{"id":892,"date":"2007-09-21T10:08:00","date_gmt":"2007-09-21T08:08:00","guid":{"rendered":"https:\/\/kids.esa.int\/disappearing_arctic_ice\/"},"modified":"2026-10-08T00:33:27","modified_gmt":"2026-10-07T22:33:27","slug":"disappearing_arctic_ice","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/da\/disappearing_arctic_ice\/","title":{"rendered":"Den forsvindende arktiske is"},"content":{"rendered":"<div class=\"lede\">\n<p>I mere end 500 \u00e5r har s\u00f8farere s\u00f8gt efter en isfri rute mellem de arktiske \u00f8er i det nordlige Canada. Mange opdagelsesrejsende mistede livet i fors\u00f8get p\u00e5 at finde en nordvestpassage, der forbinder Atlanterhavet og Stillehavet. Den arktiske iskappe er imidlertid begyndt at krympe hurtigt. Nye radarbilleder taget af ESA\u2019s Envisat viser, at arealet af arktisk havis nu er p\u00e5 sit laveste niveau, siden satellitm\u00e5lingerne begyndte for n\u00e6sten 30 \u00e5r siden. Resultatet er, at den tidligere ufarbare Nordvestpassage midlertidigt er blevet farbar.<\/p>\n<\/div>\n<p>Den arktiske isd\u00e6kke vokser om vinteren p\u00e5 den nordlige halvkugle og svinder hen hver sommer p\u00e5 den nordlige halvkugle. Tempoet i isens svind om sommeren er imidlertid ved at tage til. En mosaik best\u00e5ende af n\u00e6sten 200 billeder, der blev taget af Envisat i september 2007, viste, at Nordvestpassagen var fuldt farbar, mens Nord\u00f8stpassagen langs den sibiriske kyst kun var delvist blokeret.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1186\" data-credit=\"ESA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2007\/09\/A_2007_ice-free_portion_of_the_Northwest_Passage2\" data-licence=\"ESA Standard Licence\" data-licence-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Terms_and_conditions_of_use_of_images_and_videos_available_on_the_esa_website\"><img decoding=\"async\" loading=\"lazy\" style=\"max-width:100%;height:auto\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2007\/09\/a_2007_ice-free_portion_of_the_northwest_passage2\/17885582-2-eng-GB\/A_2007_ice-free_portion_of_the_Northwest_Passage.jpg\" alt=\"A 2007 ice-free portion of the Northwest Passage\"><figcaption>En isfri del af Nordvestpassagen fra 2007<\/figcaption><\/figure>\n<p>Den danske forsker Leif Toudal Pedersen sagde: \u201cVi har set det isd\u00e6kkede areal falde til blot omkring 3 millioner kvadratkilometer, hvilket er cirka 1 million kvadratkilometer mindre end i 2005 og 2006. I l\u00f8bet af de sidste 10 \u00e5r er isd\u00e6kket blevet reduceret med gennemsnitligt ca. 100.000 kvadratkilometer om \u00e5ret, s\u00e5 et fald p\u00e5 1 million kvadratkilometer p\u00e5 blot \u00e9t \u00e5r er ekstremt.\u201d<\/p>","protected":false},"excerpt":{"rendered":"<p>For more than 500 years, navigators have been seeking an ice-free route between the Arctic islands of northern Canada. Many explorers died in the quest to find a Northwest Passage [&hellip;]<\/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\/2007\/09\/2007_envisat_mosaic_of_arctic_ocean2\/17878848-2-eng-GB\/2007_Envisat_mosaic_of_Arctic_Ocean.jpg","esa_banner_description":"2007 Envisat mosaic of Arctic Ocean","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2007\/09\/2007_Envisat_mosaic_of_Arctic_Ocean2","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":[64,42,10],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-892","post","type-post","status-publish","format-standard","hentry","category-climate-change","category-earth","category-learn"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/892","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/comments?post=892"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/892\/revisions"}],"predecessor-version":[{"id":4724,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/892\/revisions\/4724"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=892"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=892"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=892"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=892"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=892"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=892"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=892"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=892"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=892"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=892"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}