Andreas is a postdoctoral researcher at the University of Bremen's Center for Marine Environmental Science and Institute of Environmental Physics, in the Laboratory for Modeling and Observation of the Earth System and the DOAS group.

A mathematician by training, Andreas moved to the field of atmospheric science. During his PhD work and the years thereafter, his main focus lay on the improvement and further development of the retrieval of atmospheric trace gases, mostly tropospheric NO2, in the ultraviolet and visible spectral regions. At the newly founded Laboratory for Modeling and Observation of the Earth System, Andreas is now expanding his expertise into the field of atmospheric chemistry modeling and managing the group's HPC resources.

During his PhD thesis with the title Tropospheric nitrogen dioxide from satellite measurements: SCIAMACHY limb/nadir matching and multi-instrument trend analysis, Andreas delevoped an algorithm combining measurements taken by the SCIAMACHY instrument in limb and nadir geometries to yield tropospheric NO2 abundances. In the second part of his thesis, Andreas analyzed the temporal evolution of tropospheric NO2 measurements from four satellite instruments, explicitly accounting for differences between the instruments, with a focus on large urban agglomerations.

Andreas is an avid advocate of open source software in general and the Python programming language in particular. He is an occasional contributor to several open source projects, mostly the excellent SciPy library.

Andreas's curriculum vitae is available for download.