0
Cloud physics experiment chamber. / Courtesy of Korea Meteorological Administration

The National Institute of Meteorological Sciences (NIMS) is partnering with U.S. researchers to develop next-generation cloud seeding technology aimed at boosting rainfall through low-voltage electric fields.

The Korea Meteorological Administration (KMA) announced on August 12 that NIMS and a research team from the University of North Dakota are conducting joint empirical research through August 14 to advance electric field-based cloud seeding technology. Professor David Delene of the University of North Dakota visited NIMS to conduct world-first experiments and observations on cloud particle aggregation and ice crystal growth under electric field conditions.

In particular, this study marks the first empirical demonstration of the theory that electric fields can generate ice crystals even in low-voltage environments. While conventional theory held that such generation required high-voltage conditions, a new academic theory proposing the feasibility under low-voltage conditions emerged earlier this year.

Though observation had previously proven difficult, the KMA explained that progress became possible by linking a high-precision electric field generator developed in the U.S. with the meteorological agency's large-scale cloud physics experiment chamber. Developed using indigenous technology, South Korea's large-scale cloud physics experiment chamber is the nation's sole research facility capable of precisely replicating real atmospheric cloud conditions by adjusting temperature, pressure, and humidity.

Through this empirical study, the KMA plans to identify solutions to address the high costs and low efficiency associated with current cloud seeding methods. Kang Hyun-seok, Director of NIMS, stated, "Through this research, we will establish the scientific foundation for new cloud seeding technology and develop it into an international cooperation model that leads global meteorological innovation."

                                                                                                          Kim Hong-chan