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NTIS 바로가기한국대기환경학회지 = Journal of Korean Society for Atmospheric Environment, v.29 no.3, 2013년, pp.237 - 250
한지현 (고려대학교 지구환경과학과) , 방병조 (고려대학교 지구환경과학과) , 이미혜 (고려대학교 지구환경과학과) , 윤순창 (서울대학교 지구환경과학부) , 김상우 (서울대학교 지구환경과학부) , 장임석 (국립환경과학원 대기환경과) , 강경식 (제주대학교 해양과학부)
At Gosan ABC superstation in Jeju Island, we measured organic carbon (OC) and elemental carbon (EC) in
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핵심어 | 질문 | 논문에서 추출한 답변 |
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에어러졸은 기후변화에서 어떤 행동을 하는가? | 대기 중 부유하고 있는 에어러졸은 태양빛을 흡수, 반사하여 대기 복사에 영향을 주며, 구름응결핵으로 구름을 형성하는 등 기후변화에 중요한 물질로 알려져 있다 (Isaksen et al., 2009; Andreae et al. | |
OC와 EC의 선형 상관관계를 살펴본 결과는 어떠한가? | 이에 계절별로 OC와 EC의 선형 상관관계를 살펴보았다(그림 2). OC와 EC의 상관성이 클수록 배출원이 같을 가능성이 높다. 계절별 OC와 EC의 상관계수(γ)는 가을, 겨울, 봄, 초여름 순으로 각각 0.91, 0.93, 0.83, 0.61로 초여름에 가장 낮았다. 이는 다른 계절에 비해 여름철에 OC와 EC의 발생원이 서로 다르다는 것을 시사한다. 그리고 초여름에 y 절편이 컸는데 이는 EC 배출이 없을 때 존재하는 OC가 가장 많다는 것을 의미하므로 SOC가 여름철에 높은 비율로 존재할 가능성이 크다. 또한 상승한 기온과 함께 생물 활동의 증가에 기인한 생물학적 OC의 배출이 그 원인으로 작용할 가능성이 있다(Cao et al., 2007). 반대로 겨울철에 OC와 EC의 상관계수가 가장 높아 탄소성 에어로졸이 비교적 유사한 배출원을 가지며 SOC의 생성 역시 적었을 것으로 보인다. 겨울은 SO2와 NO2의 농도가 여름에 비해 2.8배, 1.7배 높았으며(표 2) 주 풍향은 북서풍으로 주로 베이징 인근 지역을 통과해 고산으로 빠르게(평균풍속 9.6 m/s) 유입되었다. Zheng et al.(2005)는 베이징 지역에서 난방용 석탄 사용량이 연간 총 석탄 소비의 약 23%를 차지하고 이로 인한 SO2 오염이 심각한 수준이라고 보고하였다. 고산에서 겨울철 OC 및 EC 그리고 SO2와의 상관계수(γ)는 각각 0.82, 0.77로 높았다. 따라서 이들의 배출원이 서로 유사함을 알 수 있다. | |
전체 에어러졸 중 탄소 성분이 차지하는 비율은 어느정도인가? | , 1992). 특히 전체 에어러졸 중 약 10%에서부터 많게는 40% 이상을 차지하는 탄소 성분의 경우(Monks et al., 2009; Andreae and Rosenfeld, 2008; Solomon et al. |
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