US 12,259,521 B2
Method and system of analyzing ingredients of artificial rainfall for verification of cloud seeding effect
Hae Jung Koo, Seogwipo-si (KR); Ki Ho Chang, Seoul (KR); Joo Wan Cha, Seogwipo-si (KR); Hyunjun Hwang, Pyeongchang-gun (KR); Minhoo Kim, Pyeongchang-gun (KR); Woon Seon Jung, Seogwipo-si (KR); Jung Mo Ku, Seogwipo-si (KR); Ji Man Park, Seogwipo-si (KR); Miloslav Belorid, Seogwipo-si (KR); Sang Hee Chae, Seogwipo-si (KR); Ha-Young Yang, Siheung-si (KR); Chulkyu Lee, Seoul (KR); Ji Min Woo, Incheon (KR); Eun Hye Sim, Seoul (KR); Chang Hee Kang, Jeju-si (KR); and Jung Min Song, Jeju-si (KR)
Assigned to National Institute of Meteorological Sciences, Seogwipo-si (KR)
Filed by National Institute of Meteorological Sciences, Seogwipo-si (KR)
Filed on Feb. 28, 2022, as Appl. No. 17/682,828.
Claims priority of application No. 10-2021-0058024 (KR), filed on May 4, 2021.
Prior Publication US 2022/0357482 A1, Nov. 10, 2022
Int. Cl. G01W 1/14 (2006.01); A01G 15/00 (2006.01); G01N 33/18 (2006.01); G01W 1/06 (2006.01); G01W 1/10 (2006.01)
CPC G01W 1/14 (2013.01) [G01N 33/18 (2013.01); G01N 33/1813 (2013.01); G01W 1/06 (2013.01); A01G 15/00 (2013.01); G01W 1/10 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method for performing an artificial rainfall, comprising:
receiving weather information from a satellite, the weather information including, at least, temperature of clouds, a direction of the wind, and a speed of the wind;
selecting, by a central processing unit (CPU) of an operational system, a seeding material for seeding based on the weather information, wherein:
when the temperature of clouds is 0° C. or below at the seeding altitude, the CPU selects an icing nucleus matter as the seeding material, and the icing nucleus matter is seeded, and
when the temperature of clouds is more than 0° C. at the seeding altitude, the CPU selects a condensation nucleus matter as the seeding material and the condensation nucleus matter is seeded;
calculating, by the CPU, a scope in which the seeding material is diffused using the weather information, a kind of the seeding material, an amount of the seeding material, and a seeding altitude;
selecting, by the CPU, a first region and a second region by considering the direction of the wind and the speed of the wind, wherein the first region is an area expected to be affected by diffusion of the seeding material, and the second region is an area expected not to be affected by diffusion of the seeding material;
taking water samples from precipitation by water sampling instruments installed at specific points in the first region and the second region, the water samples being taken at regular time intervals before and after seeding, respectively;
extracting, by a water sample analyzer, reference ingredients included in the water samples, wherein the reference ingredients are selected based on the temperature of clouds such that when the temperature of clouds is 0° C. or below at the seeding altitude, an existence of a heavy metal component included in the icing nucleus matter and a change in mass of the heavy metal component before and after seeding are selected as the reference ingredients, and when the temperature of clouds is more than 0° C. at the seeding altitude, an existence of a water-soluble ion component included in a condensation nucleus matter and a change in mass of the water-soluble ion component before and after seeding are selected as the reference ingredients; and
verifying, by the CPU, an effect of the artificial rainfall based on the existence and the change in mass of the reference ingredients extracted from the water samples in each of the first region and the second region, and adjusting the kind of seeding material, the amount of the seeding material and the seeding altitude for next performance of the artificial rainfall based on verifying the effect of the artificial rainfall.