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Title: Increasing anthropogenic nitrogen in the North Pacific Ocean
Authors: Il-Nam Kim, Kitack Lee*, Nicolas Gruber, David M. Karl, John L. Bullister, Simon Yang, Tae-Wook Kim
Abstract:
The recent increase in anthropogenic emissions of reactive nitrogen from northeastern Asia and the subsequent enhanced deposition over the extensive regions of the North Pacific Ocean (NPO) have led to a detectable increase in the nitrate (N) concentration of the upper ocean. The rate of increase of excess N relative to phosphate (P) was found to be highest (∼0.24 micromoles per kilogram per year) in the vicinity of the Asian source continent, with rates decreasing eastward across the NPO, consistent with the magnitude and distribution of atmospheric nitrogen deposition. This anthropogenically driven increase in the N content of the upper NPO may enhance primary production in this N-limited region, potentially leading to a long-term change of the NPO from being N-limited to P-limited.
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우리 지구 환경 연구실 주도의 논문이 오늘자로 (2014.11.04) Science에서 채택 통보를 받았다.
(주저자: 김일남 박사, 교신저자: 이기택 교수님)
Title: "Increasing Anthropogenic Nitrogen in the North Pacific Ocean"
URL link: http://www.sciencemag.org/content/346/6213/1102.abstract
본 연구는 인간 활동에 의해 발생한 질소 오염물이 대기를 통해 북태평양 전 해역에 유입되고 있음을 처음으로 밝혀 내었다.
이 연구는 한국연구재단 Global Research Laboratory (GRL) 과제를 통해 포항공대 이기택 교수님 팀을 주도로 하여 한국해양연구원 (김태욱 박사), University of Hawaii (Prof. David Karl, USA), ETH (Prof. Nicolas Gruber, Switzerland), NOAA (Dr. John Bullister, USA) 등과 국내 및 국제 공동 연구를 통해서 성과를 이루어 내었다.
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