January 2012
Message 30

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[Met-jobs] PhD position on secondary organic aerosol formation, Forschungszentrum Jülich Germany

From "Kiendler-Scharr, Astrid" <>
To "" <>
Date Thu, 12 Jan 2012 21:13:26 +0100

Within the Helmholtz graduate school HITEC we are calling for applications for 
the following PhD project:

Secondary organic aerosol formation from biogenic VOCs: the influence of 
oxidants from anthropogenic emissions on aerosol formation

Aerosols and their direct and indirect climate effects currently pose the 
largest uncertainties in future projections of the climate. Up to 80% of the 
particulate mass is composed of organic species for which sources are to date 
insufficiently constraint. One question is, to what extent volatile organic 
compounds (VOC) from biogenic origin contribute to organic aerosol via 
secondary organic aerosol (SOA) formation. While experimental data on the 
oxidation by ozone and hydroxyl radicals is available, very little is known 
about the SOA formation from NO3 oxidation. NO3 mainly originates from 
anthropogenic sources such as traffic emissions.

In this project the SOA formation during the reaction of biogenic VOCs with NO3 
will be investigated in the unique atmospheric simulation chamber SAPHIR. 
Biogenic VOCs from direct emissions of plants will be used and the atmospheric 
chemical degradation will be explored at natural concentration levels. The 
successful candidate will design experiments, measure VOCs and particle 
formation by mass spectrometric techniques, and interpret results with chemical 
models. With its excellent experimental equipment and infrastructure IEK-8 
provides an ideal setting to significantly contribute to an improved 
understanding of organic aerosol.

Requirements: Master degree (or equivalent) in Chemistry, Physics, or 
Atmospheric Science; Very good experimental skills; experience in organic 
chemistry and/or mass spectrometry are helpful

For further information see:

Or contact:
PD Dr. Astrid Kiendler-Scharr

Please submit your electronic application to:

Forschungszentrum Juelich GmbH
52425 Juelich
Sitz der Gesellschaft: Juelich
Eingetragen im Handelsregister des Amtsgerichts Dueren Nr. HR B 3498
Vorsitzender des Aufsichtsrats: MinDir Dr. Karl Eugen Huthmacher
Geschaeftsfuehrung: Prof. Dr. Achim Bachem (Vorsitzender),
Karsten Beneke (stellv. Vorsitzender), Prof. Dr.-Ing. Harald Bolt,
Prof. Dr. Sebastian M. Schmidt

Kennen Sie schon unsere app?

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