An ice island with an area of 100 square miles has broken off from one of Greenland's two main glaciers in what scientists say is the biggest such event in the Arctic in nearly 50 years.
一块面积达到100平方英里的浮冰岛已经从格陵兰两大冰川之一崩离，用科学家的话来说，这块浮冰岛的崩落是近50年北极同类事件中最大的一个。
This past winter's negative phase of the Arctic Oscillation transported old ice (four, five, and more years old) from an area north of the Canadian Archipelago.
去年冬天北极这种负向振荡从加拿大群岛北部地区运来多年老海冰(四，五年或更多年的老海冰)。
At the same time, warm Pacific Ocean water is pulsing through the Bering Strait into the Arctic basin, helping melt a large area of sea ice between Alaska and eastern Siberia.
同时，温暖的太平洋的海水正在漫过白令海峡涌向北冰洋流域，这使阿拉斯加和东西伯利亚间的海冰融化得更多。
For the past three years, the vast cap of shining-white ice covering the Arctic has melted away in summer to an area that would have been unbelievable just a decade ago.
过去三年内，在北极地区白皑皑冰盖已经在夏季大量地消减。
Arctic temperatures have increased at almost twice the global average rate in the last 100 years; 70,000 square kilometres of sea ice (an area about the size of Ireland) is disappearing annually.
北极的温度上升率在过去的100年中比全球温度的上升率高出了一倍，每年都有7万平方公里的冰海消失，而这一面积相当于整个爱尔兰的面积。
Arctic temperatures have increased at almost twice the global average rate in the last 100 years; 70, 000 square kilometres of sea ice (an area about the size of Ireland) is disappearing annually.
北极的温度上升率在过去的100年中比全球温度的上升率高出了一倍，每年都有7万平方公里的冰海消失，而这一面积相当于整个爱尔兰的面积。
Measures of Arctic sea ice this year show its area is the second lowest on record, and its volume is the lowest.
对北极海冰的检测表明，今年海冰面积下降到记录以来倒数第二，其体积则已经减少到有记录以来最小。
Of course, that's easier said than done; the Arctic is a forbidding, isolated area, short of people and encased in ice much of the year.
当然，这说起来容易，做起来难。北极是块离我们遥远的禁地，人烟稀少，一年中大部分时间是冰封雪盖。
The study, based on satellite measurements, is among the first to estimate the thickness of the Arctic ice, rather than just its surface area.
这项基于卫星测量的研究，首次将对北极冰盖厚度的评估作为研究对象，而不是像以往的研究一样，只是对冰盖的表面积进行研究。
In just one year, the Arctic Ocean has lost an area of year-round ice cover the size of Texas.
一年之内，北冰洋就将失去面积相当于德克萨斯州的冰川。
Arctic sea ice has retreated so much that in September 2007 it covered an all-time low area of 4.14m km sq, surpassing by 23% the previous all-time record set in September 2005.
2007年9月份北极的冰川覆盖面积降到了历史最低点即414万平方千米比2005年9月的前记录少了整整23%。
Recent research reveals that the area covered by Arctic sea ice is rapidly receding.
最近的研究表明北极海冰覆盖的面积正在迅速地减退。
It is evident positive relative between the Arctic sea ice and the polar vortex area, yet the relation between the polar vortex area and intensity is so complex.
北极海冰面积和北半球极涡面积为明显的正相关，而北半球极涡面积和极涡强度之间的关系就较为复杂。
Arctic ice reached a larger maximum area this winter than in the last few years, scientists say, but the long-term trend still shows it declining.
科学家们说，去年冬天北极冰层的最大面积比过去几年要大一些，但是长期趋势还是显示它在衰减。
The summer ice loss in the Arctic is now equal to an area the size of Alaska, Texas, and the state of Washington combined.
北极夏季冰川的融化现在等同于阿拉斯加，德克萨斯和华盛顿州相加的区域大小。
The summer ice loss in the Arctic is now equal to an area the size of Alaska, Texas, and the state of Washington combined.
北极夏季冰川的融化现在等同于阿拉斯加，德克萨斯和华盛顿州相加的区域大小。
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