Articles | Volume 18, issue 15
https://doi.org/10.5194/amt-18-3781-2025
https://doi.org/10.5194/amt-18-3781-2025
Research article
 | 
12 Aug 2025
Research article |  | 12 Aug 2025

Analysis of hygroscopic cloud seeding materials using the Korea Cloud Physics Experimental Chamber (K-CPEC): a case study for powder-type sodium chloride and calcium chloride

Bu-Yo Kim, Miloslav Belorid, Joo Wan Cha, Youngmi Kim, and Seungbum Kim

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Cited articles

Bruintjes, R. T.: A review of cloud seeding experiments to enhance precipitation and some new prospects, Bull. Am. Meteorol. Soc., 80, 805–820, https://doi.org/10.1175/1520-0477(1999)080<0805:AROCSE>2.0.CO;2, 1999. 
Buck Research Instruments: Model 1011C hygrometer operating manual, Buck Research Instruments, https://www.hygrometers.com/wp-content/uploads/1011C-users-manual-2009-12.pdf (last access: 12 April 2025), 2009.​​​​​​​ 
Cha, J. W., Jung, W., Chae, S., Ko, A., Ro, Y., Chang, K. H., Ha, J. C., Park, D. O., Hwang, H. J., Kim, M. H., Kim, K. E., and Ku, J. M.: Analysis of results and techniques about precipitation enhancement by aircraft seeding in Korea, Atmosphere, 29, 481–499, https://doi.org/10.14191/Atmos.2019.29.4.481, 2019. 
Cha, J. W., Kim, B. Y., Belorid, M., Ro, Y., Ko, A. R., Kim, S. H., Park, D. H., Park, J. M., Koo, H. J., Chang, K. H., Lee, Y. H., and Kim, S.: Study on weather modification hybrid rocket experimental design and application, Atmosphere, 34, 203–216, https://doi.org/10.14191/Atmos.2024.34.2.203, 2024a. 
Cha, J. W., Kim, Y., Belorid, M., Kim, B. Y., Baek, J., Kim, S., Lee, K., Cho, C., and Lee, S.: Development of Korea's First Large Scale Advanced Cloud Physics Experimental Chamber (I): Design of the Cloud Physics Experimental Chamber System and Detailed Structural Analysis of the Cloud Chamber, J. Environ. Sci. Int., 33, 957–975, https://doi.org/10.5322/JESI.2024.33.12.957, 2024b. 
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Short summary
This study analyzed NaCl and CaCl2 powder-type hygroscopic materials for cloud seeding, using the Korea Cloud Physics Experimental Chamber (K-CPEC) in South Korea. The aerosol chamber enabled particle analysis in an extremely dry environment, while the cloud chamber, with precise pressure and temperature control, facilitated droplet growth through quasi-adiabatic expansion. Our study provides valuable insights for the development of new seeding materials and advanced cloud seeding experiments.
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