Abstract: Method for determining combined data of weather radars (1) in an overlap region (2) of the observation regions of at least two weather radars (1), with polarimetric weather radars (1) being used as weather radars (1), and the measurements of the individual at least two polarimetric weather radars (1) being combined for measuring points in the overlap region (2), and the combined measuring points being used to carry out a radar echo classification.

Abstract: The invention relates to a method, an apparatus and a computer program product for correcting the weather data of radial speed, spectral width and/or differential reflectivity which have been acquired from radar echo data recorded by a ground-based, radar-based remote-sensing appliance (1) for measuring atmospheric conditions and including evaluable weather echoes and interfering ground echoes, corrected weather data being obtained by calculating out the interfering ground echoes from the acquired weather data by using a previously stored clutter map with an intensity distribution of radar echo data which include the ground echoes substantially without weather echoes.

Abstract: Method for determining combined data of weather radars (1) in an overlap region (2) of the observation regions of at least two weather radars (1), with polarimetric weather radars (1) being used as weather radars (1), and the measurements of the individual at least two polarimetric weather radars (1) being combined for measuring points in the overlap region (2), and the combined measuring points being used to carry out a radar echo classification.