{"id":12422,"date":"2024-11-30T10:42:00","date_gmt":"2024-11-30T09:42:00","guid":{"rendered":"https:\/\/meteoinfo.si\/?p=12422"},"modified":"2025-10-24T11:07:21","modified_gmt":"2025-10-24T09:07:21","slug":"polarni-vrtinec","status":"publish","type":"post","link":"https:\/\/meteoinfo.si\/en\/meteopedija\/polarni-vrtinec\/","title":{"rendered":"Polarni vrtinec"},"content":{"rendered":"\n<p>Polarni vrtinec si lahko predstavljamo kot ogromno vrte\u010do gmoto mrzlega zraka z nizkim zra\u010dnim tlakom, ki se jeseni za\u010dne oblikovati nad polarnimi obmo\u010dji. Nastane zaradi izrazitih temperaturnih razlik med hladnim zrakom na severu in toplej\u0161im zrakom na jugu. Jeseni se polarni predeli hitro ohlajajo, saj prehajajo v temo, medtem ko se v zmernih geografskih \u0161irinah ohlajanje odvija po\u010dasneje. Zaradi te razlike se v vi\u0161jih plasteh ozra\u010dja ustvarjajo mo\u010dni vetrovi, ki nad Arktiko tvorijo vrtinec.<\/p>\n\n\n\n<iframe loading=\"lazy\" src=\"https:\/\/www.facebook.com\/plugins\/video.php?height=386&#038;href=https%3A%2F%2Fwww.facebook.com%2FArsoVreme%2Fvideos%2F416345176451913%2F&#038;show_text=false&#038;width=560&#038;t=0\" width=\"560\" height=\"386\" style=\"border:none;overflow:hidden\" scrolling=\"no\" frameborder=\"0\" allowfullscreen=\"true\" allow=\"autoplay; clipboard-write; encrypted-media; picture-in-picture; web-share\" allowFullScreen=\"true\"><\/iframe>\n\n\n\n<p>Ko se dnevi kraj\u0161ajo in temperature padajo, se vrtinec krepi in postaja stabilnej\u0161i. Mrzel zrak ostane \u00bbujet\u00ab v visokih geografskih \u0161irinah, Evropa pa se znajde pod vplivom toplej\u0161ih zahodnih zra\u010dnih tokov z Atlantika. Tak\u0161ne zime so pri nas pogosto bolj vla\u017ene, a manj mrzle. Sne\u017eenje je omejeno predvsem na vi\u0161je lege, ni\u017eine pa ve\u010dino \u010dasa ostajajo brez sne\u017ene odeje.<\/p>\n\n\n\n<p class=\"has-large-font-size\"><strong>Ko vrtinec oslabi<\/strong><\/p>\n\n\n\n<p>Povsem druga\u010de je, ko vrtinec oslabi ali se celo razdeli na ve\u010d manj\u0161ih jeder. Veter se takrat iz prevladujo\u010de zahodne obrne na severno smer, mrzel zrak pa se&nbsp;lahko spusti dale\u010d proti jugu. To lahko prinese dolgotrajna obdobja mraza in obilne sne\u017ene padavine, a tudi ve\u010d vremenskih skrajnosti, ko hudemu mrazu sledi nenadna in mo\u010dna odjuga.<\/p>\n\n\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;69fe394aaa6c6&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"69fe394aaa6c6\" class=\"wp-block-image size-large wp-lightbox-container\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/meteoinfo.si\/wp-content\/uploads\/2025\/10\/505540576_2972987039575704_5266654331452016736_n-1024x683.jpg\" alt=\"\" class=\"wp-image-12424\" srcset=\"https:\/\/meteoinfo.si\/wp-content\/uploads\/2025\/10\/505540576_2972987039575704_5266654331452016736_n-1024x683.jpg 1024w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2025\/10\/505540576_2972987039575704_5266654331452016736_n-300x200.jpg 300w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2025\/10\/505540576_2972987039575704_5266654331452016736_n-768x512.jpg 768w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2025\/10\/505540576_2972987039575704_5266654331452016736_n-1536x1024.jpg 1536w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2025\/10\/505540576_2972987039575704_5266654331452016736_n-370x247.jpg 370w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2025\/10\/505540576_2972987039575704_5266654331452016736_n-270x180.jpg 270w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2025\/10\/505540576_2972987039575704_5266654331452016736_n-570x380.jpg 570w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2025\/10\/505540576_2972987039575704_5266654331452016736_n-740x493.jpg 740w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2025\/10\/505540576_2972987039575704_5266654331452016736_n.jpg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\taria-label=\"Enlarge\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.imageButtonRight\"\n\t\t\tdata-wp-style--top=\"state.imageButtonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><figcaption class=\"wp-element-caption\">Foto: Rok Nosan<\/figcaption><\/figure>\n\n\n\n<p class=\"has-large-font-size\"><strong>Kako nanj vplivajo podnebne spremembe<\/strong><\/p>\n\n\n\n<p>Arktika se v zadnjih desetletjih segreva hitreje kot drugi deli sveta. Zaradi manj\u0161ega obsega morskega ledu se razmerje med toplim morjem in hladnim zrakom spreminja, s tem pa tudi stabilnost polarnega vrtinca. Ve\u010d odprtega morja pomeni ve\u010d toplote in vlage, kar lahko oslabi vrtinec in pove\u010da mo\u017enost, da se mrzel zrak spusti proti jugu.