Abstract: Methods and systems for promoting precipitation from moisture-bearing atmospheric formations are described. A composition comprising a precipitation stimulating material and a volatile liquid agent is located on an aircraft and subject to one or more aircraft-generated pressures during aspersion. A first pressure is a pressure for expelling the composition from the aircraft. A second pressure results from combination between air and aircraft velocity. A third pressure is an ascending pressure resulting from expelling the composition from the aircraft at a lift portion location of the aircraft where only a lift force is applied to the aircraft during flight.