{"id":15588,"date":"2026-06-13T17:11:14","date_gmt":"2026-06-13T15:11:14","guid":{"rendered":"https:\/\/meteoinfo.si\/?p=15588"},"modified":"2026-06-13T18:41:44","modified_gmt":"2026-06-13T16:41:44","slug":"skrivnost-belih-prog-na-nebu-resnica-o-letalskih-sledeh-ki-burijo-domisljijo","status":"publish","type":"post","link":"https:\/\/meteoinfo.si\/en\/meteopedija\/razbijamo-mite\/skrivnost-belih-prog-na-nebu-resnica-o-letalskih-sledeh-ki-burijo-domisljijo\/","title":{"rendered":"Skrivnost belih prog na nebu: Resnica o letalskih sledeh, ki burijo domi\u0161ljijo"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">A za ta pojav obstaja zelo jasna fizikalna razlaga. Ne gre za nikakr\u0161no skrivnostno pr\u0161enje, temve\u010d za povsem naravne kondenzacijske sledi, ki nam lahko povedo veliko o trenutnih razmerah v vi\u0161jih plasteh ozra\u010dja.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/722036680_10233881722414209_2967280440628981348_n-1024x768.jpg\" alt=\"\" class=\"wp-image-15594\" srcset=\"https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/722036680_10233881722414209_2967280440628981348_n-1024x768.jpg 1024w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/722036680_10233881722414209_2967280440628981348_n-300x225.jpg 300w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/722036680_10233881722414209_2967280440628981348_n-768x576.jpg 768w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/722036680_10233881722414209_2967280440628981348_n-1536x1152.jpg 1536w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/722036680_10233881722414209_2967280440628981348_n-370x278.jpg 370w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/722036680_10233881722414209_2967280440628981348_n-270x203.jpg 270w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/722036680_10233881722414209_2967280440628981348_n-570x428.jpg 570w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/722036680_10233881722414209_2967280440628981348_n-740x555.jpg 740w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/722036680_10233881722414209_2967280440628981348_n-80x60.jpg 80w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/722036680_10233881722414209_2967280440628981348_n.jpg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Foto: E\u010do Marin<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Kako sploh nastane kondenzacijska sled?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Kondenzacijske sledi nastanejo po podobnem principu kot bela meglica, ki jo pozimi opazimo ob izdihu toplega zraka.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Potni\u0161ka letala obi\u010dajno letijo na vi\u0161inah med 9 in 14 kilometri. Tam so razmere povsem druga\u010dne kot pri tleh. Tlak je precej ni\u017eji, temperature pa se gibljejo med -40 in -60 stopinjami Celzija.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ko letalski motorji izgorevajo kerozin, ob tem nastajajo ogljikov dioksid, vodna para ter drobni delci saj in drugih spojin. Izpu\u0161na me\u0161anica je zelo vro\u010da in vla\u017ena. Ko zapusti motor in se pome\u0161a z ledeno mrzlim zrakom v okolici, se vodna para hitro ohladi, kondenzira in nato skoraj takoj zamrzne v drobne ledene kristale.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ti ledeni kristali tvorijo podolgovat oblak, ki ga s tal vidimo kot belo sled za letalom.<\/p>\n\n\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;6a2db7c3ae18b&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"6a2db7c3ae18b\" class=\"wp-block-image size-large wp-lightbox-container\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"629\" 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--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/8765287624-1024x629.png\" alt=\"\" class=\"wp-image-15595\" srcset=\"https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/8765287624-1024x629.png 1024w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/8765287624-300x184.png 300w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/8765287624-768x472.png 768w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/8765287624-370x227.png 370w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/8765287624-270x166.png 270w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/8765287624-570x350.png 570w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/8765287624-740x455.png 740w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/8765287624.png 1448w\" 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\tdata-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\"\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.thisImage.buttonRight\"\n\t\t\tdata-wp-style--top=\"state.thisImage.buttonTop\"\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: Flightradar24<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Zakaj nekatere sledi hitro izginejo, druge pa ostanejo?