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.
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.
Dr. Susanne Benner | Max-Planck-Institut
Eduard Arzt receives highest award from German Materials Society
21.09.2017 | INM - Leibniz-Institut für Neue Materialien gGmbH
Six German-Russian Research Groups Receive Three Years of Funding
12.09.2017 | Hermann von Helmholtz-Gemeinschaft Deutscher Forschungszentren
Our brains house extremely complex neuronal circuits, whose detailed structures are still largely unknown. This is especially true for the so-called cerebral cortex of mammals, where among other things vision, thoughts or spatial orientation are being computed. Here the rules by which nerve cells are connected to each other are only partly understood. A team of scientists around Moritz Helmstaedter at the Frankfiurt Max Planck Institute for Brain Research and Helene Schmidt (Humboldt University in Berlin) have now discovered a surprisingly precise nerve cell connectivity pattern in the part of the cerebral cortex that is responsible for orienting the individual animal or human in space.
The researchers report online in Nature (Schmidt et al., 2017. Axonal synapse sorting in medial entorhinal cortex, DOI: 10.1038/nature24005) that synapses in...
Whispering gallery mode (WGM) resonators are used to make tiny micro-lasers, sensors, switches, routers and other devices. These tiny structures rely on a...
Using ultrafast flashes of laser and x-ray radiation, scientists at the Max Planck Institute of Quantum Optics (Garching, Germany) took snapshots of the briefest electron motion inside a solid material to date. The electron motion lasted only 750 billionths of the billionth of a second before it fainted, setting a new record of human capability to capture ultrafast processes inside solids!
When x-rays shine onto solid materials or large molecules, an electron is pushed away from its original place near the nucleus of the atom, leaving a hole...
For the first time, physicists have successfully imaged spiral magnetic ordering in a multiferroic material. These materials are considered highly promising candidates for future data storage media. The researchers were able to prove their findings using unique quantum sensors that were developed at Basel University and that can analyze electromagnetic fields on the nanometer scale. The results – obtained by scientists from the University of Basel’s Department of Physics, the Swiss Nanoscience Institute, the University of Montpellier and several laboratories from University Paris-Saclay – were recently published in the journal Nature.
Multiferroics are materials that simultaneously react to electric and magnetic fields. These two properties are rarely found together, and their combined...
MBM ScienceBridge GmbH successfully negotiated a license agreement between University Medical Center Göttingen (UMG) and the biotech company Tissue Systems Holding GmbH about commercial use of a multi-well tissue plate for automated and reliable tissue engineering & drug testing.
MBM ScienceBridge GmbH successfully negotiated a license agreement between University Medical Center Göttingen (UMG) and the biotech company Tissue Systems...
19.09.2017 | Event News
12.09.2017 | Event News
06.09.2017 | Event News
21.09.2017 | Physics and Astronomy
21.09.2017 | Life Sciences
21.09.2017 | Health and Medicine