<\/p>\n\n\n\n<p>Z drugimi besedami: to, da se Arktika segreva, ne pomeni nujno milej\u0161ih zim pri nas \u2013 v\u010dasih celo nasprotno. Zaradi pogostej\u0161ih motenj v zra\u010dnem toku lahko Evropa do\u017eivi izrazitej\u0161e ohladitve, zlasti pozno pozimi ali zgodaj spomladi.<\/p>\n\n\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;69fe394aaae8a&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"69fe394aaae8a\" class=\"wp-block-image size-full wp-lightbox-container\"><img loading=\"lazy\" decoding=\"async\" width=\"785\" height=\"774\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/meteoinfo.si\/wp-content\/uploads\/2025\/10\/polarni1.png\" alt=\"\" class=\"wp-image-12423\" srcset=\"https:\/\/meteoinfo.si\/wp-content\/uploads\/2025\/10\/polarni1.png 785w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2025\/10\/polarni1-300x296.png 300w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2025\/10\/polarni1-768x757.png 768w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2025\/10\/polarni1-370x365.png 370w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2025\/10\/polarni1-270x266.png 270w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2025\/10\/polarni1-570x562.png 570w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2025\/10\/polarni1-740x730.png 740w\" sizes=\"auto, (max-width: 785px) 100vw, 785px\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\taria-label=\"Enlarge\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.imageButtonRight\"\n\t\t\tdata-wp-style--top=\"state.imageButtonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><figcaption class=\"wp-element-caption\">Vir: ECMWF<\/figcaption><\/figure>\n\n\n\n<p class=\"has-large-font-size\"><strong>Zakaj ga spremljajo meteorologi<\/strong><\/p>\n\n\n\n<p>Na mo\u010d in stabilnost polarnega vrtinca vplivajo \u0161tevilni dejavniki. Najpomembnej\u0161i so spremembe temperature v vi\u0161jih plasteh ozra\u010dja, obseg sne\u017ene odeje nad Sibirijo ter dogajanje v troposferi \u2013 v plasti, kjer nastaja vreme. \u010ce se nad Arktiko pojavi nenadno segrevanje v stratosferi, plasti nad troposfero, se vetrovi okoli vrtinca upo\u010dasnijo. To pogosto napoveduje njegovo oslabitev in s tem ve\u010djo mo\u017enost, da se mrzel zrak spusti proti jugu.<\/p>\n\n\n\n<p>Meteorologi ga zato natan\u010dno spremljajo, saj je eden najzanesljivej\u0161ih pokazateljev zimskih razmer v Evropi. Ko vrtinec ohranja svojo mo\u010d, so zime v Sloveniji milej\u0161e in bolj vetrovne, ko pa oslabi, se pove\u010da verjetnost mraza in sne\u017eenja.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Polarni vrtinec je eden klju\u010dnih pokazateljev, kak\u0161na bo zima v Evropi. To je obse\u017een sistem mrzlega zraka nad Arktiko, ki deluje kot meja med mrzlim polarnim zrakom na severu in toplej\u0161imi zra\u010dnimi masami na jugu. Mo\u010d in stabilnost polarnega vrtinca pomembno vplivata na vreme tudi v na\u0161ih krajih.<\/p>\n","protected":false},"author":4,"featured_media":12423,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[82,125],"tags":[],"topic":[],"topic_color":[],"class_list":["post-12422","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-meteopedija","category-vremenski-pojavi"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Polarni vrtinec (Meteoinfo Slovenija)<\/title>\n<meta name=\"description\" content=\"Polarni vrtinec je eden klju\u010dnih pokazateljev, kak\u0161na bo zima v Evropi.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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