专家:寒潮和全球变暖不矛盾
文章来源:未知 文章作者:meng 发布时间:2010-01-16 01:37 字体: [ ]  进入论坛
(单词翻译:双击或拖选)

Beijing had its coldest morning in almost 40 years and its biggest snowfall since 1951. Britain is suffering through its longest cold snap since 1981. And freezing weather is gripping the Deep South, including Florida's orange groves1 and beaches.

北京遭遇了近40年来最寒冷的清晨和1951年以来最大的降雪;英国正遭遇自1981年来持续时间最长的寒潮;美国包括佛罗里达的橘园和海滩在内的南部地区也未逃过严寒袭击。

An undated file photo shows a man skis. Beijing had its coldest morning in almost 40 years and its biggest snowfall since 1951. Britain is suffering through its longest cold snap since 1981. And freezing weather is gripping the Deep South, including Florida
An undated file photo shows a man skis. Beijing had its coldest morning in almost 40 years and its biggest snowfall since 1951. Britain is suffering through its longest cold snap since 1981. And freezing weather is gripping the Deep South, including Florida's orange groves and beaches. Whatever happened to global warming?

Whatever happened to global warming?

Such weather doesn't seem to fit with warnings from scientists that the Earth is warming because of greenhouse gases. But experts say the cold snap寒流,寒潮 doesn't disprove global warming at all - it's just a blip标志 in the long-term heating trend.

"It's part of natural variability," said Gerald Meehl, a senior scientist at the National Center for Atmospheric2 Research in Boulder3, Colo. With global warming, he said, "we'll still have record cold temperatures. We'll just have fewer of them."

Deke Arndt of the National Climatic Data Center in Asheville, N.C., noted4 that 2009 will rank among the 10 warmest years for Earth since 1880.

Scientists say man-made climate change does have the potential to cause more frequent and more severe weather extremes, such as heat waves, storms, floods, droughts and even cold spells春寒期. But experts did not connect the current frigid寒冷的,严寒的 blast to climate change.

So what is going on?

"We basically have seen just a big outbreak of Arctic air" over populated areas of the Northern Hemisphere, Arndt said. "The Arctic air has really turned itself loose on us."

In the atmosphere, large rivers of air travel roughly west to east around the globe between the Arctic and the tropics. This air flow acts like a fence to keep Arctic air confined.

But recently, this air flow has become bent6 into a pronounced断然的,显著的 zigzag之字形 pattern, meandering漫步,漫谈 north and south. If you live in a place where it brings air up from the south, you get warm weather. In fact, record highs were reported this week in Washington state and Alaska.

But in the eastern United States, like some other unlucky parts of the globe, Arctic air is swooping突然袭击,突然下降 down from the north. And that's how you get a temperature of 3 degrees in Beijing, a reading of minus-42 in mainland Norway, and 18 inches of snow in parts of Britain, where a member of Parliament who said the snow "clearly indicates a cooling trend" was jeered10嘲笑,戏弄 by colleagues.

The zigzag7 pattern arises naturally from time to time, but it is not clear why it's so strong right now, said Michelle L'Heureux, a meteorologist气象学者 at the Climate Prediction Center of the National Oceanic and Atmospheric Administration. The center says the pattern should begin to weaken in a week or two.



点击收听单词发音收听单词发音  

1 groves eb036e9192d7e49b8aa52d7b1729f605     
树丛,小树林( grove的名词复数 )
参考例句:
  • The early sun shone serenely on embrowned groves and still green fields. 朝阳宁静地照耀着已经发黄的树丛和还是一片绿色的田地。
  • The trees grew more and more in groves and dotted with old yews. 那里的树木越来越多地长成了一簇簇的小丛林,还点缀着几棵老紫杉树。
2 atmospheric 6eayR     
adj.大气的,空气的;大气层的;大气所引起的
参考例句:
  • Sea surface temperatures and atmospheric circulation are strongly coupled.海洋表面温度与大气环流是密切相关的。
  • Clouds return radiant energy to the surface primarily via the atmospheric window.云主要通过大气窗区向地表辐射能量。
3 boulder BNbzS     
n.巨砾;卵石,圆石
参考例句:
  • We all heaved together and removed the boulder.大家一齐用劲,把大石头搬开了。
  • He stepped clear of the boulder.他从大石头后面走了出来。
4 noted 5n4zXc     
adj.著名的,知名的
参考例句:
  • The local hotel is noted for its good table.当地的那家酒店以餐食精美而著称。
  • Jim is noted for arriving late for work.吉姆上班迟到出了名。
5 frigid TfBzl     
adj.寒冷的,凛冽的;冷淡的;拘禁的
参考例句:
  • The water was too frigid to allow him to remain submerged for long.水冰冷彻骨,他在下面呆不了太长时间。
  • She returned his smile with a frigid glance.对他的微笑她报以冷冷的一瞥。
6 bent QQ8yD     
n.爱好,癖好;adj.弯的;决心的,一心的
参考例句:
  • He was fully bent upon the project.他一心扑在这项计划上。
  • We bent over backward to help them.我们尽了最大努力帮助他们。
7 zigzag Hf6wW     
n.曲折,之字形;adj.曲折的,锯齿形的;adv.曲折地,成锯齿形地;vt.使曲折;vi.曲折前行
参考例句:
  • The lightning made a zigzag in the sky.闪电在天空划出一道Z字形。
  • The path runs zigzag up the hill.小径向山顶蜿蜒盘旋。
8 meandering 0ce7d94ddbd9f3712952aa87f4e44840     
蜿蜒的河流,漫步,聊天
参考例句:
  • The village seemed deserted except for small boys and a meandering donkey. 整个村子的人都像是逃光了,只留下了几个小男孩和一头正在游游荡荡的小毛驴。 来自教父部分
  • We often took a walk along the meandering river after supper. 晚饭后我们常沿着那条弯弯曲曲的小河散步。
9 swooping ce659162690c6d11fdc004b1fd814473     
俯冲,猛冲( swoop的现在分词 )
参考例句:
  • The wind were swooping down to tease the waves. 大风猛扑到海面上戏弄着浪涛。
  • And she was talking so well-swooping with swift wing this way and that. 而她却是那样健谈--一下子谈到东,一下子谈到西。
10 jeered c6b854b3d0a6d00c4c5a3e1372813b7d     
v.嘲笑( jeer的过去式和过去分词 )
参考例句:
  • The police were jeered at by the waiting crowd. 警察受到在等待的人群的嘲弄。
  • The crowd jeered when the boxer was knocked down. 当那个拳击手被打倒时,人们开始嘲笑他。 来自《简明英汉词典》
TAG标签: climate cold warming
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