TOR­NADO TRIG­GER

Fre­quency, sever­ity of tor­na­does linked to global warm­ing

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Global warm­ing re­spon­si­ble for in­crease in in­ten­sity of tor­na­does

RE­SEARCHERS DID not con­sider cli­mate change to be a fac­tor in for­ma­tion of tor­na­does be­cause there was no pat­tern to link the two. But an anal­y­sis of records on tor­na­does in the US be­tween 1954 and 2013 has found that there has been a con­sis­tent de­crease in the num­ber of days wit­ness­ing at least one tor­nado, while the num­ber of days hav­ing mul­ti­ple tor­na­does has in­creased. Though tor­na­does are form­ing on fewer days (187 tor­nado days in 1971 against 79 in 2013), the sever­ity and fre­quency of the num­ber of tor­na­does formed in one par­tic­u­lar day has in­creased. There were 1,700 in 2011 and 2014 has al­ready seen 189. Cli­mate Dy­nam­ics, Au­gust 6

JUHI JHA / CSE

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