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Cyclones and climate change 飓风与气候变化 The new normal? 习以为常? Physics suggests that storms will get worse as theplanet warms. But it is too early to tell if it isactually happening 物理学研究表明全球变暖将导致更猛烈的风暴，但一切尚未可知 WAS typhoon Haiyan the strongest recorded storm to make landfall? 台风海燕是有记录以来的最强登陆风暴吗? Meteorologists will never know.Reliable records go back only a few decades. 气象学家们恐怕永远都不会知道。可靠记录只能回溯几十年。 But it is surely one of them. Besides the devastation and the death toll, one way to assess itspotency is to compare it with Katrina, the hurricane that devastated New Orleans in 2005. 不过可以肯定，这是史上最强风暴之一。除了统计摧毁的建筑和死亡的人数，评估该风暴威力的另一个办法，是将它和2005年摧毁新奥良的卡特里娜飓风作比较。 At its most intense, Haiyan s peak wind speeds were probably greater than 300kph. 在高峰期，海燕的最高风速可能超过每小时300公里， The best estimate for Katrina, when it hit land, is around 200kph. | 