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">To je vpra\u0161anje, ki najpogosteje buri domi\u0161ljijo. \u010ce gre res samo za kondenzacijske sledi, zakaj nekatere izginejo v nekaj sekundah, druge pa ostanejo ve\u010d ur in se raz\u0161irijo \u010dez velik del neba?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Odgovor ne le\u017ei v letalu, tipu motorja ali vsebini rezervoarja, temve\u010d izklju\u010dno v vla\u017enosti zraka na vi\u0161ini, na kateri letalo tisti trenutek leti.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u010ce letalo pre\u010dka obmo\u010dje, kjer je zrak suh, ledeni kristali v sledi hitro sublimirajo \u2013 to pomeni, da preidejo neposredno iz trdnega stanja (ledu) nazaj v nevidno vodno paro (plin). Sled zato dobesedno izpuhti v nekaj sekundah ali minutah.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u010ce pa je zrak na vi\u0161ini deset kilometrov \u017ee naravno zelo vla\u017een in blizu nasi\u010denja, ledeni kristali iz izpuha ne morejo sublimirati. Nasprotno, nase za\u010dnejo vezati dodatno vlago iz okolice in rastejo. Pomembno vlogo imajo tudi vi\u0161inski vetrovi. \u010ce so ti mo\u010dni, sledi razpihajo in raz\u0161irijo. Iz ozkih belih \u010drt tako nastanejo \u0161iroki, tanki oblaki, ki so po videzu in sestavi zelo podobni naravnim visokim oblakom, cirusom.<\/p>\n\n\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;6a2db7c3aea9b&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"6a2db7c3aea9b\" class=\"wp-block-image size-large wp-lightbox-container\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"758\" 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--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/724300567_10233881724334257_2962375419451015354_n-1024x758.jpg\" alt=\"\" class=\"wp-image-15592\" srcset=\"https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/724300567_10233881724334257_2962375419451015354_n-1024x758.jpg 1024w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/724300567_10233881724334257_2962375419451015354_n-300x222.jpg 300w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/724300567_10233881724334257_2962375419451015354_n-768x569.jpg 768w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/724300567_10233881724334257_2962375419451015354_n-1536x1137.jpg 1536w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/724300567_10233881724334257_2962375419451015354_n-370x274.jpg 370w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/724300567_10233881724334257_2962375419451015354_n-270x200.jpg 270w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/724300567_10233881724334257_2962375419451015354_n-570x422.jpg 570w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/724300567_10233881724334257_2962375419451015354_n-740x548.jpg 740w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/724300567_10233881724334257_2962375419451015354_n-80x60.jpg 80w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/724300567_10233881724334257_2962375419451015354_n.jpg 1937w\" 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\tdata-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\"\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.thisImage.buttonRight\"\n\t\t\tdata-wp-style--top=\"state.thisImage.buttonTop\"\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: E\u010do Marin<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Kaj nam sledi za letali povedo o vremenu?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Dolgotrajne kondenzacijske sledi so lahko dober pokazatelj razmer v zgornji troposferi. \u010ce za letali ostajajo dolge bele proge, ki se po\u010dasi \u0161irijo, to pomeni, da je zrak visoko v ozra\u010dju zelo vla\u017een.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tak\u0161ne razmere pogosto naznanjajo prihod vremenskih sprememb. V vi\u0161inah se lahko \u017ee nabira vlaga, ki je povezana s pribli\u017eevanjem fronte ali poslab\u0161anjem vremena. Nebo nam torej preko letalskih sledi pogosto sporo\u010di, da se nad nami \u017ee pripravlja de\u017e, \u010deprav je pri tleh vreme v tistem trenutku \u0161e povsem son\u010dno in mirno.