假如在未來(lái)50年的時(shí)間里,地球的平均溫度再升高1攝氏度的話," />

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全球變暖之-全球氣候變暖將會(huì)導(dǎo)致更多的颶風(fēng)出現(xiàn)(雙語(yǔ))

作者:不詳   發(fā)布時(shí)間:2009-12-21 15:41:38  來(lái)源:網(wǎng)絡(luò)
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  全球變暖之-全球氣候變暖將會(huì)導(dǎo)致更多的颶風(fēng)出現(xiàn)(雙語(yǔ)) 
  假如在未來(lái)50年的時(shí)間里,地球的平均溫度再升高1攝氏度的話,那么更多的颶風(fēng)將會(huì)出現(xiàn)。
  The violence and frequency of hurricanes will increase with global warming, the Government‘s chief scientific adviser warned today.
  Sir David King issued his warning as Hurricane Rita menaced America‘s Gulf Coast and the heart of the US oil-refining industry, hard on the heels of Hurricane Katrina, which devastated the city of New Orleans and surrounding areas.
  Interviewed on BBC Radio 4‘s Today programme, Sir David also cautioned that the current spate of high-powered hurricanes is likely to continue into next month。
  Sir David said: There is no question that intensity of hurricanes is dependent on surface sea temperature.
  What we have seen in the Gulf of Mexico this year in August, surface sea temperatures were two to three degrees centigrade warmer than usual.
  This means this is potentially an extreme event in terms of hurricane generation, so in that sense it is no surprise that we are seeing these intense hurricanes.
  Across the central Atlantic sea temperatures will probably continue to be about one degree centigrade above normal right through to the end of this month, into October, which means that we can also anticipate that hurricanes will continue over that period at this intensity.
  The point is that there is nobody arguing that sea temperature does not create more intense hurricanes。 And as we then move forward in time, and the planet continues to warm up, we have therefore got to anticipate 。。。 that hurricane intensity, the baseline intensity of hurricanes will increase.
  Sir David added: If in 50 years‘ time the average temperatures are a further one degree centigrade up, the conclusion is inescapable that there should be more of this kind of activity.
  英國(guó)政府首席科學(xué)顧問(wèn)戴維卡特里娜颶風(fēng)剛剛重創(chuàng)了美國(guó)新奧爾良市及其周邊地區(qū),接踵而至的麗塔颶風(fēng)正使該國(guó)墨西哥灣沿岸以及煉油業(yè)的心臟地帶面臨嚴(yán)重威脅。戴維毫無(wú)疑問(wèn),颶風(fēng)強(qiáng)度的大小取決于海洋表面溫度的高低。從我們今年8月在墨西哥灣地區(qū)觀測(cè)到的情況來(lái)看,那里海面的溫度較之往年要高出2至3攝氏度。從颶風(fēng)的產(chǎn)生這一角度來(lái)看,這種情況的出現(xiàn)或許意味著我們正在面臨一個(gè)極為嚴(yán)重的局面,如此說(shuō)來(lái),前面那幾場(chǎng)強(qiáng)颶風(fēng)的到來(lái)就并不令人感到意外了。從現(xiàn)在起直到本月底乃至10月份,大西洋中部地區(qū)的海面溫度可能會(huì)一直比正常情況高出大約1攝氏度,這也意味著此種強(qiáng)度的颶風(fēng)會(huì)在這段時(shí)間里不斷出現(xiàn),F(xiàn)在沒(méi)有誰(shuí)會(huì)爭(zhēng)辯說(shuō)較高的海面溫度不會(huì)造成強(qiáng)度更高的颶風(fēng)。假如我們把眼光往前看的話,地球的溫度在持續(xù)升高,于是我們便可以預(yù)計(jì)颶風(fēng)的強(qiáng)度以及衡量這一強(qiáng)度的下限也將會(huì)不斷上升。
  另外,金還補(bǔ)充說(shuō):假如在未來(lái)50年的時(shí)間里,地球的平均溫度再升高1攝氏度的話,那么我們可以十分肯定的認(rèn)為,諸如此類的自然現(xiàn)象還將會(huì)更多的出現(xiàn)。
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