原文網址:http://www.sciencemag.org/news/2017/05/methane-slowing-global-warming-arctic
Are methane seeps in the Arctic slowing
global warming?
北極的甲烷冷泉能減緩全球暖化?
Good news about climate change is
especially rare in the Arctic. But now comes news that increases in one
greenhouse gas—methane—lead to the dramatic decline of another. Research off
the coast of Norway’s Svalbard archipelago suggests that where methane gas
bubbles up from seafloor seeps, surface waters directly above absorb twice as
much carbon dioxide (CO2) as surrounding waters. The findings
suggest that—in isolated spots in the Arctic—methane seeps in isolated spots in
the Arctic could lessen the impact of climate change.
在北極,跟氣候變遷有關的好消息總是特別稀少。但現在有則新聞指出一種溫室氣體――甲烷的增加會導致另一種溫室氣體的含量劇烈降低。在挪威斯瓦巴群島外海進行的研究指出,從海底冷泉(seep)產生的甲烷氣泡冒出海面之處,表層海水吸收的二氧化碳量是周遭海水的兩倍。這項發現顯示在北極零散分布的甲烷冷泉,能減輕氣候變遷帶來的衝擊。