{"id":97445,"date":"2017-05-10T07:33:52","date_gmt":"2017-05-10T06:33:52","guid":{"rendered":"http:\/\/zakrasnejsivimperk.cz\/?p=97445"},"modified":"2017-05-10T07:42:24","modified_gmt":"2017-05-10T06:42:24","slug":"nebe-nad-hlavou-ledovi-muzi-prinasi-ochlazeni-a-casto-take-navrat-prizemnich-mraziku","status":"publish","type":"post","link":"https:\/\/zakrasnejsivimperk.cz\/?p=97445","title":{"rendered":"NEBE NAD HLAVOU: Ledov\u00ed mu\u017ei nos\u00ed do st\u0159edn\u00ed Evropy ochlazen\u00ed a tak\u00e9 p\u0159\u00edzemn\u00ed mraz\u00edky \u010di dokonce mrazy"},"content":{"rendered":"
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Ilustra\u010dn\u00ed foto: Ji\u0159\u00ed VOP\u011aNKA<\/figcaption><\/figure>\n

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Takzvan\u00ed \u201eledov\u00ed mu\u017ei\u201c, zn\u00e1m\u00ed Pankr\u00e1c, Serv\u00e1c a Bonif\u00e1c, se v kalend\u00e1\u0159i objevuj\u00ed na konci prvn\u00ed poloviny kv\u011btna a p\u0159in\u00e1\u0161\u00ed do st\u0159edn\u00ed Evropy ochlazen\u00ed a \u010dasto tak\u00e9 p\u0159\u00edzemn\u00ed mraz\u00edky nebo dokonce i mrazy.<\/h6>\n

Tato pranostika se \u010dasto objevuje v kronik\u00e1ch z 19. stolet\u00ed, to se podle statistik vyskytovaly ledov\u00ed mu\u017ei s pravd\u011bpodobnost\u00ed 55 a\u017e 65 % (v 21. stolet\u00ed je v\u00fdskyt pravd\u011bpodobn\u00fd z 30 %).<\/p>\n

Pr\u00e1v\u011b v polovin\u011b kv\u011btna jsou mraz\u00edky velmi nebezpe\u010dn\u00e9 pro zem\u011bd\u011blsk\u00e9 plodiny a mohou\u00a0 v\u00fdrazn\u011b ovlivnit n\u00e1sleduj\u00edc\u00ed \u00farodu, zejm\u00e9na pak ovoce a zeleniny. Na\u0161i p\u0159edkov\u00e9 po\u010das\u00ed z tohoto d\u016fvodu d\u016fkladn\u011b pozorovali a v lidov\u00fdch pranostik\u00e1ch spojily ochlazen\u00ed pr\u00e1v\u011b se sv\u00e1tky Pankr\u00e1ce, Serv\u00e1ce a Bonif\u00e1ce (12.5 a\u017e 14.5.). Ochlazen\u00ed je d\u00e1no severn\u00edm, severoz\u00e1padn\u00edm nebo severov\u00fdchodn\u00edm proud\u011bn\u00edm, tedy severn\u00ed nebo severov\u00fdchodn\u00ed cyklon\u00e1ln\u00ed situac\u00ed nad Evropou.<\/p>\n

Obdob\u00ed ledov\u00fdch mu\u017e\u016f ukon\u010duje jejich kucha\u0159ka \u2013 \u017dofie, kterou v kalend\u00e1\u0159i najdeme 15. kv\u011btna a projevuje se p\u0159edev\u0161\u00edm de\u0161ti. V pr\u016fb\u011bhu roku se pom\u011brn\u011b b\u011b\u017en\u011b vyskytuj\u00ed situace vp\u00e1du v\u00fdrazn\u011b chladn\u011bj\u0161\u00edch vzduchov\u00fdch hmot ze severu. V zim\u011b tyto situace p\u0159in\u00e1\u0161\u00ed arktick\u00e9 mrazy, s postupem jara a oteplov\u00e1n\u00ed na severn\u00ed polokouli ji\u017e vp\u00e1dy vzduchu od severu nep\u0159in\u00e1\u0161\u00ed arktick\u00e9 mrazy, ale neust\u00e1le znamenaj\u00ed v\u00fdrazn\u00e9 ochlazen\u00ed.<\/p>\n

Z dlouhodob\u00e9 empirick\u00e9 zku\u0161enost je pr\u00e1v\u011b obdob\u00ed kv\u011btna posledn\u00edm term\u00ednem, kdy takov\u00e9 ochlazen\u00ed dosahuje v\u0161eobecn\u011b (tj, na v\u011bt\u0161in\u011b \u00fazem\u00ed) pod bod mrazu.<\/p>\n

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NEBE NAD HLAVOU<\/strong><\/a><\/p>\n

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 <\/p>\n","protected":false},"excerpt":{"rendered":"

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