[대기] 기상기후세미나 (염성수 교수, KIST)
일시 : 2026-04-16(목) 13:30 ~ 14:30
연사 : 염성수 교수
소속 : Climate and Environmental Research Institute, KIST
문의 : 김도연(doyeon.kim@snu.ac.kr)
장소 : 501동 1층 목암홀
Title: Introduction to the Korea Cloud Physics Experimental Chamber (K-CPEC) and the KIST dual-functional cloud chamber for aerosol-cloud interaction studies
[Abstract]
The K-CPEC is a comprehensive experimental facility built by the National Institute of Meteorological Science (NIMS) of Korea in 2022, which incorporates a cloud chamber, an aerosol chamber, a wind tunnel, and various subsidiary systems. This enables a wide range of experiments, such as the generation of diverse aerosols - including those from flare combustion - and their application in cloud formation studies. At its core lies the state-of-the-art cloud chamber, a double-structured, expansion-type chamber with dynamically adjustable wall temperature capability. It features an inner chamber with a volume of approximately 22 m³. The pressure of the inner chamber can be precisely controlled between 30 and 1013 hPa, while its temperature can range from -70°C to +60°C. These capabilities allow for the replication and investigation of a variety of cloud types and atmospheric conditions. Extensive preliminary experiments have demonstrated that K-CPEC effectively simulates known atmospheric phenomena such as cloud droplet activation and homogeneous/heterogeneous freezing that are critically dependent on input aerosol conditions. Some of the important results will be presented at the seminar.
Meanwhile, the Korea Institute of Science and Technology (KIST) is in the process of constructing a dual-functional cloud chamber that can be operated in expansion mode and/or in convection mode, depending on the purpose of the experiments. The KIST dual-functional cloud chamber also adopts a double cylindrical design as K-CPEC. The inner chamber is the actual cloud chamber with height of 2 m and diameter of 1.5 m and it is enclosed by the outer chamber of 3.5 m height and 2.5 m width. The temperature inside the inner chamber can be varied from-55°C to +40°C and the temperatures of wall, bottom and top surfaces will be controlled separately and dynamically for convection mode operation and to match the temperature change of the air inside the chamber. The bottom surface of the chamber can be made wet for convection mode operation. KIST aims to utilize the cloud chamber for fundamental aerosol-cloud interaction studies by mimicking adiabatically expanding cloud parcels under expansion mode operation and by mimicking sustained cloudy temperature and pressure conditions under convection mode operation. Specific details of the KIST cloud chamber design concept will be introduced at the seminar.
[Abstract]
The K-CPEC is a comprehensive experimental facility built by the National Institute of Meteorological Science (NIMS) of Korea in 2022, which incorporates a cloud chamber, an aerosol chamber, a wind tunnel, and various subsidiary systems. This enables a wide range of experiments, such as the generation of diverse aerosols - including those from flare combustion - and their application in cloud formation studies. At its core lies the state-of-the-art cloud chamber, a double-structured, expansion-type chamber with dynamically adjustable wall temperature capability. It features an inner chamber with a volume of approximately 22 m³. The pressure of the inner chamber can be precisely controlled between 30 and 1013 hPa, while its temperature can range from -70°C to +60°C. These capabilities allow for the replication and investigation of a variety of cloud types and atmospheric conditions. Extensive preliminary experiments have demonstrated that K-CPEC effectively simulates known atmospheric phenomena such as cloud droplet activation and homogeneous/heterogeneous freezing that are critically dependent on input aerosol conditions. Some of the important results will be presented at the seminar.
Meanwhile, the Korea Institute of Science and Technology (KIST) is in the process of constructing a dual-functional cloud chamber that can be operated in expansion mode and/or in convection mode, depending on the purpose of the experiments. The KIST dual-functional cloud chamber also adopts a double cylindrical design as K-CPEC. The inner chamber is the actual cloud chamber with height of 2 m and diameter of 1.5 m and it is enclosed by the outer chamber of 3.5 m height and 2.5 m width. The temperature inside the inner chamber can be varied from-55°C to +40°C and the temperatures of wall, bottom and top surfaces will be controlled separately and dynamically for convection mode operation and to match the temperature change of the air inside the chamber. The bottom surface of the chamber can be made wet for convection mode operation. KIST aims to utilize the cloud chamber for fundamental aerosol-cloud interaction studies by mimicking adiabatically expanding cloud parcels under expansion mode operation and by mimicking sustained cloudy temperature and pressure conditions under convection mode operation. Specific details of the KIST cloud chamber design concept will be introduced at the seminar.
첨부파일 (1개)
- Abstract_SNU seminar_ssyum.pdf (10 KB, download:23)
