are we about to get an ice-free arctic? disturbing pictures by nasa show the polar cap is shrinking in mass by around 15% per decade

the arctic could be in summer ice-free as soon as 2030 rather than 2100.

可能在不久的2030年，而不是2100年，北极的夏季就会无冰。

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and the northwest passage in the arctic became ice-free for the first time in living memory.

在当今人们的记中，北极西北航道首次成为无冰航道。

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the researchers predict that if current conditions persist, the mountain could be ice-free as early as 2022.

研究人员预测如果当前的情况持续下去，该山峰的冰雪将最早于2022年消失殆尽。

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this is because we have a three northeast provinces of jilin city only a winter river ice free - the songhua river.

这是因为我们吉林市有一条东北三省唯一一条冬天不结冰的河流——松花江。

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a city of southeast hokkaido, japan, on the pacific ocean. it is the island's only ice-free trading port. population, 214, 545.

钏路日本北海道东南一城市，位于太平洋上。它是北海道唯一的不冻商业港。人口214,545

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that the warmer tunnel air kept ice-free.

因为那里通道的空气暖和些，地面上没有结冰。

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that's what makes it so difficult to predict exactly how rapidly we might see the arctic go ice-free.

这就是为什么我们很难准确预测最早什么时候能看到无冰的北极。

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jay zwally, a nasa scientist, recently suggested it could be virtually ice-free by late summer 2012.

最近，美国航空航天局科学家杰·齐瓦利提出，可能在2012年夏末之前，实际上就没有海冰了。

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we would set the planet on a course to the ice-free state, with sea level 75 metres higher.

地球上没有冰，海平面比现在的高出75米。

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ice-free sea absorbs more heat and accelerates global warming.

没有冰山的海洋将会吸收更多热量，并加速全球暖化。

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however, an ice-free arctic would also make the region more accessible to oil and gas exploration and shipping.

然而，另一方面，对于原油天然气探勘及航运事业而言，没了冰山挡路，要进入北极圈将会变得容易得多。

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the ice-free huangpu river is the main waterway in the shanghai area.

常年不结冰的黄浦江是上海主要的水路通道。

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the norwegian port of tromso and the russian port city of murmansk are ice-free year round even though they are in the arctic.

挪威的特罗姆瑟港口和俄罗斯的摩尔曼斯克港口城市常年都不会结冰，即使它们位于北极也是如此。

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the earth has ranged from a frigid snowball to a completely ice free planet.

地球范围从冷雪球，以一个完全免费冰星球。

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the wide bay could be a harbour, giving russia for the first time access to an ice-free sea.

那宽阔海湾可以成为海港，首次给俄国提供一条通向不冻海的航道。

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we would set the planet on a course to the ice-free state, with a sea level 75 meters higher.

我们将使地球踏上无冰状态的漫漫征程，海平面将升高75米。

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the city and the areas around it are an ice-free port and a nuclear-weapon-free zone.

那城市及其周围的地方是不冻港和无核区。

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manufactured goods from asia keep flowing into this natural ice-free harbors throughout the year.

整年都有来自亚洲的制成品源源不断的输送到这个天然不冻海港。

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the report also finds that the arctic ocean could become nearly ice-free in the summers within the next 30 to 40 years.

该报告还认为，北冰洋可能成为在未来30至40年近冰在夏季自由。

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in both images, gray indicates land, dark blue indicates ice-free ocean water, and white indicates ice concentrations.

在图中，灰色部分代表陆地，深蓝色部分代表没有结冰的海洋水域，而白色部分则表示结冰的程度。

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