인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Abstract Methanesulfonic acid, a key oxidation product of dimethyl sulfide, plays a crucial role in the atmospheric sulfur cycle and is an important contributor to aerosol growth and cloud condensation nuclei formation in remote marine and polar atmospheres. Its role is particularly significant in the Southern Ocean, where particle concentrations are low and biogenic sulfur emissions help shape cloud properties. Here, we focus on an eight-day period during the austral summer along coastal East Antarctica marked by elevated gaseous MSA that coincided with persistent katabatic outflow. By combining our ship-based observations, back-trajectory analysis and thermodynamic modelling, we show that this outflow brings biogenically dominated, highly acidic aerosols with elevated gaseous methanesulfonic acid produced by evaporation from aerosol particles. Although a decrease in relative humidity can enhance this process, aerosol acidity is identified as the primary driver. Our findings highlight the strongly acidic nature of Southern Ocean aerosol and provide new insights into processes involved in the marine sulfur cycle. Acidity-driven MSA evaporation should be considered when using dimethyl sulfide oxidation products to evaluate and improve atmospheric chemistry and climate models.
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.