Abstract: A method of determining a cloud base through meteorological observation of an atmospheric research aircraft is provided. The method may include collecting meteorological observation information by performing meteorological observation while the atmospheric research aircraft changes a flight altitude, determining a flight altitude that satisfies a plurality of conditions by using the collected meteorological observation information, and determining the determined flight altitude to be a cloud base height. The plurality of conditions may include a first condition in which a liquid water content (LWC) is greater than a first threshold, a second condition in which relative humidity increases or decreases, and a third condition in which a cloud droplet number concentration is greater than a second threshold.

Abstract: Provided are a method and system of verifying an increase in precipitation. The precipitation increase verification method includes: obtaining a first piece of observation information from an upwind area after a seeding experiment; obtaining a second piece of observation information from a downwind area; comparing the first piece of observation information with the second piece of observation information, and thus determining whether or not the first piece of observation information and the second piece of observation information fall within a linear scope; and determining that an effect resulting from the seeding experiment can be proved when the first piece of observation information and the second piece of observation information fall within the linear scope.

Abstract: Provided is a method for analyzing an effect of a hygroscopic seeding material sprayed through an airborne cloud seeding experiment on ground aerosol concentrations, including the steps of: inputting information of meteorological fields and seeding spraying of the airborne cloud seeding experiment to a numerical cloud seeding model to execute a numerical simulation; calculating a mass concentration of the hygroscopic seeding material on ground, based on results of the numerical simulation; and calculating a contribution degree of the hygroscopic seeding material to mass concentrations of aerosols, based on comparison between the calculated mass concentration of the hygroscopic seeding material and the mass concentrations of the aerosols observed on an execution date of the airborne cloud seeding experiment.

Abstract: Provided are a method and system of analyzing ingredients of an artificial rainfall for verification of a cloud seeding effect. As the method and system, which can verify an effect of the artificial rainfall in such a manner that a seeding material becomes different according to each temperature of clouds at a seeding altitude, water sampling from precipitation is performed before and after seeding, and thus the ingredients of a water sample are analyzed using each of a method of analyzing a heavy metal component and a method of analyzing a water-soluble ion component according to a cool cloud and a warm cloud so that whether or not there is a change in each concentration of the ingredients can be determined, are provided, an experiment for the artificial rainfall can more effectively be performed.