Romeiser is involved in a number of projects dealing with the development, improvement, and use of algorithms for retrieving information on ocean currents, waves, and atmospheric features over the ocean from satellite radar images. This work requires a comprehensive understanding of the physics of radar imaging mechanisms, instrument designs, and the processing techniques used to generate radar images from raw data. Most of the work is done on powerful computers and involves the development and use of specific data processing algorithms in IDL or MATLAB. Some of the projects include field experiments with ship and aircraft operations. Due to the international collaboration in the fields of satellite measurements and ocean studies, Romeiser travels a lot to meetings and conferences all over the world. The students working with him participate in all of these activities.