2020. 01 Visiting Shanghai Ocean University, Shanghai, China
2020. 02 Water sampling at Suyeong River, Busan
2020. 02 Ocean Sciences Meeting 2020 San Diego, USA
2020. 06 Water sampling at Pohang (with Prof. Hyunwoo Lee, Volcanology & Volatiles Research Group, Seoul National Univ.)
2020. 08 Water sampling at coastal area of Busan
2020. 11 Clean Lab improvement