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NTIS 바로가기바다 : 한국해양학회지 = The sea : the journal of the Korean society of oceanography, v.18 no.4, 2013년, pp.266 - 276
권은영 (서울대 해양 연구소) , 조양기 (서울대 지구환경과학부)
The ocean is the largest reservoir of carbon in the climate system. Atmospheric
핵심어 | 질문 | 논문에서 추출한 답변 |
---|---|---|
이산화탄소가 대기 및 바다에 미치는 영향은? | 과량의 이산화탄소는 대기, 해양, 육지에 분배되고 축적되어 왔다. 대기 중에 축적된 이산화탄소는 지구 온난화(global warming)와 기후 변화(climate change)의 직접적인 원인이 되고, 바다에 흡수된 이산화탄소는 해양 산성화(ocean acidification)를 유발시키며 생태계를 위협하고 있다. 인류 문명에 의해 변형되어 온 탄소 순환(carbon cycle)을 정확히 진단하고 미래의 변화를 예측하기 위해서는 탄소 순환의 기본을 알아야 한다. | |
바다의 대기와 접하는 혼합층에 산소 농도가 높은 이유는? | 바다 내부로의 산소 유입은 표층에서 일어나는 광합성(photosynethesis) 작용과 대기-해양 기체 교환(air-sea gas exchange)을 통해 이루어진다. 이로 인해, 대기와 접하는 혼합층(mixed layer)에서는 산소 농도가 높다. | |
전 지구 탄소 순환 변화를 일으키는 주요 요인은 무엇이며, 그 특징은? | 인류 문명에 의해 변형되어 온 탄소 순환(carbon cycle)을 정확히 진단하고 미래의 변화를 예측하기 위해서는 탄소 순환의 기본을 알아야 한다. 특히, 바다는 전 지구 시스템에서 암석 다음으로 가장 큰 탄소의 저장고에 해당하며, 수천년에서 수십 만년 사이의 시간 규모를 가지고 전 지구 탄소 순환 변화를 일으키는 주요 요인으로 알려져 있다(Sigman and Boyle, 2000). |
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