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제목   [15.12월] [PNAS] 국종성 교수 연구실 Amplified Arctic warming by phytoplankton under   이름  관리자
날짜  2015-12-14 13:46:23 조회  1025 추천  0
첨부   Parketal2015.pnas.pdf(1427.39KB)

Phytoplankton have attracted increasing attention in climate science due to their impacts on climate systems. A new generation of climate models can now provide estimates of future climate change, considering the biological feedbacks through the development of the coupled physicalecosystem model. Here we present the geo- physical impact of phytoplankton, which is often overlooked in future climate projections. A suite of future warming experiments using a fully coupled oceanatmosphere model that interacts with a marine ecosys- tem model reveals that the future phytoplankton change influenced by greenhouse warming can amplify Arctic surface warming considerably. The warming-induced sea ice melting and the corresponding increase in shortwave radiation penetrating into the ocean both result in a longer phytoplankton growing season in the Arctic. In turn, the in- crease in Arctic phytoplankton warms the ocean surface layer through direct biological heating, triggering additional positive feedbacks in the Arctic, and consequently intensifying the Arctic warming further. Our results establish the presence of marine phytoplankton as an important potential driver of the future Arctic climate changes. 

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