Vol.4 No.4 (August 2014)
The Benefit of Tropical Cyclone on Cooling Effect in Shanghai
For a long time, people usually pay much attention to the catastrophe of tropical cyclone (TC). A large quantity of studies has been carried out to improve forecasting accuracy, protect against and diminish TC disasters. However, few studies on TC benefits have been involved. In this paper, the benefits of TC on mitigating the summer heat wave have been preliminarily studied by using the data of Shanghai’s temperature from 1873 to 2006. The result shows that in the last hundred years in Shanghai, about 69% heat waves breaking are associated with the activity of TC in northwest Pacific. During the day of heat wave breaking, daily maximum temperature is 1.78˚C lower than the day before on average. What’s more, this trend will sometimes last for 8 days or more, and temperature decrease adds up to 11˚C averagely, which can save about 56,015,000 kwh power being used for summer heat wave prevention, adding up to 34,281,180 Yuan RMB (the maximal as high as 155 million Yuan).
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