ASIA-AQ 기간 보성 종합기상탑을 활용한 온실가스 측정

• Published in: 환경분석과 독성보건 Vol. 28; no. 2; pp. 82 - 91
• Main Authors: 정석한, Seokhan Jeong, 신대근, Daegeun Shin, 유희정, Hee-jung Yoo, 원덕진, Dukjin Won
• Format: Journal Article
• Language: Korean
• Published: 한국환경분석학회 30.06.2025
• Subjects: ASIA-AQ; CH 4; CO 2; GHGs; Tall tower measurement; 화학
• ISSN: 2672-0175; 2672-1139
• DOI: 10.36278/jeaht.28.2.82

In this study, a tall tower measurements system was established on the Boseong Tall Tower (BTT, 34.76˚N, 127.21˚E) to monitor greenhouse gases from long-range transport. The in situ measurement system uses a cavity ring-down spectroscopy (CRDS) analyzer, which continuously measures carbon dioxide (CO 2 ) and methane (CH 4 ) concentrations at 300 m above ground level. The system was tested during the ASIA-AQ campaign in Feb 2024. A 4-point calibration was performed for quality assurance (QA), with measurement accuracies of 0.25 ppm for CO 2 and 2.0 ppb for CH 4 . During the study period, the average CO 2 concentration was 435.98 ± 6.93 ppm, and the average CH 4 concentration was 2046.1 ± 24.8 ppb. When compared with the hourly data from domestic stations, the BTT time series data showed similar concentration levels, effectively representing the inflow and outflow of greenhouse gases across the Korean peninsula. However, high CO 2 concentrations were observed under specific wind directions, suggesting the need for further analysis of long-term changes in the CO 2 /CH 4 ratio.