Marika Holland: So there’s been a lot of speculation from some scientists that we could have already passed a tipping point, or be close to a tipping point.

玛丽卡•霍兰德：一些科学家就此进行了种种推测，他们认为实际上海冰的消融已经达到了不可逆转的程度，或者与之非常接近。

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Marika Holland: I think it’s a strong suggestion that reducing emissions of greenhouse gases, fossil fuel burning can actually have an impact on Arctic sea ice cover, that not all hope is lost.

玛丽卡•霍兰德：我觉得这充分说明了，减少温室气体排放量和化石燃料燃烧确能阻止北冰洋海冰消融，我们仍然存有一线希望。

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Marika Holland: we're still on this path of decreasing sea ice cover, but if things were stabilized in terms of greenhouse gas concentrations, we might be able to stabilize the sea ice cover as well.

玛丽卡·霍兰德：目前海冰仍在日益消融，但假如温室气体排放量能够稳定下来，也许海冰的覆盖面也将维持稳定。

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"We've been seeing a retreat year after year, " said Marika Holland, an oceanographer with the National Center for Atmospheric Research in Boulder, Colorado.

CNN: Countries in tug-of-war over Arctic resources

"While the ice is disappearing faster than the computer models indicate, both observations and the models point in the same direction: the Arctic is losing ice at an increasingly rapid pace and the impact of greenhouse gases is growing, " said co-author Marika Holland of NCAR.

CNN: Arctic melt worse than predictions