{"id":896,"date":"2008-03-17T10:42:00","date_gmt":"2008-03-17T09:42:00","guid":{"rendered":"https:\/\/kids.esa.int\/a_swirling_atmospheric_sink_on_venus\/"},"modified":"2026-10-08T00:33:30","modified_gmt":"2026-10-07T22:33:30","slug":"a_swirling_atmospheric_sink_on_venus","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sl\/a_swirling_atmospheric_sink_on_venus\/","title":{"rendered":"Vrtin\u010dast atmosferski ponor na Veneri"},"content":{"rendered":"
\n

Predstavljajte si planet z dvema odto\u010dnima odprtinama, eno na severu in drugo na jugu. V vsaki odprtini se nahaja vrtinec atmosferskih plinov, ki se z visoko hitrostjo vrtijo, medtem ko se spu\u0161\u010dajo proti povr\u0161ini. Po podatkih vesoljske sonde \u00bbVenus Express\u00ab agencije ESA se zdi, da se prav to dogaja na sestrskem planetu Zemlje, Veneri.<\/p>\n<\/div>\n

Evropski robotski raziskovalec je v orbiti okoli drugega planeta od Sonca \u017ee od 11. aprila 2006. Nekatere izmed njegovih prvih opazovanj so pokazale temen pojav, podoben orkanu (znan kot vrtinec), nad ju\u017enim polom. Podobna obla\u010dna struktura je bila \u017ee odkrita nad severnim polom.<\/p>\n

\"The
Oko orkana<\/figcaption><\/figure>\n

Od takrat sonda Venus Express neprekinjeno opazuje ju\u017eni pol Venere, pri \u010demer se je izkazalo, da je sredi\u0161\u010de \u201cvrtinca\u201d presenetljivo spremenljivo. 26. februarja 2007 je imel obliko pe\u0161\u010dene ure. 24 ur prej je bil skoraj kro\u017een. V drugih primerih se zdi ovalen (v obliki jajca). O\u010ditno je ta pojav precej spremenljiv.<\/p>\n

Kaj povzro\u010da vrtinec s premerom 2000 km? Sonda Venus Express je pokazala, da je njegovo sredi\u0161\u010de toplej\u0161e od okolice. Podobno kot oko orkana to toplej\u0161e obmo\u010dje ozna\u010duje mesto, kjer se atmosferski plini gibljejo navzdol in tako ustvarjajo ni\u017eino na vrhu oblakov.<\/p>\n

\u201cTa ogromen vrtinec je podoben tistemu, ki ga lahko opazite v kopalni kadi, ko izvle\u010dete zama\u0161ek,\u201d pravi Giuseppe Piccioni, znanstvenik pri projektu Venus Express.<\/p>\n

Znanstveniki menijo, da Sonce na ekvatorju segreva ozra\u010dje, ki vsebuje ogljikov dioksid. Plin se dvigne in nato premika proti polom. V polarnih obmo\u010djih se spu\u0161\u010da in tako tvori atmosferski \u201codtok\u201d.<\/p>","protected":false},"excerpt":{"rendered":"

Imagine a planet with two drains, one in the north and the other in the south. Each drain features a whirlpool of atmospheric gases which are swirling around at high […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"esa_banner_image":"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2008\/03\/venus_s_polar_vortex2\/18246846-2-eng-GB\/Venus_s_polar_vortex.jpg","esa_banner_description":"Venus's polar vortex","esa_banner_credit":"ESA\/VIRTIS\/INAF-IASF\/Obs. de Paris-LESIA\/Univ. of Oxford","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2008\/03\/Venus_s_polar_vortex2","esa_external_url":"","esa_external_new_window":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":true},"categories":[10,11,12],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-896","post","type-post","status-publish","format-standard","hentry","category-learn","category-our-universe","category-planets-and-moons"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/896","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/comments?post=896"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/896\/revisions"}],"predecessor-version":[{"id":4726,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/896\/revisions\/4726"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/media?parent=896"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/categories?post=896"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/tags?post=896"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/panel?post=896"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/language?post=896"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/age?post=896"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/duration?post=896"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/resource_type?post=896"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/audience?post=896"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/wf_post_folders?post=896"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}