密码:
注册找密码我的浏览
设首页加收藏加书签 ______

首页每天学英语背单词语法词汇口语阅读写作翻译寓言四级六级名著绕口令笑话外语动态诗歌散文雅思商务

您所在的位置: 大耳朵首页 > 文章资料 > 英语新闻 > 国际新闻 > 正文

站内搜索:

小提示:学单词背单词请到大耳朵免费在线背单词系统
sprite/[sprait]/ n. 小妖, 小鬼, 妖精 ...

Arctic to be ice-free in summer in 20 years: scientist

本文属阅读资料


Two climate activists sunbathe on the edge of a frozen fjord in the Norwegian Arctic town of Longyearbyen, April 25, 2007.

LONDON, Oct 15(Reuters) - Global warming will leave the Arctic Ocean ice-free during the summer within 20 years, raising sea levels and harming wildlife such as seals and polar bears, a leading British polar scientist said on Thursday.

Peter Wadhams, professor of ocean physics at the University of Cambridge, said much of the melting will take place within a decade, although the winter ice will stay for hundreds of years.

The changes will mean the top of the Earth will appear blue rather than white when photographed from space and ships will have a new sea route north of Russia.

Scientists say evidence of melting Arctic ice is one of the clearest signs of global warming and it should send a warning to world leaders meeting in Copenhagen in December for U.N. talks on a new climate treaty.

"The data supports the new consensus view -- based on seasonal variation of ice extent and thickness, changes in temperatures, winds and especially ice composition -- that the Arctic will be ice-free in summer within about 20 years," Wadhams said in a statement. "Much of the decrease will be happening within 10 years."

Wadhams, one of the world's leading experts on sea ice cover in the North Pole region, compared ice thickness measurements taken by a Royal Navy submarine in 2007 with evidence gathered by the British explorer Pen Hadow earlier this year.

Hadow and his team on the Catlin Arctic Survey drilled 1,500 holes to gather evidence during a 280-mile walk across the Arctic. They found the average thickness of ice-floes was 1.8 meters, a depth considered too thin to survive the summer's ice melt.

Sometimes referred to as the Earth's air-conditioner, the Arctic Sea plays a vital role in the world's climate. As Arctic ice melts in summer, it exposes the darker-colored ocean water, which absorbs sunlight instead of reflecting it, accelerating the effect of global warming.

Dr Martin Sommerkorn, from the environmental charity WWF's Arctic program, which worked on the survey, said the predicted loss of ice could have wide-reaching affects around the world.

"The Arctic Sea ice holds a central position in our Earth's climate system. Take it out of the equation and we are left with a dramatically warmer world," he said.

"This could lead to flooding affecting one-quarter of the world's population, substantial increases in greenhouse gas emissions .... and extreme global weather changes."

Britain's Energy and Climate Change Secretary Ed Miliband said the research "sets out the stark realities of climate change."

"This further strengthens the case for an ambitious global deal in Copenhagen," he added.

(Editing by Jon Boyle)

您是否对这篇资料想说点什么?欢迎评论或者纠错,或者提交填空题答案! 您也可以立即
国际新闻
高瞻远瞩
放眼全球
推荐资源
最新社区精华帖子更多>>
  • 走遍美国教学版
    走遍美国教学版
  • 哈利学前班[英语儿歌]
    哈利学前班[英语儿歌]
  • 海绵宝宝 英文版
    海绵宝宝 英文版
  • 风中的女王第1季
    风中的女王第1季
经典学习方法更多>>
文章资料目录导航
经典名著 四六级考试 IELTS雅思 听说读写能力 在线语法词典 行业英语一 行业英语二 生活英语 轻松英语 专题英语
双城记 宝岛
战争与和平
悲惨的世界
傲慢与偏见
读圣经学英语
八十天环游地球
考试动态
学习资料
历年真题
模拟试题
心得技巧
学习方法经验
考试动态
考试介绍
考试辅导
历年真题
模拟试题
心得技巧
英语听力
英语口语
英语阅读
英语写作
英语翻译
英语词汇
名词 冠词数词
动词 动名词
代词 形容词
情态 独立主格
倒装 主谓一致
连词 虚拟语气
职场英语
外贸英语
商务英语
银行英语
文化英语
体育英语
房地产英语
会计英语
金融证券
医疗英语
计算机英语
公务员英语
实用英语
电话英语
旅游英语
购物英语
市民英语
宾馆英语
好文共赏
英语文库
名人演说
小说寓言
谚语名言绕口令
笑话幽默 诗歌
笨霖笔记
CNN英语魏
实用九句
双语阅读
发音讲解
分类词汇

免责声明:本站只提供资源播放平台,如果站内部分资源侵犯您的权益,请您告知,我们会立即处理。
Copyright © 2010-2017 大耳朵英语  京ICP备10010568号 | 京公网安备 11010802020324号

微信扫一扫手机学英语 关闭
微博扫一扫手机学英语 关闭
QQ扫一扫手机学英语 关闭
0.312954s