Poyasnenie: Pochemu v severnyh oblastyah Severnoi Ameriki tak teplo? Obychno v eto vremya goda – v seredine noyabrya – srednie temperatury nizhe primerno na 30 gradusov Farengeita (okolo 17 gradusov Cel'siya). V Evrope takogo potepleniya ne otmechaetsya. Odin faktor – neobychno bol'shaya i stabil'naya oblast' vysokogo davleniya, kotoraya sformirovalas' nad Kanadoi i zaderzhivaet holodnyi arkticheskii vozduh. Hotya fundamental'nye prichiny lyubyh pogodnyh yavlenii obychno slozhny, sushestvuet mnenie, chto ustoichivyi kanadskii anticiklon svyazan s povyshennoi temperaturoi poverhnosti srednei chasti Tihogo okeana, nablyudavsheisya proshloi zimoi, eto yavlenie nazyvayut El'-Nin'o. Odnako zhiteli Severnoi Ameriki mogut poka radovat'sya teploi pogode. Cherez odnu ili dve nedeli ponizhennaya temperatura, kotoraya seichas otmechaetsya v seredine Tihogo okeana – yavlenie La-Nin'ya – mozhet nachat' okazyvat' vliyanie na veter i temperaturu v Severnoi Amerike.

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