms of their interactions with the atmosphere, the biosphere, and the global climate.

Pöhlker’s results show, for example, that plants and fungi have greater influence on the formation of clouds and the production of precipitation in the rainforest than previously thought. They release potassium-rich particles that trace gases accumulate on. These particles then serve as condensation nuclei for atmospheric moisture, forming clouds and producing rain.

The chemist did his research in the Amazonian rainforest and in a semi-arid woodland area in the US. He determined the concentration of bioparticles arising from fungal spores, pollen, and bacteria in the atmosphere and characterized their properties by using various methods such as fluorescence microscopy, fluorescence spectroscopy, X-ray microscopy, and X-ray absorption spectroscopy.

Christopher Pöhlker, who is currently on a research campaign in the Brazilian rainforest and is therefore not able to attend the award ceremony in person, studied chemistry at the Philipps-Universität in Marburg. During his studies, he spent some time at the department of organic chemistry at Stockholm University, Sweden.

Since October 2009 he has been active in the Biogeochemistry Department of the Max Planck Institute for Chemistry in Mainz with Meinrat O. Andreae and Ulrich Pöschl. In 2013 Pöhlker successfully completed his thesis, receiving the grade “summa cum laude”. His research has been published in the prestigious science magazine SCIENCE.

Weitere Informationen:

http://www.mpic.de/en/news/press-information/news/otto-hahn-medaille-fuer-jungen...

Dr. Susanne Benner | Max-Planck-Institut

Further reports about: Max-Planck-Institut Society X-ray atmosphere bacteria chemist clouds fluorescence fungi gases particles spectroscopy thesis woodland

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