{"id":778,"date":"2011-05-30T13:33:00","date_gmt":"2011-05-30T11:33:00","guid":{"rendered":"https:\/\/kids.esa.int\/ash_clouds_cause_flight_chaos\/"},"modified":"2026-10-08T00:32:09","modified_gmt":"2026-10-07T22:32:09","slug":"ash_clouds_cause_flight_chaos","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sv\/ash_clouds_cause_flight_chaos\/","title":{"rendered":"Askmoln orsakar kaos i flygtrafiken"},"content":{"rendered":"
\n

F\u00f6r andra g\u00e5ngen p\u00e5 ett \u00e5r har ett vulkanutbrott p\u00e5 Island orsakat kaos i stora delar av Europa. Problemet har orsakats av askmoln som slungats m\u00e5nga kilometer upp i luften. F\u00f6r isl\u00e4nningarna som bor n\u00e4ra vulkanerna har livet f\u00f6r\u00e4ndrats dramatiskt. Ett lager av brun aska t\u00e4cker hus, v\u00e4gar och \u00e5krar. De enorma molnen har dock ocks\u00e5 spridit sig tusentals kilometer \u00f6ver Europa, vilket har lett till att m\u00e5nga flygplan har tvingats stanna p\u00e5 marken.<\/p>\n<\/div>\n

Det f\u00f6rsta utbrottet inleddes i mars 2010, d\u00e5 vulkanen Eyjafjallaj\u00f6kull b\u00f6rjade spruta ut moln av \u00e5nga och aska. Under de f\u00f6ljande m\u00e5naderna st\u00e4lldes tusentals flygningar in n\u00e4r de sm\u00e5 partiklarna spred sig \u00f6ver Europa. N\u00e4r utbrottet upph\u00f6rde \u00e5tergick flygtrafiken till det normala. Sedan, den 21 maj 2011, b\u00f6rjade vulkanen Gr\u00edmsv\u00f6tn spruta ut aska h\u00f6gt upp i atmosf\u00e4ren. Lyckligtvis avtog detta utbrott ganska snabbt, trots att det var st\u00f6rre \u00e4n det f\u00f6reg\u00e5ende. I slutet av maj var flygtrafiken \u00e5ter normal.<\/p>\n

Ett av de st\u00f6rsta problemen f\u00f6r flygbolag och myndigheter vid s\u00e5dana utbrott \u00e4r att s\u00e4kerst\u00e4lla passagerarnas s\u00e4kerhet. N\u00e4r flygplan flyger genom ett vulkanmoln tr\u00e4nger askpartiklar in i jetmotorerna, vilket kan leda till motorhaveri. Askan kan ocks\u00e5 orsaka allvarliga skador p\u00e5 flygplanets yttre. Det \u00e4r d\u00e4rf\u00f6r avg\u00f6rande att hitta ett s\u00e4tt att sp\u00e5ra molnets r\u00f6relser och ber\u00e4kna dess tjocklek.<\/p>\n

Lyckligtvis kan satelliter i omloppsbana runt jorden, s\u00e5som ESA:s Envisat, avbilda askmolnen. De kan ocks\u00e5 uppt\u00e4cka gaser som svaveldioxid som slungats h\u00f6gt upp i atmosf\u00e4ren och som ofta n\u00e5r de h\u00f6jder d\u00e4r regulj\u00e4ra flygningar trafikerar. Uppgifterna skickas till r\u00e5dgivningscentren f\u00f6r vulkanaska, som bed\u00f6mer den eventuella risken f\u00f6r flygtrafiken och utf\u00e4rdar varningar.<\/p>","protected":false},"excerpt":{"rendered":"

For the second time in a year, a volcanic eruption on Iceland has caused chaos across much of Europe. The problem has been caused by clouds of ash that have […]<\/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\/2011\/05\/ash_plume2\/17896682-2-eng-GB\/Ash_plume.jpg","esa_banner_description":"","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2011\/05\/Ash_plume2","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":[42,10,59],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-778","post","type-post","status-publish","format-standard","hentry","category-earth","category-learn","category-natural-disasters"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/778","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/comments?post=778"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/778\/revisions"}],"predecessor-version":[{"id":1921,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/778\/revisions\/1921"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=778"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=778"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=778"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=778"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=778"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=778"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=778"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=778"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=778"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=778"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}