http___www.jutarnji.hr_svjetska-meteoroloska-organizacija-upozorava--na-tihom-oceanu-ovaj-ce-se-mjesec-razviti-el-nino-_1056051__1.xml
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Thursday, November 17, 2011 Weather harder to predict, Environment Canada warns A senior climatologist with Environment Canada says the country should expect a cold winter, but warns that forecasting is getting more and more difficult. "It's almost as if you can't look at the past to tell us what the future is," David Phillips told CBC News. "There's a new norm: Expect the unexpected." Phillips said the long-term models show that most of the country will be colder than normal because of La Nina, El Nino's lesser known counterpart. El Nino and La Nina are two phases of a semi-regular temperature cycle in the tropical Pacific Ocean: El Nino is characterized by warmer-than-normal ocean surface temperatures in the eastern Pacific, while La Nina occurs when the ocean is cooler than normal. These fluctuations in water temperature affect the air pressure above the ocean and have a dramatic impact on the weather around the Pacific Ocean and the world. This winter, that should mean cold temperatures. more "It's almost as if you can't look at the past to tell us what the future is," David Phillips told CBC News. "There's a new norm: Expect the unexpected." Phillips said the long-term models show that most of the country will be colder than normal because of La Nina, El Nino's lesser known counterpart. El Nino and La Nina are two phases of a semi-regular temperature cycle in the tropical Pacific Ocean: El Nino is characterized by warmer-than-normal ocean surface temperatures in the eastern Pacific, while La Nina occurs when the ocean is cooler than normal. These fluctuations in water temperature affect the air pressure above the ocean and have a dramatic impact on the weather around the Pacific Ocean and the world. This winter, that should mean cold temperatures. more Posted by Matt at 11:46 AM Categories: NATURAL DISASTERS
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KLIMATSKI FENOMEN Svjetska meteorološka organizacija upozorava: Na Tihom oceanu ovaj će se mjesec razviti El Nino! Goran Mehkek/CROPIX ŽENEVA - Klimatski poremećaj El Nino, koji utječe na klimu na cijeloj Zemlji, vjerojatno će se razviti ovog i idućeg mjeseca na Tihom oceanu, priopćila je u utorak Svjetska meteorološka organizacija (WMO). Taj fenomen, kojega karakteriziraju neuobičajeno visoke temperature oceana na tropskom Pacifiku, ranije se povezivala sa sušim vremenskim uvjetima nego što je normaln o u Australji, Indoneziji, na Filipinima, u sjeveroistočnom Brazilu, jugoistočnoj Africi i dijelovaima Azije, navodi se u priopćenju. "Slabi El Nino mogao bi se razviti u rujnu i listopadu i trajati do zime na sjevernoj polulopti", navodi WMO. El Nino nastaje prekomjernim zagrijavanjem južnog dijela Tihog oceana dok na sjeveru oceanske vode ostaju hladne. Ovakav poremećaj pojavljuje se svakih četiri do pet godina i traje između 12 i 18 mjeseci. Pod njegovim djelovanjem značajno se povećava količina oborina u tropskim krajevima, a područja uobičajeno umjerene klime učestalo zahvaćaju katastrofalne suše. FACEBOOK KOMENTARI PREMIJER POD PALJBOM ZBOG ČAČIĆA VIDEO Milanović izgubio živce: 'HDZ-ovci me tjeraju da budem grub. Kad god pokušam biti pristojan osjećam se loše' PA IM DAJ DRŽAVU...