Rapid climate change in the ocean west of the Antarctic Peninsula during the second half of the 20th century
Rapid climate change in the ocean west of the Antarctic Peninsula during the second half of the 20th century
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DOI：
10.1029/2005gl024042
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发表时间：
2005-10-07
影响因子：
5.2
通讯作者：
King, JC
中科院分区：
文献类型：
--
作者：
Meredith, MP;King, JC
西南极半岛的气候是南半球变化最快的，自1951年以来，大气温度上升了近3摄氏度，并受到了相关的冰冻圈影响。我们在这里首次证明，邻近的海洋显示出深刻的同步变化，夏季表面温度上升超过1摄氏度，上层盐碱化强烈。这些变化最初是由大气变暖和海冰生成率下降驱动的，它们构成了积极的反馈，将大大促进气候的持续变化。这一区域的海洋物种对其环境极为敏感，海洋温度的微小上升预计会导致种群和物种的消失。WAP区域是南极磷虾的重要繁殖和育苗场，南极磷虾是南大洋食物网中的关键物种，已知依赖于物理环境。因此，观察到的变化具有重大的生态影响。
The climate of the Western Antarctic Peninsula (WAP) is the most rapidly changing in the Southern Hemisphere, with a rise in atmospheric temperature of nearly 3 degrees C since 1951 and associated cryospheric impacts. We demonstrate here, for the first time, that the adjacent ocean showed profound coincident changes, with surface summer temperatures rising more than 1 degrees C and a strong upper-layer salinification. Initially driven by atmospheric warming and reduced rates of sea ice production, these changes constitute positive feedbacks that will contribute significantly to the continued climate change. Marine species in this region have extreme sensitivities to their environment, with population and species removal predicted in response to very small increases in ocean temperature. The WAP region is an important breeding and nursery ground for Antarctic krill, a key species in the Southern Ocean foodweb with a known dependence on the physical environment. The changes observed thus have significant ecological implications.