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Mit o kemtrejlih vs. fizikalna realnost<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Teorije o kemi\u010dnih sledeh trdijo, da dolg obstoj prog dokazuje namerno \u0161kropljenje kemikalij. Vendar pa fizika in logika ta mit hitro postavita na la\u017e.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pr\u0161enje kakr\u0161nih koli snovi z vi\u0161ine deset kilometrov z namenom ciljanja dolo\u010denega obmo\u010dja na tleh bi bilo popolnoma neu\u010dinkovito. Na teh vi\u0161inah namre\u010d pogosto pihajo mo\u010dni vetrovi, ki dosegajo hitrosti tudi preko 200 kilometrov na uro. Ti vetrovi bi vsak izpu\u0161\u010deni delec v nekaj urah raznesli stotine ali tiso\u010de kilometrov stran od mesta preleta, dale\u010d \u010dez dr\u017eavne meje.<\/p>\n\n\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;6a2db7c3af38d&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"6a2db7c3af38d\" class=\"wp-block-image size-large wp-lightbox-container\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" 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--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/1fdf1f06-4b5d-4c02-a082-6a77469d5787-1024x768.jpg\" alt=\"\" class=\"wp-image-15606\" srcset=\"https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/1fdf1f06-4b5d-4c02-a082-6a77469d5787-1024x768.jpg 1024w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/1fdf1f06-4b5d-4c02-a082-6a77469d5787-300x225.jpg 300w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/1fdf1f06-4b5d-4c02-a082-6a77469d5787-768x576.jpg 768w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/1fdf1f06-4b5d-4c02-a082-6a77469d5787-1536x1152.jpg 1536w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/1fdf1f06-4b5d-4c02-a082-6a77469d5787-370x278.jpg 370w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/1fdf1f06-4b5d-4c02-a082-6a77469d5787-270x203.jpg 270w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/1fdf1f06-4b5d-4c02-a082-6a77469d5787-570x428.jpg 570w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/1fdf1f06-4b5d-4c02-a082-6a77469d5787-740x555.jpg 740w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/1fdf1f06-4b5d-4c02-a082-6a77469d5787-80x60.jpg 80w, https:\/\/meteoinfo.si\/wp-content\/uploads\/2026\/06\/1fdf1f06-4b5d-4c02-a082-6a77469d5787.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\tdata-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\"\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.thisImage.buttonRight\"\n\t\t\tdata-wp-style--top=\"state.thisImage.buttonTop\"\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: E\u010do Marin<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Dolge bele sledi na nebu torej niso dokaz nobene skrivne agende. Naslednji\u010d, ko boste na nebu opazili dolgo belo \u010drto, ki se po\u010dasi \u0161iri v tanko sivkasto kopreno, ni razloga za skrb. Gre za kondenzacijsko sled, ki nastane zaradi kombinacije izpuha letalskega motorja, zelo nizkih temperatur in vla\u017enega zraka v vi\u0161inah.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tak\u0161ni prizori so lahko celo zanimiv vremenski namig. Povedo nam, da je visoko nad nami veliko vlage in da se vreme morda \u017ee pripravlja na spremembo.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>V\u010dasih je nebo po preletu letal popolnoma \u010disto, \u017ee naslednji dan pa za njimi ostane gosta mre\u017ea belih sledi, ki se raz\u0161iri v tanko obla\u010dno kopreno. Popolnoma razumljivo je, da tak\u0161ni prizori vzbujajo vpra\u0161anja. Prav iz teh opazovanj se namre\u010d \u017ee leta hrani ena najbolj trdo\u017eivih teorij zarote o tako imenovanih chemtrails oziroma kemi\u010dnih sledeh, s katerimi naj bi nas namerno zastrupljali in umetno spreminjali vreme.<\/p>\n","protected":false},"author":4,"featured_media":15592,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[82,126],"tags":[],"topic":[351],"topic_color":[172],"class_list":["post-15588","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-meteopedija","category-razbijamo-mite","topic-razbijamo-mite","topic_color-blue"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Skrivnost belih prog na nebu: Resnica o letalskih sledeh, ki burijo domi\u0161ljijo<\/title>\n<meta name=\"description\" content=\"Bele sledi za letali pogosto burijo domi\u0161ljijo, a imajo jasno fizikalno razlago. 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