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Building Better Cities

机译：建设更好的城市

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The storm that hit Toronto on July 8,2013 dumped 126 millimetres of rainfall in a two-hour period, which is more rainfall than the city typically gets in the entire month of July. Severe flash floods paralyzed public transit and stranded thousands of commuters. Power outages affected at least 300,000 residents, and a billion litres of sewage surged into Toronto's streets and harbour. Toronto's wettest day in history also set the record for Ontario insured-property damages arising from a single natural disaster. The costs were over $850-million. As Toronto Star columnist Christopher Hume wrote at the time, we "face a double whammy of disaster: Not only is the city's aging infrastructure unable to cope with the load, but that load has grown heavier because of climate change." The World Meteorological Organization reports that floods were the most frequently experienced extreme weather event between 2001 and 2010, and that northern and eastern Canada were particularly wet. This same decade was also Canada's warmest. Climatologists predict a continued rise in temperature and, as a result, a high likelihood of intense rainfall events and increased frequency and duration of drought. Certainly, we all recall the historic drought in 2012, which had catastrophic ramifications for agriculture. A continued rise in global temperature is also anticipated to increase sea levels and coastal flooding.
机译：2013年7月8日袭击多伦多的暴风雨在两个小时内倾泻了126毫米的降雨量，比整个七月整个月的平均降雨量还多。严重的山洪淹没了公共交通，使数千名通勤者滞留。停电影响了至少30万居民，十亿升污水涌入多伦多的街道和海港。多伦多历史上最潮湿的一天也创下了由一次自然灾害引起的安大略省保险财产损失的记录。成本超过8.5亿美元。正如《多伦多星报》专栏作家克里斯托弗·休姆（Christopher Hume）当时所写的那样，我们“面临双重灾难：不仅城市老化的基础设施无法应付负荷，而且由于气候变化，负荷变得越来越重。”世界气象组织报告说，洪水是2001年至2010年间最常发生的极端天气事件，加拿大北部和东部特别潮湿。同一十年也是加拿大最热的十年。气候学家预测温度会持续升高，因此，发生强降雨事件的可能性很高，干旱的频率和持续时间也会增加。当然，我们都记得2012年的历史性干旱，农业遭受了灾难性的后果。预计全球气温的持续上升也会增加海平面和沿海洪灾。

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  • 来源
    《Alternatives Journal》 |2015年第1期|36-38|共3页
  • 作者

    LIAT MARGOLIS;

  • 作者单位

    University of Toronto;

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  • 正文语种 eng
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