Abstract: The present invention provides an apparatus for weather modification. The apparatus comprises an emitter electrode, means for providing the emitter electrode with an electric charge, electrically coupled to the emitter electrode, an insulating support for supporting the emitter electrode at a predetermined height, and means for earthing the apparatus. The emitter electrode comprises a Malter film. According to another aspect of the present invention an apparatus for weather modification is provided, which comprises a lighter-than-air craft suitable for carrying an emitter electrode, means for providing the emitter electrode with an electric charge, electrically coupled to the emitter electrode, and means for earthing the apparatus. According to still a further aspect of the present invention, a method of increasing the amount of precipitation in a target region is provided.

Abstract: The invention concerns environmentally compatible methods and apparatuses for local modification of atmosphere, and in particular, for causing precipitation, dissipating fogs and/or clouds, removing air-pollutants in a target area. SUBSTANCE: the method involves applying air ionizers (1a, 1b, 1c) to generate ion flows into atmosphere to form convective flows and/or spatial charges. To control characteristics of the ion flow, it is proposed to use one or multiple air ionizers (1a, 1b, 1c) provided with variable-inclination electrode working cells. EFFECT: wide application of an air ionizer (1) with variable layout (inclination angle) of the electrodes in weather condition modification over a target area.

Abstract: The system uses a specifically modified spray assembly to spray electrically charged fluid below selected clouds so that an updraft carries the charged fluid into the cloud and induces precipitation. The size, charge, and design of the sprayers are specifically designed to elicit precipitation.