But that is nothing to celebrate, because melting permafrost will release billions of tonnes of methane, an especially potent greenhouse gas.
但是这没有什么值得庆祝的，因为冻土融化将释放几十亿吨的甲烷，温室气体的重要组成部分。
In the large image, the area behind the shoreline is pockmarked by marshes, ponds, and hummocks characteristic of "thermokarst," landscapes created by the melting and refreezing of permafrost.
在大图中，海岸线后面的区域由湿地、池塘、热融冰丘形成了凹陷，融化的以及重新冻结的冻土层形成了这种景观。
Even the new figure could be an under-estimate, the team suggests, because it doesn't account for the full range of positive feedbacks, such as melting permafrost releasing methane and carbon dioxide.
研究小组指出，就连这个数字也可能估计不足，因为它没有解释正反馈的方方面面，比如释放出甲烷和二氧化碳正在融化的永久冻土层。
Other research shows that frozen methane (a potent greenhouse gas) may bubble up out of the melting Siberian permafrost in volumes that would raise global temperatures by several degrees.
其它研究显示，冻结的甲烷(一种强有力的温室气体)也许会从融化的西伯利亚永冻土中大量喷涌而出，将全球气温提高几度。
"These permafrost deposits are now melting and releasing their methane," said Maslin.
“这些永久冻土中的沉积物开始融化，并释放出甲烷，”麦斯林说。
Another tipping point sees massive amounts of methane - a potent greenhouse gas - released by melting Siberian permafrost, further boosting global warming.
西伯利亚永久冻土的融化将释放大量甲烷，形成一种强效温室效应并进一步推动全球变暖，另一个转折点到了。
Their growth will likely counterbalance some of the increased emissions from melting permafrost.
植物的生长或许可以在某些程度上平衡由于永久冻土融化而不断增加的碳排放。
While landslides can occur naturally, scientists say there is unmistakable evidence that Yamal's ancient permafrost is melting.
科学家表示，虽然山体滑坡会自然发生，但明确无误的证据表明，亚马尔古老的永久冻土层正在融化。
The analysis found that glaciers in every continent have been shrinking, permafrost is melting, the peak of river levels in spring is shifting, and lake and river temperatures are rising.
该分析发现，所有的大陆冰川已经在缩减，永久冻结带正在融化，春季水平面高度在改变，湖泊河流温度也在上升。
With global warming, the fall freeze comes later and more of the permafrost is melting in the southern Arctic.
随着全球变暖，秋冻延期，北极南部冻土融化。
Perhaps this is caused by the sudden melting of subsurface permafrost.
可能是地下永久冻土突然融化所造成。
Different explanations have been offered for these fluxes, including emissions from fires, wetlands, melting permafrost, and plants.
针对这些排放量变化有着不同的解释，包括来自燃烧物，湿地，融化的冻土和植物的排放。
In some instances, taxpayers are paying for these costs such as repairing highways that are damaged by melting permafrost.
在一些例子里，纳税人也在支付费用，比如被融化的永久冻土损害的高速公路的维修。
In some low-lying parts of the Arctic, the rising sea and storms are forcing whole villages to up sticks. Elsewhere melting permafrost is harming roads and runways.
在北极区一些地势低洼的地方，上涨的海平面和暴风雨迫使整个村庄向地势高的地方迁徙。
About half of the route is across permafrost, which poses particular challenges because of the danger of subsidence caused by melting at the surface in summer.
路线的大半是要穿过永冻土，由于存在夏季土层表面融化而导致的下沉危险，这便给运营带来了特殊的挑战。
Dr Lawrence and researchers at National Snow and ice Data Centre used computer models to analyse how the loss of sea ice could influence rising air temperatures and the melting of permafrost.
劳伦斯和美国国家冰雪数据中心的研究人员利用计算机模型分析了海冰的缩减对气温上升和永久冻结带融化的影响。
Dr Lawrence and researchers at National Snow and ice Data Centre used computer models to analyse how the loss of sea ice could influence rising air temperatures and the melting of permafrost.
劳伦斯和美国国家冰雪数据中心的研究人员利用计算机模型分析了海冰的缩减对气温上升和永久冻结带融化的影响。
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