why heat wave occurs and cause of extreme weather (changes in jet strem)
TRANSCRIPT
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Heat Wave started to claim more and more life each year, even in Europe and USA
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prolonged period of excessively hot weather, which may be accompanied by high humidity
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If humidity is high people sweat less and body temperature rises rapidly
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Cause of Heat wave:High pressure in high altitude
(10,000-25000 ft). Cold air sink down and act dome, capping
atmosphere. And radiated heat get trapped inside dome causing
increasing temperature
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Changes in Jet stream main cause of heat waves
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Cold arctic air
Warm airjet
Jet streams form in high altitude when cold arctic air meets warm air
Jet streams are fast flowing air current (as fast as 200mph
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Hot
Warm air
Ω wave in Jet stream means extreme weather
Ω wave in Jet stream pulled in air from Africa & caused heat wave in Europe in
2015
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Ω wave in Jet stream pulled in air from Arctic & caused cold wave in USA in
2014-15
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Arctic warming is making Jet
streams weaker and increasing
chances of Ω waves
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So,Changes are here
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