极端天气.ppt

EXTREME WEATHER
By JiangBing
7/30/2017
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太原理工大学机电所
What is extreme weather?
Extreme weather events is the state of the weather (climate) serious deviation from the average state, in normal condition, that is impossible to happen. Simply says, extreme weather events is a small probability event for 50 years or 100 years.
7/30/2017
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太原理工大学机电所
high temperature,cold wave
stormy wind , Tornado
less rainfall/no rainfall
thunderstorm
ice rain ,hail/hailstone
blizzard /snowstorm
Frost
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太原理工大学机电所
Over the past 50 years, the trend of extreme weather events especially like heavy rainfall, heat waves, floods, snowfall and so on, increasing enhanced
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太原理工大学机电所
In July 21,Beijing had suffered heavy rain disaster
July 30, 9th Tropical Storm “sura”,July 31,10th Tropical Storm “Davidow” e Strong tropical storm, e a rare double typhoon
March 19, Argentina had suffered heavy rain and had last 25 minutes
This year
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太原理工大学机电所
April 4, New Mexico had suffered lightning strikes,it’s last time was more than 11 minute
May 14, Bosnia had appeared summer snow
In February, some parts of China the temperature drops to - ℃
European cold wave had Killed more than 600 people
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太原理工大学机电所
Tornado attack the southern United States, a large number of towns were destroyed and hundreds of people were killed.
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太原理工大学机电所
Sand storms have hit much of northern China, leaving many places include Beijing shrouded in thick yellow dust.
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太原理工大学机电所
1800 people died, over 430 million houses collapsed and economic losses more than 150 billion
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太原理工大学机电所
High temperatures lead to death, especially the elderly.
At 2009,Jinan’s temperature had reached 43℃
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太原理工大学机电所