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

• GPS Slant Delay Operator - with Michael Bender et al.

• GPS Tomography Algorithms - with Michael Bender et al

• Particle Filter for Large Scale Problems in NWP - with Schraff, Rhodin, Reich

• SEVIRI infrared radiance assimilation for convective models - with Otkin, Perianez et al.

• Mathematical Analysis for Ensemble Kalman Filter Convergence Questions - with Perianez et al.

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• Data Assimilation in Neural Field and Neural Mass Models - with Ingo Bojak

• Radar data assimilation in convective models - with Theresa Bick et al.

• Kilometer Scale Ensemble Data Assimilation (KENDA) - with Schraff, Reich, Rhodin et al.

• Diagnostics for Ensemble Data Assimilation Systems - with Dora Föhring, Rhodin and Köpken-Watts

• Wind Power Assimilation OSSE - with Stefan Declair, Annika Schomburg et al.

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• Ensemble Data Assimilation for the ICON Model (IEDA) - with Ana Fernandez et al.

• Inverse Problems for Delay Neural Field Equations - with Jehan Alswailhi

• Orthogonality Sampling/ Direct Sampling and inverting the Bessel Volume Potential - RP

• Ensemble Methods for Inverse Scattering Problems - with Quaz Muhammad Zaigham Zia

• Photovoltaic Measurement Assimilation for Energy Applications - with Annika Schomburg et al.

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• Multiscale Data Assimilation - with Aamir Nadeem

• Model Approximations and Model Diagnostics in Data Assimilation Cycles - with Babatunde Odunuga

• Mathematica Analysis of Multistep Data Assimilation