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Research Notes & Project & Ideas

The following lists contains active research questions in my personal research and that of my group members.

Research Levels


The projects range from applied research to pure research. I believe that it is important to have all levels of research active in a society and it is my key interest to link them, to use very pure research in applications and to let applications inspire very basic questions and research topics.


For this very reason I have not separated the projects into pure or applied - though the communities active in the different areas and their style to write, to argue and to publish are quite different.


A

no7original.jpgno7reconstruction.jpgz_no4_20150728t152030reconstruction.jpg
Original and reconstruction by direct sampling with volume Bessel potential inversion from a far field pattern of uniform sources located in the rectangle, here using 7 different frequencies (left), using four frequencies between wavenumber 1.5 and 2.5, one incident field only (right). This is work in progress.

B

C


Radar Data Assimilation based on an Ensemble Kalman Filter in a Convection Permitting Model with Rapid Update Cycle. We show the influence on the cycling frequency on the fractional skill score. Here, for the 4d-Version of the LETKF, lower update rates lead to better fractional skill skores after one hour of forecast.(left) Further, we compare latent heat nudging with full Volume Radar assimilation (right) - they were of comparable quality in these experiments. The experiments have been carried out by Bick et al.

D


ICON Global data assimilation model grid with NEST over Europe.